Surface/interface engineering of high-efficiency noble metal-free electrocatalysts for energy-related electrochemical reactions

2021 ◽  
Vol 54 ◽  
pp. 89-104 ◽  
Author(s):  
Hui Zhao ◽  
Zhong-Yong Yuan
Keyword(s):  
Noble Metal ◽  
High Efficiency ◽  
Electrochemical Reactions ◽  
Interface Engineering ◽  
Metal Free

scholarly journals Facile Synthesis of Amorphous C3N4ZnxOy (x, y = 0.32–1.10) with High Photocatalytic Efficiency for Antibiotic Degradation

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 514
Author(s):  
Ran Zhang ◽  
Jing Xian Dong ◽  
Guo Liang Gao ◽  
Xue Lu Wang ◽  
Ye-Feng Yao
Keyword(s):  
Noble Metal ◽  
Amorphous Materials ◽  
High Efficiency ◽  
Amorphous State ◽  
Amorphous Structure ◽  
Photocatalytic Efficiency ◽  
Metal Free ◽  
Synthetic Strategy ◽  
Photocatalytic Reactions ◽  
Antibiotic Degradation

The development of novel, noble metal-free semiconductor catalysts with high efficiency is of great importance for the degradation of organic compounds. Among them, amorphous materials have been extensively studied for their unique and commercially useful properties. Here, a completely amorphous, noble metal-free photocatalyst C3N4ZnxOy (x, y = 0.32–1.10) was successfully synthesized from urea and ZnO by a simple high-temperature polymerization method. As the Zn content increased, the short-range ordered structures of the amorphous samples were still retained, as revealed by XPS, FTIR, and ssNMR. Meanwhile, the -CN3 structures were observed to be gradually destroyed, which may make the amorphous state more favorable for photocatalytic reactions. Compared with g-C3N4, the amorphous samples showed significantly reduced intensities in the photoluminescence spectra, indicating that the recombination rate of the photo-generated charge carriers was greatly reduced. It was confirmed that the optimized sample (C3N4Zn0.61O0.61) achieved a photocatalytic efficiency of 86.1% in the degradation of tetracycline hydrochloride under visible light irradiation within 1 h. This is about 2 times higher than that of both g-C3N4 and ZnO. This study emphasizes the importance of the amorphous structure in photocatalytic reactions, and this synthetic strategy may provide an effective model for designing other novel catalysts.

ZnO nanorods modified with noble metal-free Co3O4 nanoparticles as a photocatalyst for efficient ethylene degradation under light irradiation

2019 ◽  
Vol 9 (21) ◽  
pp. 6191-6198 ◽  
Author(s):  
Zihao Cui ◽  
Xiaolei Liu ◽  
Xizhuang Liang ◽  
Peng Wang ◽  
Qianqian Zhang ◽  
...  
Keyword(s):  
Noble Metal ◽  
High Efficiency ◽  
Zno Nanorods ◽  
Light Irradiation ◽  
Good Stability ◽  
Co3o4 Nanoparticles ◽  
Simple Method ◽  
Metal Free

ZnO modified with noble metal-free Co3O4 nanoparticles was prepared by a simple method and showed good stability and high efficiency for photo-oxidizing ethylene.

scholarly journals Noble-metal-free Co3S4–S/G porous hybrids as an efficient electrocatalyst for oxygen reduction reaction

2016 ◽  
Vol 7 (7) ◽  
pp. 4167-4173 ◽  
Author(s):  
Wenling Gu ◽  
Liuyong Hu ◽  
Wei Hong ◽  
Xiaofang Jia ◽  
Jing Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Noble Metal ◽  
High Efficiency ◽  
Reduction Reaction ◽  
Free Oxygen ◽  
Metal Free ◽  
Reduced Graphene ◽  
Support Matrix

A high-efficiency noble-metal-free oxygen reduction reaction (ORR) catalyst was obtained based on the pyrolysis of the inexpensive precursor cobalt dithiolene (an S4-chelate complex) on simultaneously reduced graphene oxide (GO) as a support matrix.

Interface engineering of a noble-metal-free 2D–2D MoS2/Cu-ZnIn2S4 photocatalyst for enhanced photocatalytic H2 production

2017 ◽  
Vol 5 (30) ◽  
pp. 15771-15779 ◽  
Author(s):  
Yong-Jun Yuan ◽  
Daqin Chen ◽  
Jiasong Zhong ◽  
Ling-Xia Yang ◽  
Jingjing Wang ◽  
...  
Keyword(s):  
Noble Metal ◽  
H2 Production ◽  
Interface Engineering ◽  
Metal Free ◽  
Highly Efficient

A 2D–2D MoS2/Cu-ZnIn2S4 nanocomposite is designed as a highly efficient noble-metal-free photocatalyst for solar H2 generation.

Recent advances in surface/interface engineering of noble-metal free catalysts for energy conversion reactions

2021 ◽  
Author(s):  
Rongming Cai ◽  
Min Ju ◽  
Jinxi Chen ◽  
Jiazheng Ren ◽  
Jun Yu ◽  
...  
Keyword(s):  
Surface Modification ◽  
Energy Conversion ◽  
Surface Structure ◽  
Noble Metal ◽  
Surface Defect ◽  
Interface Engineering ◽  
Defect Engineering ◽  
Metal Free ◽  
Recent Advances ◽  
Crystalline Property

Recent advances in characterization techniques and surface modification strategies of energy conversion catalysts are reviewed, with an emphasis on surface defect engineering, surface crystalline property modulation, surface structure tailoring and heterointerface construction.

Highly efficient and selective photocatalytic CO2 reduction based on water-soluble CdS QDs modified by the mixed ligands in one pot

2020 ◽  
Vol 10 (9) ◽  
pp. 2821-2829 ◽  
Author(s):  
Hong-Yan Wang ◽  
Rong Hu ◽  
You-Jia Lei ◽  
Zhi-Yu Jia ◽  
Gui-Lin Hu ◽  
...  
Keyword(s):  
Noble Metal ◽  
Water Solubility ◽  
High Selectivity ◽  
High Efficiency ◽  
Co2 Reduction ◽  
Water Soluble ◽  
One Pot ◽  
Metal Free ◽  
Mixed Ligands ◽  
Cds Qds

The noble metal-free photocatalysts with good water solubility, high efficiency and high selectivity to promote CO2 conversion.

Interface engineering of the Ni(OH)2–Ni3N nanoarray heterostructure for the alkaline hydrogen evolution reaction

2018 ◽  
Vol 6 (3) ◽  
pp. 833-836 ◽  
Author(s):  
Min Gao ◽  
Lanlan Chen ◽  
Zhenhua Zhang ◽  
Xuping Sun ◽  
Shusheng Zhang
Keyword(s):  
Hydrogen Evolution ◽  
Noble Metal ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Alkaline Media ◽  
Interface Engineering ◽  
Metal Free

It is highly attractive but challenging to design and develop noble-metal-free catalysts with outstanding electrocatalytic activity for the hydrogen evolution reaction (HER) in alkaline media.

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