Journal ArticleDOI
Rationally Designed n–n Heterojunction with Highly Efficient Solar Hydrogen Evolution
Miao Xu,Tian-Nan Ye,Fang Dai,Jindi Yang,Jingmei Shen,Qingquan He,Wenlong Chen,Na Liang,Jiantao Zai,Xuefeng Qian +9 more
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TLDR
This work designed and synthesized a novel n-n heterojunction photocatalyst, namely CdS-ZnWO4 heterojunctions, in which ZnW O4 has more negative conduction band and more positive valence band than those of CdCdS.Abstract:
In most of the reported n-n heterojunction photocatalysts, both the conduction and valence bands of one semiconductor are more negative than those of the other semiconductor. In this work, we designed and synthesized a novel n-n heterojunction photocatalyst, namely CdS-ZnWO4 heterojunctions, in which ZnWO4 has more negative conduction band and more positive valence band than those of CdS. The hydrogen evolution rate of CdS-30 mol %-ZnWO4 reaches 31.46 mmol h(-1) g(-1) under visible light, which is approximately 8 and 755 times higher than that of pure CdS and ZnWO4 under similar conditions, respectively. The location of the surface active sites is researched and a plausible mechanism of performance enhancement by the tuning of the structure is proposed based on the photoelectrochemical characterization. The results illustrate that this kind of nonconventional n-n heterojunctions is also suitable and highly efficient for solar hydrogen evolution.read more
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Utilizing the Space-Charge Region of the FeNi-LDH/CoP p-n Junction to Promote Performance in Oxygen Evolution Electrocatalysis.
Kai He,Tsegaye Tadesse Tsega,Xi Liu,Jiantao Zai,Xin-Hao Li,Liu Xuejiao,Wenhao Li,Nazakat Ali,Xuefeng Qian +8 more
TL;DR: P-n junctions are constructed in 3D free-standing FeNi-LDH/CoP/carbon cloth (CC) electrode, verifying the synergistic effect in the p-n junction.
Journal ArticleDOI
Toward designing semiconductor-semiconductor heterojunctions for photocatalytic applications
Liping Zhang,Mietek Jaroniec +1 more
TL;DR: In this article, the authors classified heterojunctions into five different types, each of which is associated with its own charge transfer characteristics, based on the type of band alignment and direction of internal electric field.
Journal ArticleDOI
Nanostructured Ternary Metal Tungstate-Based Photocatalysts for Environmental Purification and Solar Water Splitting: A Review
TL;DR: Different strategies, including morphological control, surface modification, heteroatom doping, and heterojunction fabrication, which are employed to promote the photocatalytic activities of MWO4-based materials, are systematically summarized and discussed.
Journal ArticleDOI
Facile preparation of MgAl2O4/CeO2/Mn3O4 heterojunction photocatalyst and enhanced photocatalytic activity
Jinyu Li,Shifa Wang,Guangai Sun,Huajing Gao,Xianlun Yu,Shengnan Tang,Xinxin Zhao,Zao Yi,Yue Wang,Yong Wei +9 more
TL;DR: In this paper, a Mn3O4-promoted double p−n junction MgAl2O4/CeO2/Mn 3O4 heterojunction photocatalyst was constructed by one-step synthesis method and two-step synthesized method.
Journal ArticleDOI
Interface engineering: NiAl-LDH in-situ derived NiP2 quantum dots and Cu3P nanoparticles ingeniously constructed p-n heterojunction for photocatalytic hydrogen evolution
Xian Yan,Zhiliang Jin +1 more
TL;DR: In this article, a point-to-point p-n heterojunction hybrid supported on stereoscopic nanoflower structure formed by numerous nanosheets in alternation way exhibits more excellent photocatalytic hydrogen evolution performance due to rich activity sites, large specific surface area, enhanced adsorption on protons and so on.
References
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Journal ArticleDOI
Heterogeneous photocatalyst materials for water splitting
Akihiko Kudo,Yugo Miseki +1 more
TL;DR: This critical review shows the basis of photocatalytic water splitting and experimental points, and surveys heterogeneous photocatalyst materials for water splitting into H2 and O2, and H2 or O2 evolution from an aqueous solution containing a sacrificial reagent.
Journal Article
Photoelectrochemical cells : Materials for clean energy
TL;DR: In this paper, the authors look into the historical background, and present status and development prospects for photoelectrochemical cells, based on nanocrystalline materials and conducting polymer films.
Journal ArticleDOI
Semiconductor-based Photocatalytic Hydrogen Generation
TL;DR: Approaches to Modifying the Electronic Band Structure for Visible-Light Harvesting and its Applications d0 Metal Oxide Photocatalysts 6518 4.4.1.
Journal ArticleDOI
Sustainable Hydrogen Production
TL;DR: Identifying and building a sustainable energy system are perhaps two of the most critical issues that today's society must address.
Journal ArticleDOI
Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting
TL;DR: This review for the first time summarizes all the developed earth-abundant cocatalysts for photocatalytic H2- and O2-production half reactions as well as overall water splitting.