检索结果-南通市图书馆

Gradient Si-and Ti-doped Fe_(2)O_(3) hierarchical homojunction photoanode for efficient solar water splitting:Effect of facile microwave-assisted growth of Si-FeOOH on Ti-FeOOH nanocorals

引用

Journal of Energy Chemistry 2023年第2期77卷 27-37,I0002页

作者： Tae Sik Koh Periyasamy Anushkkaran Weon-Sik Chae Hyun Hwi Lee Sun Hee Choi Jum Suk Jang Division of Biotechnology College of Environmental and Bioresource SciencesJeonbuk National UniversityIksan 54596Republic of Korea Daegu Center Korea Basic Science InstituteDaegu 41566Republic of Korea Pohang Accelerator Laboratory Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea

The construction of a homojunction is an effective approach for addressing issues such as slow charge separation and charge-transfer kinetics in *** the present work,we designed a gradient Si-and Ti-doped Fe_(2)O_(3) homojunction photoanode to improve the photoelectrochemical(pec)performance of a Ti-doped Fe_(2)O_(3) ***-FeOOH nanocorals were synthesized using a hydrothermal process,and Si-FeOOH was grown on Ti-FeOOH nanocorals using a rapid and facile microwaveassisted(MW)*** varying the MW irradiation time,the thickness of the Si/Ti:Fe_(2)O_(3) photoanode was adjusted and an optimized 3-Si/Ti:Fe_(2)O_(3) photoelectrode was achieved with a significantly enhanced photocurrent density(1.37 mA cm^(-2) at 1.23 V ***)and a cathodic shift of the onset potential(150 mV)compared with that of bare Ti-Fe_(2)O_(3).This enhanced pec performance can be ascribed to homojunction formation and Si gradient *** Si dopant increased the donor concentration and the formation of a homojunction improved the intrinsic built-in electric field,thereby promoting charge separation and charge ***,the as-formed homojunction passivated the surfacetrapping states,consequently improving the charge transfer efficiency(60%at 1.23 VRHE)at the photoanode/electrolyte *** findings could pave the way for the microwave-assisted fabrication of diverse efficient homojunction photoanodes for pec water splitting applications.

关键词： Homojunction Microwave-assisted Hematite Gradient doping pec water splitting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Regulation of the photogenerated carrier transfer process during photoelectrochemical water splitting:A review

引用

Green Energy & Environment 2021年第4期6卷 479-495页

作者： Yaping Zhang Yuyu Bu Lin Wang Jin-Ping Ao Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices School of MicroelectronicsXidian UniversityXi'an710071China

Photoelectrochemical(pec)water splitting is considered as an ideal technology to produce *** carrier migration is one of the most important roles in the whole process of pec water *** includes bulk transfer inside of the photoelectrode and the exchange at the solid-liquid *** energy barriers during the migration process lead to the dramatic recombination of photogenerated hot carrier and the reducing of their redox ***,an applied bias voltage should be provided to overcome these energy barriers,which brings the additional loss of *** researches indicate that some methods for the regulation of photogenerated hot carrier,such as p-n junction,unique transfer nanochannel,tandem nanostructure and Z-Scheme transfer structure et al.,show great potential to achieve high-efficient pec water overall splitting without any applied bias *** to now,many reviews have summarized and analyzed the methods to enhance the pec or photocatalysis water splitting from the perspectives of materials,nanostructures and surface modification ***,few of them focus on the topic of photogenerated carrier transfer regulation,which is an important and urgent developing *** this reason,this review focuses on the regulation of photogenerated carriers generated by the photoelectrodes and summarizes different advanced methods for photogenerated carrier regulation developed in recent *** comments and outlooks are also provided at the end of this review.

关键词： pec water splitting Photogenerated carrier migration Charge transfer regulation Energy band engineering Solid-liquid interface modification

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Vertically aligned one-dimensional ZnO/V2O5 core-shell hetero-nanostructure for photoelectrochemical water splitting

引用

Journal of Energy Chemistry 2020年第10期29卷 262-274页

作者： Tian-Feng Hou Muhammad Ali Johar Ramireddy Boppella Mostafa Afifi Hassan Swati J.Patil Sang-Wan Ryu Dong-Weon Lee MEMS and Nanotechnology Laboratory School of Mechanical EngineeringChonnam National UniversityGwangju 61186Republic of Korea Center for Next-generation Sensor Research and Development Chonnam National UniversityGwangju 61186Republic of Korea Department of Physics Chonnam National UniversityGwangju 61186Republic of Korea Nanomaterials Laboratory Inorganic and Physical Chemistry DivisionCSIR-Indian Institute of Chemical TechnologyHyderabad 500007TelanganaIndia

The vertically aligned one-dimensional(1 D)core-shell structure can maximize the exposure and use of the functionally active surface while maintaining the geometric effects caused by the underlying ***,we have fabricated 1 D vertically aligned ZnO/V2O5 core-shell hetero-nanostructure nanorod arrays(NRs)for photoelectrochemical(pec)water ***/V2O5 NRs were prepared through the hydrothermal growing of ZnO NRs and then radio frequency(RF)magnetron sputtering deposition of V2O5 for 300,600 and 900 *** photocurrent density of ZnO/V2O5-based photoanodes was gradually increased with the sputtering time,reaching the maximum value of 1.21 m A/cm^2 at 1.23 V *** hydrogen electrode(RHE)for ZnO/V2O5-600,whereas for pure ZnO-based photoanode was 0.42 mA/cm^*** incident photon to electron conversion efficiency(IPCE)of ZnO/V2O5-600 evaluated to be 82.3%which was 2.3 times higher than that of ZnO(36.4%).The improved pec performance of ZnO/V2O5-600 is because the core-shell structure with a moderate thickness of the V2O5 layer has the extremely high carrier density,largest electrochemically active surface area(ECSA),largest carrier density,lowest charge recombination rate,and the longest lifetime of e-h pairs due to the formation of the staggered gap *** study provides an effective way to design and fabrication of hetero-nanostructures for highefficiency photoelectrodes.

关键词： ZnO/V2O5 core-shell hetero-nanostructure Staggered heterojunction pec water splitting

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Conformal BiVO_(4)/WO_(3) nanobowl array photoanode for efficient photoelectrochemical water splitting

引用

Chinese Journal of Catalysis 2022年第9期43卷 2321-2331页

作者： Wen Zhang Meng Tian Haimiao Jiao Hai‐Ying Jiang Junwang Tang Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education The Energy and Catalysis HubCollege of Chemistry and Materials ScienceNorthwest UniversityXi’an 710127ShaanxiChina Department of Chemical Engineering University College LondonTorrington PlaceLondon WC1E 7JEU.K.

As one of the most promising photoanode candidates for photoelectrochemical(pec)water splitting,the photocurrent density of BiVO_(4) still needs to be further improved in order to meet the practical *** this work,a highly‐matched BiVO_(4)/WO_(3) nanobowl(NB)photoanode was constructed to enhance charge separation at the interface of the *** further modification of the BiVO_(4)/WO_(3)NB surface by NiOOH/FeOOH as an oxygen evolution cocatalyst(OEC)layer,a high photocurrent density of 3.05 mA cm^(−2) at 1.23 V *** has been achieved,which is about 5‐fold higher than pristine BiVO_(4) in neutral medium under AM 1.5 G illumination.5 times higher IPCE at 450 nm is also achieved compared with the BiVO_(4) photoanode,leading to about 95%faradaic efficiency for both H_(2) and O_(2) gas *** studies attribute the significantly enhanced pec performance to the smaller BiVO_(4) particle size(pec water splitting performance.

关键词： pec water splitting WO_(3)nanobowl BiVO_(4) Charge separation NiOOH/FeOOH

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

In Situ Growth of Matchlike ZnO/Au Plasmonic Heterostructure for Enhanced Photoelectrochemical water splitting

In Situ Growth of Matchlike ZnO/Au Plasmonic Heterostructure...

引用

中部四省化学化工学会2016年学术年会

作者： Mi Wu Wei-Jian Chen Yu-Hua Shen Fang-Zhi Huang Chuan-Hao Li Shi-Kuo Li Innovation Lab for Clean Energy and Green Catalysis School of Chemistry and Chemical EngineeringAnhui University

In this paper,we report a novel matchlike zincoxide(ZnO)/gold(Au) heterostructure with plasmonic-enhanced photoelectrochemical(pec) activity for solarhydrogen *** matchlike heterostructure with Aunanoparticles coated on the tip of ZnO nanorods is in situgrown on a zinc(Zn) substrate by using a facile hydrothermaland photoreduction combined *** uniqueheterostructure exhibits plasmonic-enhanced light absorption,efficient charge separation and transportation properties withtunable Au *** photocurrent density of thematchlike Zn O/Au heterostructure reaches 9.11 mA/cm atan applied potential of 1.0 V(vs Ag/AgCl) with an Au/Zn atomic ratio of 0.039,which is much higher than that of the pristine ZnO nanorod array(0.33 mA/cm).Moreover,the solar-to-hydrogen conversion efficiency of this special heterostructure can reach 0.48%,16 times higher than that of the pristine Zn O nanorod array(0.03%).What is more,the efficiency could be furtherimproved by optimizing the Au content of the *** formation mechanism of such a unique heterostructure isproposed to explain the plasmonic-enhanced pec *** study might contribute to the rational design of the visible-light-responsive plasmonic semiconductor/metal heterostructure photoanode to harvest the solar spectrum.

关键词： photoreduction matchlike ZnO/Au heterostructure surface plasmon resonance photoanode pec water splitting

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：