Reduced {001}-TiO2−x photocatalysts: noble-metal-free CO2 photoreduction for selective CH4 evolution

2017 ◽  
Vol 19 (21) ◽  
pp. 13875-13881 ◽  
Author(s):  
Wenzhang Fang ◽  
Lhoussain Khrouz ◽  
Yi Zhou ◽  
Bin Shen ◽  
Chunyang Dong ◽  
...  
Keyword(s):  
Noble Metal ◽  
Co2 Photoreduction ◽  
Metal Free

The preparation of reduced TiO2 photocatalysts with high Ti3+ concentration is a great challenge due to their instability in air.

P-Type Cobalt Phosphide Composites (CoP–Co2P) Decorated on Titanium Oxide for Enhanced Noble-Metal-Free Photocatalytic H2 Evolution Activity

Langmuir ◽  
2021 ◽  
Vol 37 (11) ◽  
pp. 3321-3330
Author(s):  
Rong Liang ◽  
Yanwen Wang ◽  
Chao Qin ◽  
Xuehua Chen ◽  
Zhizhen Ye ◽  
...  
Keyword(s):  
Titanium Oxide ◽  
Noble Metal ◽  
H2 Evolution ◽  
Metal Free ◽  
Cobalt Phosphide ◽  
P Type ◽  
Photocatalytic H2 Evolution

scholarly journals Converting copper sulfide to copper with surface sulfur for electrocatalytic alkyne semi-hydrogenation with water

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yongmeng Wu ◽  
Cuibo Liu ◽  
Changhong Wang ◽  
Yifu Yu ◽  
Yanmei Shi ◽  
...  
Keyword(s):  
Binding Energy ◽  
Noble Metal ◽  
Atomic Hydrogen ◽  
Copper Sulfide ◽  
Low Cost ◽  
Water Electrolysis ◽  
Metal Free ◽  
Copper Nanowire

AbstractElectrocatalytic alkyne semi-hydrogenation to alkenes with water as the hydrogen source using a low-cost noble-metal-free catalyst is highly desirable but challenging because of their over-hydrogenation to undesired alkanes. Here, we propose that an ideal catalyst should have the appropriate binding energy with active atomic hydrogen (H*) from water electrolysis and a weaker adsorption with an alkene, thus promoting alkyne semi-hydrogenation and avoiding over-hydrogenation. So, surface sulfur-doped and -adsorbed low-coordinated copper nanowire sponges are designedly synthesized via in situ electroreduction of copper sulfide and enable electrocatalytic alkyne semi-hydrogenation with over 99% selectivity using water as the hydrogen source, outperforming a copper counterpart without surface sulfur. Sulfur anion-hydrated cation (S2−-K+(H2O)n) networks between the surface adsorbed S2− and K+ in the KOH electrolyte boost the production of active H* from water electrolysis. And the trace doping of sulfur weakens the alkene adsorption, avoiding over-hydrogenation. Our catalyst also shows wide substrate scopes, up to 99% alkenes selectivity, good reducible groups compatibility, and easily synthesized deuterated alkenes, highlighting the promising potential of this method.

scholarly journals Double Perovskite Cobaltites Integrated in a Monolithic and Noble Metal-Free Photoelectrochemical Device for Efficient Water Splitting

2021 ◽  
Author(s):  
Junjie Zhu ◽  
Jónína B. Guđmundsdóttir ◽  
Ragnar Strandbakke ◽  
Kevin G. Both ◽  
Thomas Aarholt ◽  
...  
Keyword(s):  
Water Splitting ◽  
Noble Metal ◽  
Double Perovskite ◽  
Metal Free

Noble-metal-free dye-sensitized selective oxidation of methane to methanol with green light (550 nm)

Nano Research ◽  
2021 ◽  
Author(s):  
Xingyang Wu ◽  
Yi Zeng ◽  
Hangchen Liu ◽  
Jiaqing Zhao ◽  
Tierui Zhang ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Noble Metal ◽  
Green Light ◽  
Metal Free ◽  
Dye Sensitized ◽  
Oxidation Of Methane

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...

Noble-Metal-Free Multicomponent Nanointegration for Sustainable Energy Conversion

2021 ◽  
Author(s):  
Haijiao Lu ◽  
Julie Tournet ◽  
Kamran Dastafkan ◽  
Yun Liu ◽  
Yun Hau Ng ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Noble Metal ◽  
Sustainable Energy ◽  
Metal Free
Sign in / Sign up

Export Citation Format

Share Document