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photoelectrochemical Immunosensor Array Based on Thioglycolic Acid Capped CdS Quantum Dots for Multiplexed Detection of Veterinary Drug Residues

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Chinese Journal of Chemistry 2012年第5期30卷 1168-1176页

作者：肖飞赖彦君张苧丹白静鲜跃仲金利通 Department of Chemistry East China Normal UniversityShanghai 200062China

A photoelectrochemical immunosensor based on multi-electrode array was developed for simultaneous and sen- sitive determination of veterinary drug residues. In this system, poly（dimethyldiallylammonium chloride）（PDDA）, Au nanoparticles （Au NPs） and thioglycolic acid （TGA）-capped CdS quantum dots （QDs） were layer-by-layer as- sembled onto the home-made Au electrode array. The assembling process of the （CdS/PDDA/Au NPs/PDDA）, mul- tilayer was characterized by electrochemical impedance spectroscopy. And then the antibodies for clenbuterol （CB）, ractopamine （RAC） and chloramphenicol （CAP） were covalently immobilized onto the Au electrode array by 1-ethyl-3-（3-dimethylaminopropyl） carbodiimide （EDC） coupling reaction, respectively. The concentrations of CB, RAC and CAP were measured based on the photoelectrochemical effects of CdS QDs. Under the optimal conditions the limits of detection （LOD） for CB, RAC and CAP were 25, 50 and 2.2 pg/mL （3a）, respectively, with acceptable recovery over the range of 95.40%--105.5% in pig liver samples. All results indicate that the immunosensor array system has potential application for practical, effective and high throughput analysis of veterinary drugs residues.

关键词： CdS quantum dots photoelectrochemical immunosensor array veterinary drug

photoelectrochemical synthesis of fuels

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Science China Materials 2018年第6期61卷 769-770页

作者： Jinlong Gong Yat Li School of Chemical Engineering and Technology Tianjin UniversityChina Department of Chemistry and Biochemistry University of CaliforniaSanta CruzUSA

Developing sustainable energy resources is one of the most urgent tasks for human beings since the increasing energy demand is in drastic conflict with the limited global fossil fuel *** various types of sustainable energy resources,solar energy is considered to be promising due to its inexhaustibility,high capacity,and environmental *** photosynthesis,

关键词： photoelectrochemical synthesis of fuels Advanced Materials energy resources environmental benignancy

Unraveling the role of Ti3C2 MXene underlayer for enhanced photoelectrochemical water oxidation of hematite photoanodes

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Journal of Energy Chemistry 2021年第7期30卷 147-154,I0005页

作者： Haiyan Ji Shan Shao Guotao Yuan Cheng Lu Kun Feng Yujian Xia Xiaoxin Lv Jun Zhong Hui Xu Jiujun Deng School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Institute for Energy Research Jiangsu UniversityZhenjiang 212013JiangsuChina Institute of Functional Nano and Soft Materials Laboratory(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123JiangsuChina Automotive Engineering Research Institute Jiangsu UniversityZhenjiang 212013JiangsuChina

Hematite is regarded as a promising photoanode for photoelectrochemical(PEC) water ***,the charge recombination occurred at the interface of FTO/hematite strictly limits the PEC performance of ***,we reported a Ti3C2 MXene underlayer modified hematite(Ti-Fe2O3) photoanode via a simple drop-casting followed by hydrothermal and annealing *** to the bifunctional role of Ti3C2 MXene underlayer in improving the interfacial properties of FTO/hematite and providing Ti source for the construction of Fe2 TiO5/Fe2O3 heterostructure in hematite nanostructure,the bulk and interfacial charge transfer dynamics of hematite are significantly enhanced,and consequently enhancing the PEC *** with the pristine hematite,the as-prepared Ti-Fe2O3 photoanode shows an increased photocurrent density from 0.80 mA/cm^(2) to 1.30 mA/cm^(2) at 1.23 V ***,a further promoted PEC performance including a dramatically increased photocurrent density of 2.49 mA/cm^(2) at1.23 V *** and an obviously lowered onset potential is achieved for the Ti-Fe2O3 sample after the subsequent surface F-treatment and the loading of FeNiOOH *** results suggest that the introduction of Ti3C2 MXene underlayer is a facile but effective approach to improve the PEC water splitting activity of hematite.

关键词： Hematite photoelectrochemical Water splitting Ti3C2 MXene Underlayer

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Single-crystal TiO2/SrTiO3 core–shell heterostructured nanowire arrays for enhanced photoelectrochemical performance

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Rare Metals 2019年第5期38卷 369-378页

作者： Ying Chen Shi Li Ruo-Yu Zhao Wei Li Zhao-Hui Ren Gao-Rong Han State Key Laboratory of Silicon Materials School of Materials Science and Engineering Cyrus Tang Center for Sensor Materials and Application Zhejiang University

Vertically aligned TiO2/SrTiO3 core–shell heterostructured nanowire arrays with different shell thicknesses(5–40 nm)were fabricated on fluorine-doped tin oxide substrate via a hydrothermal *** characterization demonstrated that the TiO2 nanowires were uniformly coated by the singlecrystal SrTiO3 shell,where continuous and large-area interface could be clearly *** this means,significantly enhanced photoelectrochemical water splitting properties(0.78 mA·cm^-2 at 1.23 V ***)were successfully realized in well-designed sample(with a shell thickness of 5–10 nm)compared with those of pristine TiO2(0.38 mA·cm^-2 at 1.23 V ***).The improvement of photoelectrochemical properties was attributed to the improved charge injection and charge separation,which are calculated by the results of water oxidation and sulfite oxidation *** on these results,a mechanism was proposed that SrTiO3 shell acted as an electron–hole separation layer to improve the photocurrent *** the other hand,the sample with an over-thick SrTiO3 shell(20–40 nm)exhibited slightly reduced photoelectrochemical properties(0.66 mA·cm^-2),which could be explained by the increase of the recombination rate in thethicker SrTiO3 *** work provided a facile strategy to improve and modulate the photoelectrochemical performance of heterostructured photoanodes.

关键词： TiO2/SrTiO3 heterostructured nanowire arrays photoelectrochemical water splitting Shell thickness Band alignment

Construction of novel P-Si/TiO_(2)/HfO_(2)/MoS_(2)/Pt heterophotocathode for enhanced photoelectrochemical water splitting

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Nano Research 2024年第5期17卷 4428-4436页

作者： Jiaru Li Jiayu Bai Songjie Hu Wenyu Yuan Yuyu Bu Xiaohui Guo Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Shaanxi Key Laboratory for Carbon Neutral TechnologyThe College of Chemistry and Materials ScienceNorthwest UniversityXi'an 710069China Key Lab of Wide Band-Gap Semiconductor Materials and Devices School of MicroelectronicsXidian UniversityXi’an 710071China Key Lab of Macromolecular Science of Shaanxi Province Key Laboratory of Applied Surface and Colloid ChemistryMinistry of EducationSchool of Chemistry&Chemical EngineeringShaanxi Normal UniversityXi'an 710062China

photoelectrochemical devices have been developed to enable the conversion of solar ***,their commercial potential is restricted by the limited stability of the materials *** enhance the stability of photocathode and its solar water splitting performance,a P-Si/TiO_(2)/HfO_(2)/MoS_(2)/Pt composite photocathode is developed in this *** novel TiO_(2)/HfO_(2)/MoS_(2) serial nanostructure provides excellent stability of the photocathode,and optimizes the interface energy barrier to further facilitate the transfer process of photogenerated carriers within the *** best P-Si/TiO_(2)/HfO_(2)/MoS_(2)/Pt photocathode demonstrates an initial potential of 0.5 V(***)and a photocurrent density of-29 mA/cm^(2) at 0 V(***).Through intensity modulated photocurrent spectroscopy and photoluminescence test,it is known that the enhanced water splitting performance is attributed to the optimized carrier transfer *** findings provide a feasible strategy for the stability and photon quantum efficiency enhancement of silicon-based photocathode devices.

关键词： photoelectrochemical water splitting stability surface/interface engineering HfO_(2)layer

Ni_(3)B modified BiVO_(4) photoanodes for enhanced photoelectrochemical water splitting:The key role of Ni_(3)B on reducing the water oxidation barrier

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Nano Research 2023年第10期16卷 12043-12049页

作者： Kehui Xue Haifeng Zhu Xingyu Zhao Liana Alvares Rodrigues D.Amaranatha Reddy Yaping Zhang Lianqing Yu School of Materials Science and Engineering China University of Petroleum(East China)QingDao 266580China College of Science China University of Petroleum(East China)QingDao 266580China Engineering School of Lorena University of São PauloCEP 12602-810São PauloBrazil Indian Institute of Information Technology Design and Manufacturing Kurnool 518007India

Bismuth vanadate(BiVO_(4),BVO)as a promising photoelectrode has been received great attention for photoelectrochemical(PEC)water ***,the slow oxidation kinetics on the surface of BiVO_(4)limited the PEC water splitting ***,nickel boride(Ni_(3)B,NB)nanoparticles,generally used in electrocatalytic field material,were modified on the surface of BiVO_(4)photoelectrode as an efficient cocatalyst to accelerate the oxygen evolution *** as-prepared BVO-NB-5P photoelectrode exhibits a remarkable photocurrent density of 1.47 mA·cm^(−2)at 1.23 V versus the reversible hydrogen electrode(RHE)under air mass(AM)1.5 G illumination,which is about 2.8 times higher than the bare BiVO_(4)photoelectrode,and its water splitting rate is 11.3 times higher than bare BiVO_(4).The PEC studies reveal that the spin coated Ni_(3)B crystal cocatalyst could effectively reduce the water oxidation barrier,and improve the surface charge injection efficiency to 94%,which could boost the photogenerated holes reaction to enhance the PEC performance of BiVO_(4)photoelectrode.

关键词： photoelectrochemical water splitting BiVO_(4) Ni_(3)B

TiO2 ALD decorated CuO/BiVO4 p-n heterojunction for improved photoelectrochemical water splitting

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Journal of Materials Science & Technology 2019年第8期35卷 1740-1746页

作者： Linxing Meng Wei Tian Fangli Wu Fengren Cao Liang Li School of Physical Science and Technology Center for Energy Conversion Materials & Physics (CECMP)Jiangsu Key Laboratory of Thin FilmsSoochow University

Bismuth vanadate(BiVO4)is a promising photoanode material owing to the narrow bandgap,appropriate band position,and excellent resistance against photocorrosion,however,the performance of photoelectrochemical(PEC)water splitting is largely limited by the poor carrier separation and transport *** address these issues,for the first time,we fabricate BiVO4 film/CuO nanocone p-n junctions as photoanodes by combing a facile spin-coating process and water bath *** structure strengthens the light harvesting and promotes the charge separation and transport *** surface defects states are passivated by coating conformally ultrathin TiO2 onto CuO surface through atomic layer deposition(ALD)*** from the favorable morphology,energy band,and surface treatment,the BiVO4/CuO/TiO2 heterojunction generates an improved photocurrent that is much higher than pure *** detailed mechanism investigations indicate that the synergetic optimization of charge separation and injection efficiency in the bulk and surface of photoelectrodes can significantly improve the performance of PEC cells.

关键词： Heterojunction BiVO4 photoelectrochemical Atomic layer deposition

Preparation of CuS/BiVO4 thin film and its efficacious photoelectrochemical performance in hydrogen generation

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Rare Metals 2019年第5期38卷 428-436页

作者： Yuan Li Yue Yang Jing-Wei Huang Lei Wang Hou-De She Jun-Bo Zhong Qi-Zhao Wang College of Chemistry and Chemical Engineering Northwest Normal UniversityLanzhou 730070China State Key Laboratory of Petroleum and Petrochemical Pollution Control and Processing Lanzhou Petrochemical Research CenterPetroChinaLanzhou 730060China Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan Sichuan University of Science and EngineeringZigong 643000China School of Environmental Science and Engineering Chang'an UniversityXi'an 710064China

To drive photoelectrochemical water splitting on porous BiVO4 photoanode,we herein prepared a carnationlike CuS powder by hydrothermal method and then loaded it onto BiVO4 ***,the CuS/BiVO4 composite not only presents a higher photocurrent response value at 1.23 V versus RHE(reversible hydrogen electrode)than pure BiVO4 electrode under visible light irradiation,but also exhibits an excellent photoelectrochemical hydrogen production activity in comparison with either the BiVO4 or the *** high ameliorated performance of CuS/BiVO4 composite may be due to the strong absorption of visible light and an effective abatement in combination of *** results demonstrate an effective potential approach to design and construct efficient photoelectrochemical(PEC)systems.

关键词： Carnation-like CuS powders CuS/BiVO4 photoanode p-n-type heterostructure photoelectrochemical hydrogen generation

Insights on advanced substrates for controllable fabrication of photoanodes toward efficient and stable photoelectrochemical water splitting

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Carbon Energy 2024年第4期6卷 164-221页

作者： Huilin Hou Gang Shao Yang Wang Wai‐Yeung Wong Weiyou Yang Institute of Micro/Nano Materials and Devices Ningbo University of TechnologyNingboChina School of Materials Science and Engineering Zhengzhou UniversityZhengzhouChina Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHong KongChina

Conversion of solar energy into H_(2) by photoelectrochemical(PEC)water splitting is recognized as an ideal way to address the growing energy crisis and environmental *** a typical PEC cell,the construction of photoanodes is crucial to guarantee the high efficiency and stability of PEC reactions,which fundamentally rely on rationally designed semiconductors(as the active materials)and substrates(as the current collectors).In this review work,we start with a brief introduction of the roles of substrates in the PEC ***,we provide a systematic overview of representative strategies for the controlled fabrication of photoanodes on rationally designed substrates,including conductive glass,metal,sapphire,silicon,silicon carbide,and flexible ***,some prospects concerning the challenges and research directions in this area are proposed.

关键词： hydrogen photoanode photoelectrochemical substrates water splitting