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Enhancing MXene-based supercapacitors:Role of synthesis and 3D architectures

Journal of Energy Chemistry 2024年第4期91卷 1-26页

作者： Wen Siong Poh Wen Jie Yiang Wee-Jun Ong pau.loke show Chuan Yi Foo School of Energy and Chemical Engineering Xiamen University MalaysiaSelangor Darul EhsanMalaysia&College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina Kelip-kelip!Center of Excellence for Light Enabling Technologies Xiamen University MalaysiaSelangor Darul Ehsan 43900Malaysia Center of Excellence for NaNo Energy&Catalysis Technology(CONNECT) Xiamen University MalaysiaSelangor Darul Ehsan 43900Malaysia Department of Chemical Engineering Khalifa UniversityShakhbout Bin Sultan St-Zone 1Abu DhabiUnited Arab Emirates Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection Wenzhou UniversityWenzhou 325035ZhejiangChina Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham MalaysiaJalan Broga43500 SemenyihSelangor Darul EhsanMalaysia Department of Sustainable Engineering Saveetha School of EngineeringSIMATSChennai 602105India

MXene has been the limelight for studies on electrode active materials,aiming at developing supercapacitors with boosted energy density to meet the emerging influx of wearable and portable electronic *** its various desirable properties including intrinsic flexibility,high specific surface area,excellent metallic conductivity and unique abundance of surface functionalities,its full potential for electrochemical performance is hindered by the notorious restacking phenomenon of MXene *** to its two-dimensional(2D)nature and surface functional groups,inevitable Van der Waals interactions drive the agglomeration of nanosheets,ultimately reducing the exposure of electrochemically active sites to the electrolyte,as well as severely lengthening electrolyte ion transport *** a result,energy and power density deteriorate,limiting the application versatility of MXene-based *** 3D architectures using 2D nanosheets presents as a straightforward yet ingenious approach to mitigate the fatal flaws of ***,the sheer number of distinct methodologies reported,thus far,calls for a systematic review that unravels the rationale behind such 3D MXene structural ***,this review aims to serve this purpose while also scrutinizing the structure–property relationship to correlate such structural modifications to their ensuing electrochemical performance ***,the physicochemical properties of MXene play fundamental roles in determining the effective charge storage capabilities of 3D MXene-based *** largely depends on different MXene synthesis techniques and synthesis condition variations,hence,elucidated in this review as ***,the challenges and perspectives for achieving viable commercialization of MXene-based supercapacitor electrodes are highlighted.

关键词： MXene 3D architectures Synthesis design Supercapacitor Energy storage

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Algae-mediated antibiotic wastewater treatment:A critical review

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Environmental Science and Ecotechnology 2022年第1期9卷 40-52页

作者： Shengnan Li pau.loke show Huu Hao Ngo Shih-Hsin Ho State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbinHeilongjiang Province150090China Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham MalaysiaJalan BrogaSemenyih43500Selangor Darul EhsanMalaysia Centre for Technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneySydneyNWS2007Australia

The existence of continually increasing concentrations of antibiotics in the environment is a serious potential hazard due to their toxicity and ***,conventional treatment techniques,such as those utilized in wastewater treatment plants,are not efficient for the treatment of wastewater containing ***,algae-based technologies have been found to be a sustainable and promising technique for antibiotic ***,this review aims to provide a critical summary of algae-based technologies and their important role in antibiotic wastewater *** removal mechanisms including bioadsorption,bioaccumulation,and biodegradation are discussed in detail,with using algae-bacteria consortia for antibiotic treatment,integration of algae with other microorganisms(fungi and multiple algal species),hybrid algae-based treatment and constructed wetlands,and the factors affecting algal antibiotic degradation comprehensively described and *** addition,the use of algae as a precursor for the production of biochar is highlighted,along with the modification of biochar with other materials to improve its antibiotic removal capacity and hybrid algae-based treatment with advanced oxidation ***,recent novel approaches for enhancing antibiotic removal,such as the use of genetic engineering to enhance the antibiotic degradation capacity of algae and the integration of algal antibiotic removal with bioelectrochemical systems are ***,some based on the critical review,key future research perspectives are ***,this review systematically presents the current progress in algae-mediated antibiotic removal technologies,providing some novel insights for improved alleviation of antibiotic pollution in aquatic environments。

关键词： ABC Algae-bacteria consortia Algae-based technology Antibiotic wastewater treatment ARGs Antibiotic resistance genes Removal mechanisms Hybrid system

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Isolation of protein from Chlorella sorokiniana CY1 using liquid biphasic flotation assisted with sonication through sugaring-out effect

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Journal of Oceanology and Limnology 2019年第3期37卷 898-908页

作者： CHIA Shir Reen CHEW Kit Wayne show pau.loke SIVAKUMAR Manickam LING Tau Chuan TAO Yang Bioseparation Research Group Department of Chemical and Environmental EngineeringFaculty of EngineeringUniversity of Nottingham Malaysia CampusSemenyih 43500Malaysia Department of Chemical and Environmental Engineering Faculty of EngineeringUniversity of Nottingham Malaysia CampusSemenyih 43500Malaysia Institute of Biological Sciences Faculty of ScienceUniversity of MalayaKuala Lumpur 50603Malaysia College of Food Science and Technology Nanjing Agricultural UniversityNanjing 210095China

Microalgae,a sustainable source of multi beneficial components has been discovered and could be utilised in pharmaceutical,bioenergy and food *** study aims to investigate the sugaring-out effect on the recovery of protein from wet green microalga,Chlorella sorokiniana CY1 which was assisted with sonication.A comparison of monosaccharides and disaccharides as one of the phaseforming constituents shows that the monosaccharides,glucose was the most suitable sugar in forming the phases with acetonitrile to enhance the production of protein(52% of protein).The protein productivity of microalgae was found to be significantly influenced by the volume ratio of both phases,as the yield of protein increased to 77%.The interval time between the sonication as well as the sonication modes were influencing the protein productivity as *** optimum protein productivity was obtained with 10s of resting time in between *** mode of sonication was suitable to break down the cell wall of microalgae compared to continuous mode as a lower protein yield was obtained with the application of continuous *** optimum condition for protein extraction were found as followed:200g/L glucose as bottom phase with volume ratio of 1:1.25,10s of resting time for ultrasonication,5s of ultrasonication in pulse mode and 0.25g of biomass *** high yield of protein about 81% could be obtained from microalgae which demonstrates the potential of this source and expected to play an important role in the future.

关键词： sugaring-out Chlorella sorokiniana CY1 liquid biphasic flotation sonication microalgae extraction

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Ligand-free monophasic CuPd alloys endow boosted reaction kinetics toward energy-efficient hydrogen fuel production paired with hydrazine oxidation

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Journal of Materials Science & Technology 2023年第12期143卷 20-29页

作者： Yujeong Jeong Shreyanka Shankar Naik Yiseul Yu Jayaraman Theerthagiri Seung Jun Lee pau.loke show Hyun Chul Choi Myong Yong Choi Department of Chemistry(BK21 FOUR) Research Institute of Natural SciencesGyeongsang National UniversityJinju 52828Republic of Korea Core-Facility Center for Photochemistry&Nanomaterials Gyeongsang National UniversityJinju 52828Republic of Korea Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection Wenzhou UniversityWenzhou 325035China Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham MalaysiaJalan Broga43500 SemenyihSelangor Darul EhsanMalaysia Department of Chemistry Chonnam National UniversityGwangju 61186Republic of Korea

Optimizing the structure and components is a prevalent strategy for increasing electrocatalytic energy-saving H 2 fuel *** of the sustainable and efficient techniques is electrocatalytic water split-ting for H 2 generation,but it is still restricted by the kinetically sluggish *** to the lower standard oxidation potential of−0.33 V,replacing the OER with anodic hydrazine oxidation reaction(HzOR)is an effective way to extensively reduce the use of electricity in water *** alloying,the semiconductor and adsorption characteristics of Cu,interlaced by Pd 2+solution on the Pd surface by pulsed laser ablation(PLA)in methanol,are selectively altered to maximize cathodic HER and anodic HzOR *** optimal Cu1Pd3/C ratio demonstrates outstanding HER performance with a low overpotential of 0.315 V at 10 mA cm^(−2),as well as an ultralow overpotential of 0.560 V for HzOR in 0.5 M N_(2) H_(4)/1.0 M ***,the constructed HzOR-assisted electrolyzer cell with Cu1Pd3/C||Cu1Pd3/C as anode and cathode exhibits a cell voltage of 0.505 V at 10 mA cm^(−2) with exceptional en-durance over 5 *** current study advances competent CuPd alloys as multifunctional electrocatalysts for H 2 fuel production using a HzOR-assisted energy-efficient electrolyzer.

关键词： PLA CuPd alloy Sonochemical process HzOR Hydrazine evolution reaction Hydrazine splitting Water splitting

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Extraction of agar from Eucheuma cottonii and Gelidium amansii seaweeds with sonication pretreatment using autoclaving method

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Journal of Oceanology and Limnology 2019年第3期37卷 871-880页

作者： DIN Siti Sabariah CHEW Kit Wayne CHANG Yu-Kaung show pau.loke PHANG Siew Moi JUAN Joon Ching Department of Chemical and Environmental Engineering Faculty of EngineeringUniversity of Nottingham MalaysiaJalan BrogaSemenyih 43500Selangor Darul EhsanMalaysia Department of Chemical Engineering Ming Chi University of TechnologyNew TaipeiTaiwan 24301China Institute of Ocean and Earth Sciences University of MalayaKuala Lumpur 50603Malaysia Institute of Biological Sciences University of MalayaKuala Lumpur 50603Malaysia Nanotechnology & Catalysis Research Centre Institute of Postgraduate StudiesUniversity of MalayaKuala Lumpur 50603Malaysia

The effect of sonication pretreatment condition on Eucheuma cottonii and Gelidium amansii seaweed towards agar extraction wae *** parameters were changed during sonication to investigate the effects on agar yield and *** parameters include the time interval,concentration ratio,frequency,and *** highest amount of agar extracted from Eucheuma cottonii species could be obtained from the time interval of 30min,seaweed weight to solvent volume ratio of 1:20,the frequency of 35Hz,and the sonication power intensity of 30%.For Gelidium amansii species,the best agar yield also could be obtained from the time interval of 30 min,1:20 of seaweed weight to water volume ratio,the frequency of 35Hz,and power intensity of 30%.From the experiment,sonication pretreatment signifi cantly influenced the yield and properties of extracted *** sonication with autoclaved seaweed produced agar containing less sulfate content,which is an excellent chemical property for gel electrophoresis *** gelstrength of sonication with autoclaving for both seaweeds,Eucheuma and Gelidium species was the highest among those by sonication with direct heating,which proved that sonication pretreatment with autoclaving could enhance the physical properties of the agar.

关键词： Gelidium amansii Eucheuma collonii autoclaving sonication pretreatment water extraction

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Sonication and grinding pre-treatments on Gelidium amansii seaweed for the extraction and characterization of Agarose

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Frontiers of Environmental Science & Engineering 2018年第4期12卷 17-23页

作者： Kit Wayne Chew pau.loke show Yee Jiun Yap Joon Ching Juan Siew Moi Phang Tau Chuan Ling Jo-Shu Chang Department of Chemical and Environmental Engineering Faculty of Engineering University of Nottingham Malaysia Campus Jalan Broga 43500 Semenyih Selangor Darul Ehsan Malaysia Bioseparation Research Group Faculty of Engineering University of Nottingham Malaysia Campus Jalan Broga 43500 Semenyih Selangor Darul Ehsan Malaysia Department of Applied Mathematics Faculty of Engineering University of Nottingham Malaysia Campus Jalan Broga 43500 Semenyih Selangor Darul Ehsan Malaysia Nanotechnology & Catalysis Research Centre (NANOCAT) Institute of Postgraduate Studies University of Malaya 50603 Kuala Lumpur Malaysia Institute of Ocean and Earth Sciences University of Malaya 50603 Kuala Lumpur Malaysia Institute of Biological Sciences University of Malaya 50603 Kuala Lumpur Malaysia Department of Chemical Engineering National Cheng Kung University Tainan 701 Taiwan China

Various prctreatments methods including sonication and grinding were perfonned on red seaweed Gelidium amansii for the subsequent extraction ofagarose. The agarose products are usually extracted from agar powder products from seaweeds. In this study, the agarose was extracted using a direct polyethylene glycol （PEG） method without the need to first process the agar from seaweed. The agar extract was frozen then thawed and mixed directly with PEG solution to precipitate the agarose. The quality of agarose obtained was evaluated through physico-chemical properties analysis which includes spectral technique （FTIR）, melting and boiling point, gel strength and sulfate content. These properties were compared with a non-pretreated sample and it was found that the addition of pretreatment steps improved the quality of agarosc but gave a slightly lower yield. The gel strength of pretreated samples was much higher and the sulfate content was lower compared to non-pretreated samples. The best pretreatment method was sonication which gave gel strength of 742 gcm - and sulfate content of 0.63%. The extraction of agarose can be further improved with the use of different neutralizing agents. Pretreating the seaweed shows potential in improving the quality of agarosc from seaweed and can be applied for thture extraction of the agarose.

关键词： AgaroseGe lidium Pretreatment Seaweed Sonication

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Microalgae:A potential alternative to health supplementation for humans

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Food Science and Human Wellness 2019年第1期8卷 16-24页

作者： Apurav Krishna Koyande Kit Wayne Chew Krishnamoorthy Rambabu Yang Tao Dinh-Toi Chu pau.loke show Department of Chemical Engineering Faculty of EngineeringUniversity of Nottingham Malaysia43500Selangor Darul EhsanMalaysia Department of Chemical Engineering School of Civil and Chemical EngineeringVIT UniversityVellore632014Tamil NaduIndia College of Food Science and Technology Nanjing Agricultural University1 Weigang RoadNanjingJiangsu210095China Institute for Research and Development Duy Tan UniversityK7/25 QuangTrungDanangViet Nam Faculty of Biology Hanoi National University of Education136 XuanThuyCauGiayHanoiViet Nam

Microalgae has been consumed in human diet for thousands of *** is an under-exploited crop for production of dietary *** cultivation does not compete with land and resources required for traditional crops and has a superior yield compared to terrestrial *** high protein content has exhibited a huge potential to meet the dietary requirements of growing *** from being a source of protein,presence of various bio-active components in microalgae provide an added health *** review describes various microalgal sources of proteins and other bio-active *** of the heavily studied group of bio-active components are pigments due to their anticarcenogenic,antioxidative and antihypertensive *** to various plant and floral species,microalgae contain higher amounts of *** derived proteins have complete Essential Amino Acids(EAA)profiles and their protein content is higher than conventional sources such as meat,poultry and dairy ***,microalgal based functional foods have not flooded the *** lack of awareness coupled with scarce incentives for producers result in under-exploitation of microalgal *** of microalgal derived components as dietary and nutraceutical supplements is discussed comprehensively.

关键词： Health Human Microalgae Protein Supplement

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Role of biochar surface characteristics in the adsorption of aromatic compounds:Pore structure and functional groups

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Chinese Chemical Letters 2021年第10期32卷 2939-2946页

作者： Xue-Fei Tan Shi-Shu Zhu Ru-Peng Wang Yi-Di Chen pau.loke show Feng-Fa Zhang Shih-Hsin Ho College of Materials and Chemical Engineering Heilongjiang Institute of TechnologyHarbin 150050China State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China School of Environmental Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology Sun Yat-sen UniversityGuangzhou 510275China State Key Laboratory of Urban Water Resource and Environment School of Civil and Environmental EngineeringHarbinShenzhen 518055China Institute of Technology(Shenzhen) Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham Malaysia43500 SemenyihSelangorMalaysia

Biochar(BC)are widely used as highly efficient adsorbents to alleviate aromatics-based contaminants due to their ease of preparation,wide availability,and high *** surface properties of BCs usually vary greatly due to their complex chemical constituents and different preparation processes and are reflected in the values of parameters such as the specific surface area(SSA),pore volume/size,and surface functional groups(SFGs).The effects of SSA and pore volume/size on the adsorption of aromatics have been widely ***,the corresponding mechanisms of BC SFGs towards aromatics adsorption remains unclear as the compositions of the SFGs are usually complex and hard to *** address in this gap in the literature,this review introduces a new perspective on the adsorption mechanisms of *** collecting previously-reported results,the parameters log P(logarithm of the Kow),polar surface area,and the positive/negative charges were carefully calculated using Chem Draw3D,which allowed the hydrophobicity/hydrophilicity properties,electron donor-acceptor interactions,Hbonding,and electrostatic interactions between SFGs and aromatics-based contaminates to be inferred *** predictions were consistent with the reported results and showed that tailor-made BCs can be designed according to the molecular weights,chemical structures,and polarities of the target ***,this review provides new insight into predicting the physicochemical properties of BCs through revealing the relationship between SFGs and adsorbates,which may provide useful guidance for the preparing of highly-efficient,functional BCs for the adsorption of aromatics.

关键词： Biochar Surface characteristics Aromatics Adsorption Surface functional groups

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Development of environmentally friendly biological algicide and biochemical analysis of inhibitory effect of diatom Skeletonema costatum

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Chinese Chemical Letters 2022年第3期33卷 1358-1364页

作者： Jie Yang Qingzheng Zhu Jinlong Chai Feng Xu Yunfei Ding Qiang Zhu Zhaoxin Lu Kuan Shiong Khoo Xiaoying Bian Shujun Wang pau.loke show Jiangsu Key Laboratory of Marine Bioresources and Environment/Jiangsu Key Laboratory of Marine Biotechnology Jiangsu Ocean UniversityLianyungang 222005China Jiangsu Marine Resources Development Research Institute Lianyungang 222005China Co-Innovation Center of Jiangsu Marine Bio-industry Technology Jiangsu Ocean UniversityLianyungang 222005China Helmholtz Institute of Biotechnology State Key Laboratory of Microbial TechnologyShandong UniversityQingdao 266237China College of Food Science and Technology Nanjing Agricultural UniversityNanjing 210095China Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham MalaysiaJalan Broga43500 SemenyihMalaysia

Skeletonema costatum is a diatom widely distributed in red tide microalgae blooms and as one of the main algae causing harmful algal blooms,because of their rapid reproduction and production of toxic and harmful substances,often play a negative role in aquatic ecosystems,and human health and *** D is a nonribosomal cyclic antifungal lipopeptide in the iturins *** this study,Bacillomycin D was tested for its ability to inhibit the growth of *** EC_(50 24h) of Bacillomycin D on *** was 24.70μg/*** chlorophyll fluorescence parameters F_(v)/F_(m),F_(v)/F_(o),and yield of the diatoms decreased significantly with increasing concentrations of Bacillomycin *** of the mechanism showed that Bacillomycin D induced cell death by changing cell membrane permeability,promoting the release of cellular *** this study,transcriptomic analysis showed Bacillomycin D significantly inhibited the photosynthesis and metabolism of *** findings investigated the inhibitory effect of Bacillomycin D on the growth of *** and provided a theoretical foundation for the development of new environmentally friendly biological algicide.

关键词： Bacillomycin D Skeletonema costatum Transcriptome Growth inhibition Photosynthesis

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Integrated microalgae culture with food processing waste for wastewater remediation and enhanced biomass productivity

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Chinese Chemical Letters 2023年第2期34卷 636-643页

作者： Angela paul Peter Kit Wayne Chew Apurav Krishna Koyande Heli Siti Halimatul Munawaroh Amit Bhatnagar Yang Tao Chihe Sun Fubao Sun Zengling Ma pau.loke show Department of Chemical and Environmental Engineering Faculty of Science and EngineeringUniversity of Nottingham MalaysiaJalan Broga43500 SemenyihSelangor Darul EhsanMalaysia Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection Wenzhou UniversityWenzhou 325035China Study Program of Chemistry Department of Chemistry EducationFaculty of Mathematics and Science EducationUniversitas Pendidikan IndonesiaBandung 40154Indonesia Department of Separation Science LUT School of Engineering ScienceLUT UniversitySammonkatu 12FI 50130MikkeliFinland College of Food Science and Technology Nanjing Agricultural UniversityNanjing 210095China Key Laboratory of Industrial Biotechnology Ministry of EducationSchool of BiotechnologyJiangnan UniversityWuxi 214122China Department of Sustainable Engineering Saveetha School of EngineeringSIMATSChennai 602105India

Waste generation from food manufacturing facilities poses a serious hazard like environmental degradation, water pollution, and land pollution due to its high nutrient composition. Specifically, solid waste(powder) disposal requires additional energy sources in terms of scientific treatment, structured collection, and disposal packaging according to the safety regulation. Thus, this research discusses the viewpoint of integrating food processing waste as an organic carbon source with BG-11 medium for Chlorella vulgaris(FSP-E) growth. The food processing waste powders investigated in this study were obtained from milk, and biscuit manufacturing facilities. The culture medium was modified by combining both BG-11 and food processing waste powders to identify the optimal algal growth and biochemical *** to the microalgae grown in BG-11 alone(IBG), the combination of biscuit waste and IBG produced higher biomass concentration(44%), with increased lipid(11%), protein(20%), and carbohydrate(57%) contents. Chlorella vulgaris was able to uptake nutrients from the culture medium with combination of food processing waste and IBG thus enhancing its growth. The results obtained also indicate that an integrated culture system using food processing waste and synthetic sources can generate energy out of waste by improving the bio-composition of the microalgae biomass.

关键词： Medium contamination Food processing Waste powder Organic medium Waste remediation

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