Li-III-VI bilayers for efficient photocatalytic overall water splitting: the role of intrinsic electric field

2019 ◽  
Vol 7 (45) ◽  
pp. 26123-26130 ◽  
Author(s):  
Yingcai Fan ◽  
Xiaohan Song ◽  
Siyun Qi ◽  
Xikui Ma ◽  
Mingwen Zhao

Intrinsic polarized Li-III-VI bilayers as highly efficient photocatalysts for overall water splitting.

2018 ◽  
Vol 11 (5) ◽  
pp. 1287-1298 ◽  
Author(s):  
Prashanth W. Menezes ◽  
Chakadola Panda ◽  
Stefan Loos ◽  
Florian Bunschei-Bruns ◽  
Carsten Walter ◽  
...  

The mechanistically distinct and synergistic role of phosphite anions in hydrogen evolution and nickel cations in oxygen evolution have been uncovered for active and durable overall water splitting catalysis in nickel phosphite.


Nanoscale ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 4496-4504
Author(s):  
Qianqian Chi ◽  
Genping Zhu ◽  
Dongmei Jia ◽  
Wei Ye ◽  
Yikang Wang ◽  
...  

A p–n heterojunction of TiO2/BiOBr with a strong built-in electric field has been constructed to simultaneously obtain hydrogen and oxygen through a photocatalytic water splitting.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xixi Ji ◽  
Yanhong Lin ◽  
Jie Zeng ◽  
Zhonghua Ren ◽  
Zijia Lin ◽  
...  

AbstractDevelopment of excellent and cheap electrocatalysts for water electrolysis is of great significance for application of hydrogen energy. Here, we show a highly efficient and stable oxygen evolution reaction (OER) catalyst with multilayer-stacked hybrid structure, in which vertical graphene nanosheets (VGSs), MoS2 nanosheets, and layered FeCoNi hydroxides (FeCoNi(OH)x) are successively grown on carbon fibers (CF/VGSs/MoS2/FeCoNi(OH)x). The catalyst exhibits excellent OER performance with a low overpotential of 225 and 241 mV to attain 500 and 1000 mA cm−2 and small Tafel slope of 29.2 mV dec−1. Theoretical calculation indicates that compositing of FeCoNi(OH)x with MoS2 could generate favorable electronic structure and decrease the OER overpotential, promoting the electrocatalytic activity. An alkaline water electrolyzer is established using CF/VGSs/MoS2/FeCoNi(OH)x anode for overall water splitting, which generates a current density of 100 mA cm−2 at 1.59 V with excellent stability over 100 h. Our highly efficient catalysts have great prospect for water electrolysis.


2021 ◽  
Vol 416 ◽  
pp. 129128
Author(s):  
Dong Cao ◽  
Jiayi Wang ◽  
Huimin Zhang ◽  
Haoxiang Xu ◽  
Daojian Cheng

2021 ◽  
Vol 230 ◽  
pp. 111258
Author(s):  
Jingjing Wang ◽  
Sajid Ur Rehman ◽  
Zeeshan Tariq ◽  
Xiaoming Zhang ◽  
Jun Zheng ◽  
...  

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