Metal-free highly efficient photocatalysts for overall water splitting: C3N5 multilayers

Nanoscale ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 306-315 ◽  
Author(s):  
Siyun Qi ◽  
Yingcai Fan ◽  
Junru Wang ◽  
Xiaohan Song ◽  
Weifeng Li ◽  
...  
Keyword(s):  
Water Splitting ◽  
First Principles ◽  
Metal Free ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
High Efficient ◽  
Redox Ability

We demonstrated from first-principles the C3N5 multilayers as high-efficient photocatalysts for overall water splitting. The redox ability of the photogenerated carriers is high enough to drive HER and OER without using sacrificial reagents.

Two-dimensional penta-SiAs2: a potential metal-free photocatalyst for overall water splitting

2020 ◽  
Vol 8 (34) ◽  
pp. 11980-11987
Author(s):  
Kai Zheng ◽  
Heping Cui ◽  
Houcai Luo ◽  
Jiabing Yu ◽  
Shaogang Wang ◽  
...  
Keyword(s):  
Water Splitting ◽  
First Principles ◽  
Photocatalytic Performance ◽  
Two Dimensional ◽  
First Principles Calculations ◽  
Metal Free ◽  
Overall Water Splitting

We thoroughly investigated the photocatalytic performance of novel 2D penta-SiAs2 as an efficient photocatalyst based on first-principles calculations.

Nitrogen-enriched polydopamine analogue-derived defect-rich porous carbon as a bifunctional metal-free electrocatalyst for highly efficient overall water splitting

2017 ◽  
Vol 5 (32) ◽  
pp. 17064-17072 ◽  
Author(s):  
Zheye Zhang ◽  
Zhengran Yi ◽  
Juan Wang ◽  
Xin Tian ◽  
Pei Xu ◽  
...  
Keyword(s):  
Water Splitting ◽  
Porous Carbon ◽  
Free Water ◽  
Metal Free ◽  
Catalytic Activities ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Carbon Based

A carbon-based, bifunctional metal-free water splitting electrocatalyst is prepared using a nitrogen-enriched polydopamine analogue to produce defect-rich porous carbon, which exhibits superb catalytic activities for both the HER and the OER.

A silicon-based hybrid photocathode modified with an N5-chelated nickel catalyst in a noble-metal-free biomimetic photoelectrochemical cell for solar-driven unbiased overall water splitting

2021 ◽  
Author(s):  
Lunlun Gong ◽  
Peili Zhang ◽  
Guoquan Liu ◽  
Yu Shan ◽  
Mei Wang
Keyword(s):  
Water Splitting ◽  
Nickel Catalyst ◽  
Noble Metal ◽  
Photoelectrochemical Cell ◽  
Metal Free ◽  
Overall Water Splitting ◽  
Redox Catalysts ◽  
Silicon Based ◽  
Modification Of The Surface

Modification of the surface of semiconductor-based photoelectrodes with molecular redox catalysts gives a way to realize atom-efficient catalysis for photoelectrochemical (PEC) H2 and O2 evolution. However, the diversity of immobilized...

scholarly journals Graphene/MoS2/FeCoNi(OH)x and Graphene/MoS2/FeCoNiPx multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xixi Ji ◽  
Yanhong Lin ◽  
Jie Zeng ◽  
Zhonghua Ren ◽  
Zijia Lin ◽  
...  
Keyword(s):  
Water Splitting ◽  
Carbon Fibers ◽  
Graphene Nanosheets ◽  
Water Electrolysis ◽  
Hybrid Structure ◽  
Hydrogen Energy ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Stable Oxygen ◽  
Excellent Stability

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.

Amine-functionalized multi-walled carbon nanotubes (EDA-MWCNTs) for electrochemical water splitting reactions

2021 ◽  
Author(s):  
Shankar S. Narwade ◽  
Shivsharan M. Mali ◽  
Bhaskar R. Sathe
Keyword(s):  
Carbon Nanotubes ◽  
Water Splitting ◽  
Metal Free ◽  
Overall Water Splitting ◽  
Amine Functionalized ◽  
Multi Walled Carbon Nanotubes ◽  
Electrochemical Water Splitting ◽  
Walled Carbon Nanotubes

A study on the in situ decoration of ethylenediamine (EDA) on acid functionalized multi-walled carbon nanotubes (O-MWCNTs) for overall water splitting reactions at all pH as an efficient and inexpensive metal-free multifunctional electrocatalyst.

Linking Melem with Conjugated Schiff-Base Bond to Boost Photocatalytic Efficiency of Carbon Nitride for Overall Water Splitting

Nanoscale ◽  
2021 ◽  
Author(s):  
Hu Liu ◽  
Mengqi Shen ◽  
Peng Zhou ◽  
Zhi Guo ◽  
Xinyang Liu ◽  
...  
Keyword(s):  
Schiff Base ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Carbon Nitride ◽  
Light Irradiation ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Efficiency ◽  
Metal Free ◽  
Overall Water Splitting

Developing an efficient single component photocatalyst for overall water splitting under visible-light irradiation is extremely challenging. Herein, we report a metal-free graphitic carbon nitride (g-CxN4)-based nanosheet photocatalyst (x = 3.2,...

Sign in / Sign up

Export Citation Format

Share Document