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Highly efficient 1D p-Te/2D n-Bi_(2)Te_(3) heterojunction self-driven broadband photodetector

nano Research 2024年第3期17卷 1864-1874页

作者： Chenchen zhao Dongbo Wang Jiamu Cao Zhi Zeng Bingke Zhang Jingwen Pan Donghao Liu Sihang Liu Shujie Jiao Tianyuan Chen Gang Liu Xuan Fang Liancheng zhao Jinzhong Wang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China School of Astronautics Harbin Institute of TechnologyHarbin 150001China Center for High Pressure Science and Technology Advanced Research Shanghai 201203China State key Laboratory of High Power Semiconductor Lasers Changchun University of Science and TechnologyChangchun 130022China

Broadband photodetectors with self-driven functions have attracted intensive scientific interest due to their low energy consumption and high optical ***,high-performance broadband self-driven photodetectors are still a significant challenge due to the complex fabrication processes,environmental toxicity,high production costs of traditional 3D semiconductor materials and sharply raised contact resistance,severe interfacial recombination of 2D materials and 2D/3D mixed dimension ***,1D p-Te/2D n-Bi_(2)Te_(3) heterojunctions are constructed by the simple and low-cost hydrothermal method.1D p-Te/2D n-Bi_(2)Te_(3) devices are applied in photoelectrochemical(PEC)photodetectors,with their high performance attributed to the good interfacial contacts reducing interface *** device demonstrated a broad wavelength range(365–850 nm)with an Iph/Idark as high as *** R_(i),D^(*),and external quantum efficiency(EQE)values of the device were as high as 12.07 mA/W,5.87×10^(10) Jones,and 41.05%,respectively,which were significantly better than the performance of the prepared Bi_(2)Te_(3) and Te devices.A comparison of the freshly fabricated device and the device after 30 days showed that 1D p-Te/2D n-Bi_(2)Te_(3) had excellent stability with only 18.08%decay of *** is anticipated that this work will provide new emerging material for future design and preparation of a high-performance self-driven broadband photodetector.

关键词： topological insulating states interfacial recombination self-driven 1D p-Te/2D n-Bi_(2)Te_(3) photodetector

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Understanding the role of transition metal single-atom electronic structure in oxysulfur radical-mediated oxidative degradation

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Environmental Science and Ecotechnology 2024年第4期20卷 247-258页

作者： Guanshu zhao Jing Ding Jiayi Ren Qingliang zhao Chengliang Mao kun Wang Jessica Ye Xueqi Chen Xianjie Wang Mingce Long State key Laboratory of Urban Water Resources and Environment School of EnvironmentHarbin Institute of TechnologyHarbin150090China Solar Fuels Group Department of ChemistryUniversity of Toronto80 St.George StreetTorontoOntarioM5S 3H6Canada School of Physics Harbin Institute of TechnologyHarbin150001China School of Environmental Science and Engineering Key Laboratory of Thin Film and Microfabrication Technology(Ministry of Education)Shanghai Jiao Tong University800 Dongchuan RoadShanghai200240China

The ubiquity of refractory organic matter in aquatic environments necessitates innovative removal *** radical-based advanced oxidation has emerged as an attractive solution,offering high selectivity,enduring efficacy,and anti-interference *** many technologies,sulfite activation,leveraging its cost-effectiveness and lower toxicity compared to conventional persulfates,stands ***,the activation process often relies on transition metals,suffering from low atom *** we introduce a series of single-atom catalysts(SACs)employing transition metals on g-C_(3)n_(4)substrates,effectively activating sulfite for acetaminophen *** highlight the superior performance of Fe/Cn,which demonstrates a degradation rate constant significantly surpassing those of ni/Cn and Cu/*** investigation into the electronic and spin polarization characteristics of these catalysts reveals their critical role in catalytic efficiency,with oxysulfur radical-mediated reactions ***,under visible light,the catalytic activity is enhanced,attributed to an increased generation of oxysulfur radicals and a strengthened electron donation-back donation *** proximity of Fe/Cn's d-band center to the Fermi level,alongside its high spin polarization,is shown to improve sulfite adsorption and reduce the HOMO-LUMO gap,thereby accelerating photo-assisted sulfite *** work advances the understanding of SACs in environmental applications and lays the groundwork for future water treatment technologies.

关键词： Single-atom catalysts(SACs) Oxysulfur radical Sulfite activation Spin polarization Electronic structure

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Suitability of SDn and MEC to facilitate digital twin communication over LTE-A

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Digital Communications and networks 2024年第2期10卷 347-354页

作者： Hikmat Adhami Mohammad Alja’afreh Mohamed Hoda Jiaqi zhao Yong Zhou Abdulmotaleb El Saddik Mohamed bin Zayed University of Artificial Intelligence Masdar CityAbu DhabiUnited Arab Emirates School of Computer Science and Technology China University of Mining and TechnologyXuzhou221116China School of Electrical Engineering and Computer Science University of OttawaOttawaONK1N 6N5Canada

Haptic is the modality that complements traditional multimedia,i.e.,audiovisual,to evolve the next wave of innovation at which the Internet data stream can be exchanged to enable remote skills and control *** will require ultra-low latency and ultra-high reliability to evolve the mobile experience into the era of Digital Twin and Tactile *** the 5th generation of mobile networks is not yet widely deployed,Long-Term Evolution(LTE-A)latency remains much higher than the 1 ms requirement for the Tactile Internet and therefore the Digital *** work investigates an interesting solution based on the incorporation of Software-defined networking(SDn)and Multi-access Mobile Edge Computing(MEC)technologies in an LTE-A network,to deliver future multimedia applications over the Tactile Internet while overcoming the QoS *** network scenarios were designed and simulated using Riverbed modeler and the performance was evaluated using several time-related key Performance Indicators(kPIs)such as throughput,End-2-End(E2E)delay,and *** best scenario possible is clearly the one integrating MEC and SDn approaches,where the overall delay,jitter,and throughput for haptics-attained 2 ms,0.01 ms,and 1000 packets per *** results obtained give clear evidence that the integration of,both SDn and MEC,in LTE-A indicates performance improvement,and fulfills the standard requirements in terms of the above kPIs,for realizing a Digital Twin/Tactile Internet-based system.

关键词： LTE-A 5G Digital twin Tactile Internet kPIs SDn MEC nFV Haptic

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Integrating theory with the nanoreactor concept to synthesize hollow carbon sphere-encapsulated Ptni alloys for enhanced H_(2) generation

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Carbon Energy 2024年第7期6卷 150-162页

作者： Yufeng Wu Minwei Song Ziyi zhao Guang-Hui Wang Changlong Wang Didier Astruc Institute of Circular Economy Faculty of Materials and ManufacturingBeijing University of TechnologyBeijingChina key Laboratory of Biofuels Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdaoChina ISM UMR CNRS N°5255Universitéde BordeauxTalence CedexFrance

The rational design of efficient bimetallic nanoparticle(nP)catalysts is challenging due to the lack of theoretical understanding of active components and insights into the mechanisms of a specific ***,we report the rational design of nanoreactors comprising hollow carbon sphere-confined Ptni bimetallic nPs(Ptni@HCS)as highly efficient catalysts for hydrogen generation via ammonia borane hydrolysis in *** both density functional theory calculations and molecular dynamics simulations,the effects of an active Ptni combination and the critical synergistic role of a hollow carbon shell on the molecule diffusion adsorption behaviors are *** isotope effects and theoretical calculations allow the clarification of the mechanism,with oxidative addition of an O-H bond of water to the catalyst surface being the rate-determining *** remarkable catalytic activity of the Ptni@HCS nanoreactor was also utilized for successful tandem catalytic hydrogenation reactions,using in situ-generated H_(2) from ammonia borane with high *** concerted design,theoretical calculations,and experimental work presented here shed light on the rational elaboration of efficient nanocatalysts and contribute to the establishment of a circular carbon economy using green hydrogen.

关键词： ammonia borane hydrogen nanoalloy nanoreactor solid catalyst

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Copper-based nanomaterials as peroxidase candidates for intelligent colorimetric detection and antibacterial applications

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Particuology 2024年第1期84卷 126-135页

作者： Yanyan Huang Huimin Zhong Cong Jiang Jiahui Yang Jingwen Zhang Fei zhao Chaoqun Liu College of Light Industry and Food Engineering Nanjing Forestry UniversityNanjing210037China College of Pharmacy Institutes of Environment and MedicineHenan UniversityKaifeng475004China

With natural polyphenol compound tannic acid(TA)as the ingredient,copper tannate(CuTA)nanolayer material was formed by self-assembly under the conditions of heating and copper *** ion and tannic acid could coordinate to form Cu-O-C structure which was similar to the Fe-n-C structure of natural heme *** addition,the obtained CuTA nanomaterial possessed excellent peroxidase-like catalytic activity and *** on this excellent enzymatic activity,CuTA nanomaterials could be used for colorimetric detection of hydrogen peroxide with a smartphone and decomposition of organic *** on the structural characteristics and catalytic activity,the copper tannate nanozymes could also serve as potential antibacterial reagents to effectively inhibit the growth of gram-negative and positive bacteria in a low hydrogen peroxide *** work may promote the exploration of novel peroxidase mimetics and broaden the applications of nanozymes.

关键词： nanozyme Colorimetric detection Smartphone Antibacteria

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Biotoxicity dynamic change and key toxic organics identification of coal chemical wastewater along a novel full-scale treatment process

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Journal of Environmental Sciences 2024年第4期138卷 277-287页

作者： Weiwei Ma Xiaoqi Zhang Hongjun Han Xueqing Shi Qiaoping kong Tong Yu Fei zhao School of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao 266520China State key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090China

It is particularly important to comprehensively assess the biotoxicity variation of industrial wastewater along the treatment process for ensuring the water environment ***,intensive studies on the biotoxicity reduction of industrial wastewater are still *** this study,the toxic organics removal and biotoxicity reduction of coal chemical wastewater(CCW)along a novel full-scale treatment process based on the pretreatment process-anaerobic process-biological enhanced(BE)process-anoxic/oxic(A/O)process-advanced treatment process was *** process performed great removal efficiency of COD,total phenol,nH_(4)^(+)-n and total *** the biotoxicity variation along the treatment units was analyzed from the perspective of acute biotoxicity,genotixicity and oxidative *** results indicated that the effluent of pretreatment process presented relatively high acute biotoxicity to Tetrahymena *** the acute biotoxicity was significantly reduced in BE-A/O *** the genotoxicity and oxidative damage to Tetrahymena thermophila were significantly decreased after advanced *** polar organics in CCW were identified as the main biotoxicity *** were positively correlated with acute biotoxicity,while the nitrogenous heterocyclic compounds and polycyclic aromatic hydrocarbons were positively correlated with *** the biotoxicity was effectively reduced in the novel full-scale treatment process,the effluent still performed potential biotoxicity,which need to be further explored in order to reduce environmental risk.

关键词： Acute biotoxicity Genotoxicity Oxidative damage Toxic organics Coal chemical wastewater novel full-scale treatment process

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Production of the C/TiO_(2)composite with a high-performance electrochemical property from titanium-rich sludge via in-situ C coating

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Journal of Environmental Sciences 2024年第3期137卷 131-143页

作者： Hualong Wu Yanxia zhao Jiexi Wang Xiaoyan Li kaimin Shih Xuguang Li Wei Liu School of Water Conservancy and Environment University of JinanJinan 250022China State key Lab of Physical Chemistry of Solid Surface Collaborative Innovation Center of Chemistry for Energy MaterialsCollege of MaterialsXiamen UniversityXiamen 361005China School of Metallurgy and Environment Central South UniversityChangsha 410083China Department of Civil Engineering The University of Hong KongPokfulamHong KongChina Institute of Environment and Ecology Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China

Resource recycling from waste-water and sludge is an important part of the 14th Five-Year Plan in *** emerging titanium-based coagulants have drawn growing attentions due to their strong coagulation capability in water purification and value-added Ti-loaded sludge *** and recovery of the high value-added sludge into functional nanomaterials is highly significant for both sludge reduction and environmental *** present study was carried out to investigate the recycle of the coagulated Ti-loaded sludge to produce functional C/TiO_(2)composites as the anode materials for lithium-ion batteries(LIBs).It is the first time that the application of the Ti-loaded wastewater sludge derived C/TiO_(2)was evaluated for *** experimental results showed that the carbon coating through in-situ carbonization of the sludge produced the C/TiO_(2)composites with a high specific surface area,stable structural integrity,and excellent electrochemical properties that would facilitate Li+diffusion in long-term LIBs *** C/TiO_(2)composites calcinated from the polytitanium sulfate-coagulated sludge at 800℃(n_(2))exhibited the best electrochemical performance during the cycling tests(601 m Ah/g at 100 m A/g after 200 cycles).The research work demonstrates the promising prospect of the recycle and value-added utilization of the Ti-loaded sludge in the production of high-performance C/TiO_(2)composites for energy storage *** study provides a new way for the management and reuse of Ti-loaded waste-sludge.

关键词： Sludge recovery Ti-loaded sludge In-situ coating Lithium-ion battery

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A combination of straw incorporation and polymer-coated urea offsets soil ammonia and nitrous oxide emissions in winter wheat fields

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Journal of Integrative Agriculture 2024年第5期23卷 1718-1736页

作者： Xiaoyun Wang Yajie Tian Qianhui Zhang Zhengxin zhao Rui Wang Huanjie Cai key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F UniversityYangling712100China College of Water Resources and Architectural Engineering Northwest A&F UniversityYangling 712100China

The combined effects of straw incorporation(SI)and polymer-coated urea(PCU)application on soil ammonia(nH_(3))and nitrous oxide(n_(2)O)emissions from agricultural fields have not been comprehensively evaluated in northwest *** conducted a two-year field experiment to assess the effects of combining SI with either uncoated urea(U)or PCU on soil nH_(3)emissions,n_(2)O emissions,winter wheat yields,yield-scaled nH_(3)(/nH_(3)),and yield-scaled n_(2)O(/n_(2)O).Five treatments were investigated,no nitrogen(n)fertilizer(n_(0)),U application at 150 kg n ha-1 with and without SI(SI+U and S_(0)+U),and PCU application at 150 kg n ha^(-1) with and without SI(SI+PCU and S_(0)+PCU).The results showed that the nH_(3);emissions increased by 20.98-34.35%following Sl compared to straw removal,mainly due to increases in soil ammonium(nH_(4)^(+)-n)content and water-flled pore space(WFPS).SI resulted in higher n_(2)O emissions than under the So scenario by 13.31-49.23%due to increases in soil inorganic n(SIn)contents,WFPS,and soil microbial *** contrast,the PCU application reduced the SIn contents compared to the U application,reducing the nH_(3)and n_(2)O emissions by 45.99-58.07 and 18.08-53.04%,***,no significant positive effects of the SI or PCU applications on the winter wheat yield were *** lowest /nH_(3) and /n_(2)O values were observed under the S_(0)+PCU and SI+PCU *** results suggest that single PCU applications and their combination with straw are the optimal agricultural strategies for mitigating gaseous n emissions and maintaining optimal winter wheat yields in northwest China.

关键词： straw incorporation polymer-coated urea nH_(3)and n_(2)O emissions winter wheat yields

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Facile Semiconductor p-n Homojunction nanowires with Strategic p-Type Doping Engineering Combined with Surface Reconstruction for Biosensing Applications

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nano-Micro Letters 2024年第10期16卷 15-30页

作者： Liuan Li Shi Fang Wei Chen Yueyue Li Mohammad Fazel Vafadar Danhao Wang Yang kang Xin Liu Yuanmin Luo kun Liang Yiping Dang Lei zhao Songrui zhao Zongzhi Yin Haiding Sun iGan Laboratory School of MicroelectronicsUniversity of Science and Technology of ChinaHefei 230026People's Republic of China Department of Obstetrics and Gynecology The First Affiliated Hospital of Anhui Medical UniversityNo 218 Jixi RoadHefei 230022People's Republic of China Department of Electrical and Computer Engineering McGill University3480 University StreetMontrealQC H3A 0E9Canada Union Hospital Tongji Medical CollegeHuazhong University of Science and TechnologyNo 1277 Jiefang Ave.Wuhan 430022People's Republic of China

Photosensors with versatile functionalities have emerged as a cornerstone for breakthroughs in the future optoelectronic systems across a wide range of *** particular,emerging photoelectrochemical(PEC)-type devices have recently attracted extensive interest in liquid-based biosensing applications due to their natural electrolyte-assisted operating ***,a PEC-type photosensor was carefully designed and constructed by employing gallium nitride(Gan)p-n homojunction semiconductor nanowires on silicon,with the p-Gan segment strategically doped and then decorated with cobalt-nickel oxide(ConiO_(x)).Essentially,the p-n homojunction configuration with facile p-doping engineering improves carrier separation efficiency and facilitates carrier transfer to the nanowire surface,while ConiO_(x)decoration further boosts PEC reaction activity and carrier dynamics at the nanowire/electrolyte ***,the constructed photosensor achieves a high responsivity of 247.8 mA W^(-1)while simultaneously exhibiting excellent operating ***,based on the remarkable stability and high responsivity of the device,a glucose sensing system was established with a demonstration of glucose level determination in real human *** work offers a feasible and universal approach in the pursuit of high-performance bio-related sensing applications via a rational design of PEC devices in the form of nanostructured architecture with strategic doping engineering.

关键词： p-n Gan nanowires Strategic p-doping Surface decoration Photoelectrochemical sensor Glucose sensing

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Measurement and Correlation of Liquid-liquid Equilibria for 1-Hexene-n-Hexane-3-Methysulfolane

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China Petroleum Processing & Petrochemical Technology 2024年第2期26卷 81-87页

作者： Ma Rui Tian Longsheng zhao Ming Yang Mingke Qie Siyuan SInOPEC Research Institute of Petroleum Processing Co. Ltd.Beijing 100083China

Utilizing solvent extraction to separate alkanes and olefins from catalytic light gasoline is an effective method for maximizing the utility of gasoline *** study presents the determination of liquid-liquid equilibrium data for the ternary system of 1-hexene-n-hexane-3-methylsulfolane at 30℃,40℃,and 50℃under atmospheric *** obtained data facilitated the construction of a ternary phase diagram for the *** results showed that the extraction selectivity of 1-hexene/n-hexane exceeded 1.5 when using 3-methylsulfolane as the extraction ***,the thermodynamic consistency of the experimental data was examined using Hand’s equation and the Othmer-Tobias *** correlation coefficient,R^(2)≥0.9578,indicated the acceptable reliability of the phase equilibrium ***,the nRTL(non-random two liquid)model was used to correlate the liquid-liquid phase equilibrium data and derive the binary interaction ***,the results demonstrated that the root mean square deviation of the nRTL model correlation values from the experimental values did not exceed 2.5%.

关键词： liquid-liquid phase equilibrium 1-hexene n-hexane 3-methylsulfolane nRTL

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