scholarly journals In situ hydrodeoxygenation of vanillin over Ni–Co–P/HAP with formic acid as a hydrogen source

RSC Advances ◽  
2021 ◽  
Vol 11 (18) ◽  
pp. 10996-11003
Author(s):  
Mingxing Duan ◽  
Qingyan Cheng ◽  
Mingming Wang ◽  
Yanji Wang
Keyword(s):  
Catalytic Activity ◽  
Amorphous Alloy ◽  
Formic Acid ◽  
Noble Metal ◽  
Metal Free ◽  
Alloy Catalyst

A new noble metal-free Ni–Co–P/HAP amorphous alloy catalyst was developed, and it showed excellent catalytic activity for in situ hydrodeoxygenation of vanillin to 2-methoxy-4-methylphenol with formic acid as a hydrogen source.

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.

A noble-metal-free MoS2 nanosheet-coupled MAPbI3 photocatalyst for efficient and stable visible-light-driven hydrogen evolution

2020 ◽  
Vol 56 (22) ◽  
pp. 3281-3284 ◽  
Author(s):  
Fang Wang ◽  
Xiangyu Liu ◽  
Zhengguo Zhang ◽  
Shixiong Min
Keyword(s):  
Visible Light ◽  
Hydrogen Evolution ◽  
Noble Metal ◽  
Composite Photocatalyst ◽  
Metal Free ◽  
Visible Light Driven ◽  
Mos2 Nanosheet

MoS2 nanosheets (MoS2 NSs) as a cocatalyst in situ coupled with MAPbI3 lead to a superior composite photocatalyst for visible light H2 evolution from HI splitting.

Noble-metal-free NiFe nanoparticles immobilized on nano CeZrO2 solid solutions for highly efficient hydrogen production from hydrous hydrazine

2019 ◽  
Vol 3 (11) ◽  
pp. 3071-3077 ◽  
Author(s):  
Hongtao Zou ◽  
Qilu Yao ◽  
Meiling Huang ◽  
Meihua Zhu ◽  
Fei Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Production ◽  
Noble Metal ◽  
Solid Solutions ◽  
Reduction Method ◽  
Hydrogen Generation ◽  
High Catalytic Activity ◽  
Metal Free ◽  
Highly Efficient ◽  
Hydrazine Solution

Noble-metal-free NiFe nanoparticles were successfully immobilized on nano CeZrO2 solid solutions by a simple impregnation–reduction method, exhibiting a high catalytic activity and 100% H2 selectivity for hydrogen generation from hydrazine solution.

Fe, Co, N-functionalized carbon nanotubes in situ grown on 3D porous N-doped carbon foams as a noble metal-free catalyst for oxygen reduction

2015 ◽  
Vol 3 (7) ◽  
pp. 3559-3567 ◽  
Author(s):  
Ruizhong Zhang ◽  
Shuijian He ◽  
Yizhong Lu ◽  
Wei Chen
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction ◽  
Noble Metal ◽  
Carbon Foam ◽  
Functionalized Carbon Nanotubes ◽  
Metal Free ◽  
Electrocatalytic Performance ◽  
Carbon Foams

3D Fe, Co, N-functionalized carbon nanotubes grown on carbon foam were fabricated and the hybrid exhibited high ORR electrocatalytic performance.

Nano-structured hybrid molybdenum carbides/nitrides generated in situ for HER applications

2017 ◽  
Vol 5 (17) ◽  
pp. 7764-7768 ◽  
Author(s):  
Rajinder Kumar ◽  
Ritu Rai ◽  
Seema Gautam ◽  
Abir De Sarkar ◽  
Nidhi Tiwari ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Precious Metal ◽  
Molybdenum Carbide ◽  
Low Cost ◽  
Metal Free ◽  
Highly Efficient ◽  
Molybdenum Carbides ◽  
Supported Molybdenum Carbide

A highly efficient, low-cost (precious-metal-free), highly stable nanohybrid electrocatalyst containing carbon-supported molybdenum carbide and nitride nanoparticles of size ranging from 8 to 12 nm exhibit excellent HER catalytic activity.

In situ photodeposition of amorphous NixP on CdS nanorods for efficient visible-light photocatalytic H2 generation

2019 ◽  
Vol 9 (19) ◽  
pp. 5394-5400 ◽  
Author(s):  
Simeng Zhu ◽  
Jing Wang ◽  
Yishan He ◽  
Zhiyang Yu ◽  
Xuxu Wang ◽  
...  
Keyword(s):  
Visible Light ◽  
Noble Metal ◽  
Metal Free ◽  
H2 Generation ◽  
Cds Nanorods ◽  
Photocatalytic H2 Generation ◽  
Visible Light Photocatalytic

Noble metal-free amorphous NixP modified CdS with superior photocatalytic H2 evolution activity has been successfully fabricated.

scholarly journals Ternary Ni–Co–P nanoparticles as noble-metal-free catalysts to boost the hydrolytic dehydrogenation of ammonia-borane

2017 ◽  
Vol 10 (8) ◽  
pp. 1770-1776 ◽  
Author(s):  
Chun-Chao Hou ◽  
Qiang Li ◽  
Chuan-Jun Wang ◽  
Cheng-Yun Peng ◽  
Qian-Qian Chen ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Noble Metal ◽  
Electronic Structures ◽  
Marked Improvement ◽  
Ammonia Borane ◽  
Metal Free

Ternary Ni–Co–P nanoparticles with optimized electronic structures strongly interact with ammonia-borane, resulting in the marked improvement of catalytic activity.

In situ photo deposition fabrication of NiCo/g-C3N4 photocatalyst for efficient catalytic hydrogen generation

2021 ◽  
Author(s):  
Jinghua Li ◽  
Bing Luo ◽  
Xuewen Zheng ◽  
Dengwei Jing ◽  
Lijing Ma
Keyword(s):  
Visible Light ◽  
Noble Metal ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Hydrogen Generation ◽  
Light Irradiation ◽  
Metal Free ◽  
Catalytic Hydrogen

In this work, we have prepared noble metal free NiCo/g-C3N4 photocatalysts by situ photoreduction method. The Ni23Co1/g-C3N4 photocatalyst showed excellent photocatalytic performance under visible light irradiation with a high H2...

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