Metallic Intermediate Phase Inducing Morphological Transformation in Thermal Nitridation: Ni3FeN-Based Three-Dimensional Hierarchical Electrocatalyst for Water Splitting

2018 ◽  
Vol 10 (4) ◽  
pp. 3699-3706 ◽  
Author(s):  
Zhihe Liu ◽  
Hua Tan ◽  
Jianping Xin ◽  
Jiazhi Duan ◽  
Xiaowen Su ◽  
...  
Keyword(s):  
Water Splitting ◽  
Intermediate Phase ◽  
Three Dimensional ◽  
Morphological Transformation ◽  
Thermal Nitridation

Three dimensional rosette-rod TiO2/Bi2S3 heterojunction for enhanced photoelectrochemical water splitting

2021 ◽  
Vol 868 ◽  
pp. 159133
Author(s):  
Abrar Ahmad ◽  
Fatih Tezcan ◽  
Gurbet Yerlikaya ◽  
Zia-ur-Rehman ◽  
Halime Paksoy ◽  
...  
Keyword(s):  
Water Splitting ◽  
Three Dimensional ◽  
Photoelectrochemical Water Splitting

scholarly journals Ultrathin Co–Fe hydroxide nanosheet arrays for improved oxygen evolution during water splitting

RSC Advances ◽  
2017 ◽  
Vol 7 (37) ◽  
pp. 22818-22824 ◽  
Author(s):  
Tingting Zhou ◽  
Zhen Cao ◽  
Heng Wang ◽  
Zhen Gao ◽  
Long Li ◽  
...  
Keyword(s):  
Surface Area ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Active Sites ◽  
Three Dimensional ◽  
Fe Doping ◽  
Nanosheet Arrays ◽  
Fe Hydroxide

The Fe-doping of hierarchical Co hydroxide nanosheet arrays (CoyFe1−y(OH)x NSAs) integrated on a three-dimensional electrode is shown to contribute to both increasing the available surface area and number of active sites.

A Three-Dimensional ZnO/CdS/NiFe Layered Double Hydroxide Photoanode Coupled with a Cu2O Photocathode in a Tandem Cell for Overall Solar Water Splitting

NANO ◽  
2019 ◽  
Vol 14 (11) ◽  
pp. 1950146
Author(s):  
Jia Liu ◽  
Yinghua Zhang ◽  
Zhiming Bai ◽  
Zhian Huang ◽  
Yukun Gao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Layered Double Hydroxide ◽  
Three Dimensional ◽  
Photocurrent Density ◽  
Cds Nanoparticles ◽  
Zero Bias ◽  
Tandem Cell ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Double Hydroxide

An integrated tandem photoelectrochemical (PEC) cell, composed of a three-dimensional (3D) ZnO/CdS/NiFe layered double hydroxide (LDH) core/shell/hierarchical nanowire arrays (NWAs) photoanode and a [Formula: see text]-Cu2O photocathode, was designed for unassisted overall solar water splitting in this study. The optical and photoelectrochemical characteristics of ZnO-based photoanodes and Cu2O photocathode were investigated. The results show that ZnO/CdS/NiFe LDH nanostructures offer significantly enhanced performances with a photocurrent density reaching 5.8[Formula: see text]mA[Formula: see text][Formula: see text][Formula: see text]cm[Formula: see text] at 0.9[Formula: see text]V and an onset potential as early as 0.1[Formula: see text]V (versus RHE). The enhancement can be attributed to the existence of CdS nanoparticles (NPs) which boosts the light absorption in visible region and enhances charge separation. Moreover, the introduction of NiFe LDH nanoplates, with unique hierarchical mesoporous architecture, promotes electrochemical reactions by providing more active sites as co-catalyst. On the above basis, the ZnO/CdS/NiFe LDH–Cu2O two-electrode tandem cell system was established. At zero bias, the device shows a photocurrent density of 0.4[Formula: see text]mA[Formula: see text][Formula: see text][Formula: see text]cm[Formula: see text] along with the corresponding solar-to-hydrogen (STH) conversion efficiency reaching 0.50%. Our results indicate that the tandem PEC cells consisting of metal–oxide–semiconductor photoelectrodes based on Earth-abundant and low-cost materials hold promising application potential for overall solar water splitting.

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