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Electrochemical filtration for drinking water purification:A review on membrane materials,mechanisms and roles

Journal of Environmental Sciences 2024年第7期141卷 102-128页

作者： Yuying Qi Donghao Li Shixuan Zhang Fengxiang Li tao hua College of Environmental Science and Engineering Nankai UniversityTianjin 300350China Key Laboratory of Pollution Process and Environmental Criteria Ministry of EducationTianjin 300350China Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation Tianjin 300350China

Electrochemical filtration can not only enrich low concentrations of pollutants but also produce reactive oxygen species to interact with toxic pollutants with the assistance of a power supply,making it an effective strategy for drinking water purification.In addition,the application of electrochemical filtration facilitates the reduction of pretreatment procedures and the use of chemicals,which has outstanding potential for maximizing process simplicity and reducing operating costs,enabling the production of safe drinking water in smaller installations.In recent years,the research on electrochemical filtration has gradually increased,but there has been a lack of attention on its application in the removal of low concentrations of pollutants from low conductivity water.In this review,membrane substrates and electrocatalysts used to improve the performance of electrochemical membranes are briefly summarized.Meanwhile,the application prospects of emerging single-atom catalysts in electrochemical filtration are also presented.Thereafter,several electrochemical advanced oxidation processes coupled with membrane filtration are described,and the related working mechanisms and their advantages and shortcomings used in drinking water purification are illustrated.Finally,the roles of electrochemical filtration in drinking water purification are presented,and the main problems and future perspectives of electrochemical filtration in the removal of low concentration pollutants are discussed.

关键词： Electrochemical filtration Drinking water Conductive membrane Low concentration Electrocatalyst

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Small nucleolar RNA and its potential role in the oncogenesis and development of colorectal cancer

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World Journal of Gastroenterology 2024年第2期30卷 115-127页

作者： Yang-Zheng Lan Zheng Wu Wen-Jia Chen Ze-Xuan Fang Xin-Ning Yu hua-tao Wu Jing Liu The Breast Center Cancer Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina Department of General Surgery The First Affiliated Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina

Small nucleolar RNAs(snoRNAs)represent a class of non-coding RNAs that play pivotal roles in post-transcriptional RNA processing and modification,thereby contributing significantly to the maintenance of cellular functions related to protein synthesis.SnoRNAs have been discovered to possess the ability to influence cell fate and alter disease progression,holding immense potential in controlling human diseases.It is suggested that the dysregulation of snoRNAs in cancer exhibits differential expression across various cancer types,stages,metastasis,treatment response and/or prognosis in patients.On the other hand,colorectal cancer(CRC),a prevalent malignancy of the digestive system,is characterized by high incidence and mortality rates,ranking as the third most common cancer type.Recent research indicates that snoRNA dysregulation is associated with CRC,as snoRNA expression significantly differs between normal and cancerous conditions.Consequently,assessing snoRNA expression level and function holds promise for the prognosis and diagnosis of CRC.Nevertheless,current comprehension of the potential roles of snoRNAs in CRC remains limited.This review offers a comprehensive survey of the aberrant regulation of snoRNAs in CRC,providing valuable insights into the discovery of novel biomarkers,therapeutic targets,and potential tools for the diagnosis and treatment of CRC and furnishing critical cues for advancing research into CRC and the judicious selection of therapeutic targets.

关键词： Small nucleolar RNAs Colorectal cancer Dysregulation Biomarker

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Carbon Fibers for Bioelectrochemical:Precursors,Bioelectrochemical System,and Biosensors

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Advanced Fiber Materials 2023年第3期5卷 699-730页

作者： Donghao Li Yimeng Feng Fengxiang Li Jingchun Tang tao hua College of Environmental Science and Engineering Nankai University38 Tongyan RoadTianjin 300350China Key Laboratory of Pollution Process and Environmental Criteria Tianjin Engineering Center of Environmental Diagnosis and Contamination RemediationTianjin 300350China

Carbon fibers(CFs)demonstrate a range of excellent properties including(but not limited to)microscale diameter,high hardness,high strength,light weight,high chemical resistance,and high temperature resistance.Therefore,it is necessary to summarize the application market of CFs.CFs with good physical and chemical properties stand out among many materials.It is believed that highly fibrotic CFs will play a crucial role.This review first introduces the precursors of CFs,such as polyacrylonitrile,bitumen,and lignin.Then this review introduces CFs used in BESs,such as electrode materials and modification strategies of MFC,MEC,MDC,and other cells in a large space.Then,CFs in biosensors including enzyme sensor,DNA sensor,immune sensor and implantable sensor are summarized.Finally,we discuss briefly the challenges and research directions of CFs application in BESs,biosensors and more fields.

关键词： Carbon fiber material Bioelectrochemistry Microbial fuel cell Microbial electrolysis cell Modified Biosensors

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Effect of cermet substrate characteristics on the microstructure and properties of TiAlN coatings

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International Journal of Minerals,Metallurgy and Materials 2022年第3期29卷 547-556页

作者： Qianbing You Ji Xiong Tianen Yang tao hua Yunliang Huo Junbo Liu School of Mechanical Engineering Sichuan UniversityChengdu 610065China

The composition and structure of substrate materials have important influences on coating performance,especially in terms of bond-ing strength and coating hardness,which determine whether the coating can be used for a given application.In this study,a TiAlN coating is deposited on Ti(C,N)-based cermet(TC)substrates with 0wt%-20wt%WC by arc ion plating.The influence of cermet substrate characterist-ics on the structure and properties of the TiAlN coating is then researched.Results show that the TiAlN coating deposited on the TC substrate has a columnar grain structure.As WC increases,the strength ratio of I(111)/I(200)and adhesive strength of TiAlN gradually increases.In the ab-sence of WC in the substrate,the preferred orientation of the TiAlN coating is(200).As WC increases,the preferred orientation of the TiAlN coating becomes(111)and(200).Notable differences in adhesive strength between the coating and substrate could be attributed to the micro-structure and composition of the latter.Scratching results show that the adhesive strengths of the TiAlN coating on the 0wt%-20wt%WC cer-met substrate are 52-65 N.Among the coatings obtained that on the TC substrate with 15wt%WC presents the highest H/E and H3/E2,which indicates that this coating also features the best wear resistance.The failure mechanisms of the coated tools include coating peeling,adhesive wear,and abrasive wear.As the cutting speed increases,the degree of flank wear increases and the durability of the coating decreases accord-ingly.Increases in WC result in an initial decrease followed by a gradual increase in the flank wear of the coated cermet inserts.

关键词： cermet TiAlN coating characteristics structure properties

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Surface terminals reconstruction:The way to widen the output voltage of MXene-based aqueous symmetrical microsupercapacitors

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Nano Research 2023年第5期16卷 6780-6788页

作者： Yudong Wu Jimin Fu Ningning He Jun Liu tao hua Chengbing Qin Haibo Hu School of Physics and Materials Science Key Laboratory of Structure and Functional Regulation of Hybrid MaterialsAnhui UniversityHefei 230601China Nanotechnology Centre Institute of Textiles&ClothingThe Hong Kong Polytechnic UniversityHung HomKowloon 999077Hong KongChina Institute of Solid State Physics Hefei Institutes of Physical ScienceChinese Academy of SciencesHefei 230031China State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyCollaborative Innovation Center of Extreme OpticsShanxi UniversityTaiyuanShanxi 030006China

The low anodic oxidation potential severely suppresses the output voltage(≤0.6 V)of MXene-based symmetrical aqueous microsupercapacitors(MSA-MSCs)employing acidic electrolytes.Herein,a surface terminals reconstruction mechanism on cathode of MSA-MSCs adopting aqueous neutral electrolyte(1 M Na_(2)SO_(4))is first revealed by systematical electrochemical experiments and in/ex-situ spectral analysis,which indicates that:the-O terminals on Ti3C2Tx flakes of cathode can combine with intercalated Na+cations during charging process to reconstruct into-ONa units to(i)inhibit the splitting reaction of adjacent water molecules,decreasing cathodic hydrogen evolution potential,more significantly,(ii)lower the potential of zero voltage(P0V)between the symmetrical electrodes to avoid anode oxidation,enabling full use of the unexploited potential range of cathode.Thus,the output voltage of the MSA-MSCs tremendously expanded from 0.6 V in acidic polyacrylamide(PAM)/1 M H_(2)SO_(4)hydrogel electrolyte to 1.5 V in neutral polyacrylamide/1 M Na2SO4 hydrogel electrolyte,boosting the corresponding areal energy density from 9.9 to 34.6μW·h·cm^(-2).The demonstrated deep insight on the surface terminals reconstruction mechanism for synchronously modulating the P0V between symmetrical electrodes and hydrogen evolution potential on cathode provides critical guidance for widening the cell voltage of MSA-MSCs with safer and more inexpensive neutral electrolytes.

关键词： terminals reconstruction MXene potential of zero voltage symmetrical micro-supercapacitor aqueous electrolyte

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Highly conductive fiber with design of dual conductive Ag/CB layers for ultrasensitive and wide-range strain sensing

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SmartMat 2023年第6期4卷 98-111页

作者： Ben Niu Su Yang Yiyi Yang tao hua School of Fashion&Textiles The Hong Kong Polytechnic UniversityHong Kong SARChina

Recently the ever-increasing demand for wearable electronics has greatly triggered the development of flexible strain sensors.However,it is still challenging to simultaneously achieve high sensitivity,wide working range,and good wearability.Herein,we developed a highly stretchable fiber strain sensor based on wet-spun porous polyurethane(PU)fiber,and especially a unique conductive network of dual silver(Ag)/carbon black(CB)layers is constructed.Under strain,the rapid crack propagation on the brittle Ag layer brings a large resistance change and thus high sensitivity,while the tunneling-effect dominated CB layer bridges the separated Ag islands to maintain the integrity of conductive pathways under large strain.By means of the synergistic effect of Ag/CB layers,this composite fiber of Ag/CB@PU presents not only high conductivity of 5139.9 S/m,but also ultrahigh sensitivity with a gauge factor of 2.52×10^(6) and a wide working range of up to 200%.Besides that,it is also capable of detecting very tiny strain of 0.1%and working stably for over 8000 cycles.Using mature weaving technology,this fiber strain sensor can be seamlessly integrated into the textile to conformally track different movements of the human body.Together with the facile all-solution-based fabrication protocol,this work proposed a new strategy to prepare high-performance fiber strain sensor,promising the textile-based wearable applications.

关键词： carbon black conductive fiber strain sensor textile

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Treatment and remediation of a wastewater lagoon using microelectrolysis and modified DAT/IAT methods

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Journal of Environmental Sciences 2011年第3期23卷 388-395页

作者： Qiong Wu tao hua Qixing Zhou Tianjin Key Laboratory of Environmental Remediation and Pollution Control/Key Laboratory of Pollution Process and Environmental Criteria (Ministry of Education) College of Environmental Science and Engineering Nankai University Tianjin 300071 China Key Laboratory of Terrestrial Ecological Process Institute of Applied Ecology Chinese Academy of Sciences Shenyang 110016 China

To examine treatment and remediation of a wastewater lagoon with poor biodegradability, a typical wastewater lagoon in Tianjin, China, was treated and remedied using microelectrolysis and modified demand aeration tank （DAT）/intermittent aeration tank （IAT） methods. After pretreatment by microelectrolysis, the removal efficiency of chemical oxygen demand （COD） was up to 64.6% and the ratio of BOC/COD in the effluent increased from 0.013 to 0.609. The removal rates of CODcr and NH4＋-N were affected by sludge backflow rate, mixed liquor suspended solids （MLSS）, and hydraulic retention time （HRT） in the modified DAT/IAT reactor. The highest removal rates of CODcr and NH4＋-N were up to 78.9% and 62.6%, respectively, when the sludge backflow rate was 38.0 mL/min, the total HRT was 8.0 hr and MLSS was 4088.0 mg/L. In this case, some protozoa and metazoa were observed in activated sludge and biofilm carriers. Most of chrominance was removed by microelectrolysis treatment, while the modified DAT/IAT methods were more effective for CODcr and NH4＋-N removal.

关键词： wastewater lagoon biodegradability microelectrolysis DAT/IAT ecological remediation

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Inflammatory response in gastrointestinal cancers:Overview of six transmembrane epithelial antigens of the prostate in pathophysiology and clinical implications

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World Journal of Clinical Oncology 2024年第1期15卷 9-22页

作者： Ze-Xuan Fang Wen-Jia Chen Zheng Wu Yan-Yu Hou Yang-Zheng Lan hua-tao Wu Jing Liu The Breast Center Cancer Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina Department of General Surgery First Affiliated Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina

Chronic inflammation is known to increase the risk of gastrointestinal cancers(GICs),the common solid tumors worldwide.Precancerous lesions,such as chronic atrophic inflammation and ulcers,are related to inflammatory responses in vivo and likely to occur in hyperplasia and tumorigenesis.Unfortunately,due to the lack of effective therapeutic targets,the prognosis of patients with GICs is still unsatisfactory.Interestingly,it is found that six transmembrane epithelial antigens of the prostate(STEAPs),a group of metal reductases,are significantly associated with the progression of malignancies,playing a crucial role in systemic metabolic homeostasis and inflammatory responses.The structure and functions of STEAPs suggest that they are closely related to intracellular oxidative stress,responding to inflammatory reactions.Under the imbalance status of abnormal oxidative stress,STEAP members are involved in cell transformation and the development of GICs by inhibiting or activating inflammatory process.This review focuses on STEAPs in GICs along with exploring their potential molecular regulatory mechanisms,with an aim to provide a theoretical basis for diagnosis and treatment strategies for patients suffering from these types of cancers.

关键词： Six transmembrane epithelial antigens of the prostate Gastrointestinal cancer Inflammation

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Corrigendum to“MXene-coated silk-derived carbon cloth toward flexible electrode for supercapacitor application”[J.Energy.Chem.27(2018)161–166]

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Journal of Energy Chemistry 2022年第8期31卷 652-654页

作者： Minmin Hu tao hua Renfei Cheng Jinxing Yang Cong Cui Chao Zhang Xiaohui Wang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016LiaoningChina University of Chinese Academy of Sciences Beijing 100049China

The authors regret that the printed version of the above article contained some errors.(1)The SEM images of CSC and CSC@Ti3C2Tx electrode in Fig.1 are corrected to reflect the originality of the images.

关键词： electrode corrected MXene

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Wearable strain sensing textile based on one-dimensional stretchable and weavable yarn sensors

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Nano Research 2018年第11期11卷 5799-5811页

作者： Xiaoting Li Haibo Hu tao hua Bingang Xu Shouxiang Jiang Nanotechnology Center Institute of Textiles & Clothing The Hong Kong Polytechnic University Hung Horn Kowloon Hong Kong999077 China

Flexible, wearable, and even stretchable sensors are the key components of smart electronic textiles. However, most reported flexible and wearable sensors for wearable electronics are usually fabricated in two-dimensional (2D) planar strip configurations, which cannot be properly integrated into textile structures and thus greatly degrade intrinsic properties such as the softness, flexibility, and air permeability of textiles and the aesthetic feeling of clothing. In this work, a new one-dimensional weavable strain sensing yarn consisting of an elastic polyurethane (PU) core, a conductive Ag-nanoparticles/graphene-microsheets composite sheath, and a silicone encapsulation layer was designed and fabricated through an easily manipulated protocol. Arising from the reasonable structural design and appropriate material selection, the as-fabricated strain sensor not only exhibited excellent flexibility, stretchability, and highly repeatable electromechanical stability (a repeatability error of 1.56%) but also possessed both high sensitivity (a gauge factor of nearly 500) and a relatively wide working range (0–50% applied strain) with good linearity (a correlation coefficient of 0.98). In addition, the facile, nearly all-solution-based fabrication protocol enabled the scalable production of long conductive yarns. Thus, the proper yarn length and superb mechanical properties endowed the stretchable conductive yarn with good weavability. The excellent wearability of the stretchable conductive yarn was derived from the outermost isolating, hydrophobic, and biocompatible silicone encapsulation layer. A wearable high-sensitivity strain sensing textile, fabricated by directly weaving the as-prepared yarn-based sensor, showed great potential for application to wearable textile sensors for real-time monitoring of human motions from vigorous walking to subtle and complex pronunciations.

关键词： stretchable weavable polyurethane elastomer one-dimensional (1D) strain sensing textiles sensor

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