Rational design of a novel quaternary ZnO@ZnS/Ag@Ag2S nanojunction system for enhanced photocatalytic H2 production

2018 ◽  
Vol 5 (12) ◽  
pp. 3074-3081 ◽  
Author(s):  
Yiping Su ◽  
Zhicheng Zhao ◽  
Shun Li ◽  
Fei Liu ◽  
Zuotai Zhang
Keyword(s):  
Water Splitting ◽  
Rational Design ◽  
H2 Production ◽  
Solar Water ◽  
Solar Water Splitting

A novel ZnO@ZnS/Ag@Ag2S quaternary nanojunction photocatalyst has been designed for efficient solar water splitting.

scholarly journals Rational design of TiO2/BiSbS3 heterojunction for efficient solar water splitting

2022 ◽  
Vol 49 ◽  
pp. 101775
Author(s):  
Bhagatram Meena ◽  
Mohit Kumar ◽  
Sandeep Gupta ◽  
Lichchhavi Sinha ◽  
Palyam Subramanyam ◽  
...  
Keyword(s):  
Water Splitting ◽  
Rational Design ◽  
Solar Water ◽  
Solar Water Splitting

Rational design of the nanowall photoelectrode for efficient solar water splitting

2012 ◽  
Vol 48 (28) ◽  
pp. 3439 ◽  
Author(s):  
Min Zhou ◽  
Jian Bao ◽  
Minshan Tao ◽  
Rui Zhu ◽  
Yongquan Zeng ◽  
...  
Keyword(s):  
Water Splitting ◽  
Rational Design ◽  
Solar Water ◽  
Solar Water Splitting

scholarly journals Protagonists and spectators during photocatalytic solar water splitting with SrTaOxNy oxynitride

2021 ◽  
Author(s):  
Craig Lawley ◽  
Zahra Pourmand Tehrani ◽  
Adam Clark ◽  
Olga Safonova ◽  
Max Doebeli ◽  
...  
Keyword(s):  
Water Splitting ◽  
Rational Design ◽  
Grazing Incidence ◽  
Operating Conditions ◽  
Photoelectrochemical Cell ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Species Formation ◽  
Invaluable Tool ◽  
A Site

Abstract Oxynitrides have been shown to be promising visible light water splitting photocatalysts, but rapidly degrade under operating conditions. With a custom designed photoelectrochemical cell, we perform operando grazing incidence X-ray absorption spectroscopy measurements on the oxynitride semiconductor SrTaOxNy during photocatalytic solar water splitting. We show that the nature of the A-site (Sr) and its evolution during operation, have large impacts on the overall stability and catalytic acitivity of the material, leading to an enriched BO2 (Ta(OH)/TaO(OH)) like surface. However, this usually beneficial effect with respect to increased surface hydrophilicity has complications for the efficiency of the photocatalytic process, as the OH and O(OH) intermediates formed are in competition between O2 generation and NOx species formation in the initial stages of operation. Operando characterisation of the evolution of the electronic structure of the photocatalyst proves to be an invaluable tool for the rational design and discovery of new and better performing materials.

Rational design of electrocatalysts for simultaneously promoting bulk charge separation and surface charge transfer in solar water splitting photoelectrodes

2018 ◽  
Vol 6 (6) ◽  
pp. 2568-2576 ◽  
Author(s):  
Yingfei Hu ◽  
Yangqing Wu ◽  
Jianyong Feng ◽  
Huiting Huang ◽  
Chunchen Zhang ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Surface Charge ◽  
Water Splitting ◽  
Thermodynamic Functions ◽  
Charge Separation ◽  
Rational Design ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Bulk Charge

The composite AgOx/NiOx electrocatalyst was found to possess both kinetic and thermodynamic functions.

scholarly journals Manufacturing CuxZn1-xS Photocatalysts and Their Solar H2 Production Characteristics with Varying Cu Content

2020 ◽  
Vol 58 (12) ◽  
pp. 907-914
Author(s):  
Soojin Kahng ◽  
Jung Hyeun Kim
Keyword(s):  
Production Rate ◽  
Surface Area ◽  
Water Splitting ◽  
Light Absorption ◽  
Photoelectron Spectroscopy ◽  
H2 Production ◽  
X Ray ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Vis Spectroscopy

Solar water splitting is an attractive method for producing hydrogen from renewable natural resources, and heterostructure photocatalysts have been widely investigated for photocatalytic applications. Hetero-component photocatalysts can reduce the charge recombination process by improving electron utilization, and are considered promising candidates for solar water splitting. Amongst various heterostructure systems, combinations of copper and zinc have been advantageous for constructing efficient band potential energy systems. In this work, CuxZn1-xS composite photocatalysts were solvothermally prepared with various copper contents. The morphology of the CuxZn1-xS photocatalysts was examined using scanning electron microscopy, and the crystalline structures were established with an X-ray diffractometer. Atomic analyses of the surface components of the photocatalysts were performed using X-ray photoelectron spectroscopy. UV-Vis spectroscopy and photoluminescence spectroscopy were also used to examine the efficiency of the photocatalysts’ light responses. Brunauer Emmett Teller analyses were employed to characterize the surface area and pore volume of the photocatalysts. Among the various CuxZn1-xS compositions, the highest H2 production rate was determined to be 1122 µmol g<sup>-1</sup> h<sup>-1</sup> from the Cu0.03Zn0.97S photocatalyst. This highest H2 production rate is strongly related to the observed efficient light absorption, and its influence on charge generation. The improvement is mainly attributed to the optimized charge separation and utilization, high visible light absorption, and high surface area of the photocatalyst.

Combinatorial Fabrication and High-Throughput Characterization of Thin Film Metal Oxide Libraries for Solar water Splitting

2018 ◽  
Author(s):  
Alfred Ludwig ◽  
Mona Nowak ◽  
Swati Kumari ◽  
Helge S. Stein ◽  
Ramona Gutkowski ◽  
...  
Keyword(s):  
Thin Film ◽  
Metal Oxide ◽  
Water Splitting ◽  
High Throughput ◽  
Solar Water ◽  
Solar Water Splitting

Carrier Engineering of Zr-mediated Ta3N5 Film as Efficient Photoanode for Solar Water Splitting

2021 ◽  
Author(s):  
Xin Zou ◽  
Xueyang Han ◽  
Chengxiong Wang ◽  
Yunkun Zhao ◽  
Chun Du ◽  
...  
Keyword(s):  
Band Structure ◽  
Visible Light ◽  
Water Splitting ◽  
Light Absorption ◽  
Photoelectrochemical Water Splitting ◽  
Promising Candidate ◽  
Visible Light Absorption ◽  
Solar Water ◽  
Solar Water Splitting

Ta3N5 is regarded as a promising candidate material with adequate visible light absorption and band structure for photoelectrochemical water splitting. However, the performance of Ta3N5 is severely limited by the...

scholarly journals Kesterite Cu2ZnSnS4 thin-film solar water-splitting photovoltaics for solar seawater desalination

2021 ◽  
Vol 2 (6) ◽  
pp. 100468
Author(s):  
Lintao Li ◽  
Chenyang Wang ◽  
Kuang Feng ◽  
Dingwang Huang ◽  
Kang Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Water Splitting ◽  
Seawater Desalination ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Cu2znsns4 Thin Film
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