scholarly journals Noble-Metal-Free NixSy-C3N5 Hybrid Nanosheet with Highly Efficient Photocatalytic Performance

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1089
Author(s):  
Lixiao Han ◽  
Cong Peng ◽  
Jinming Huang ◽  
Linhao Sun ◽  
Shengyao Wang ◽  
...  
Keyword(s):  
Noble Metal ◽  
Active Sites ◽  
Photocatalytic Performance ◽  
Low Cost ◽  
H2 Production ◽  
Apparent Quantum Yield ◽  
Metal Free ◽  
Highly Efficient ◽  
Multifunctional Catalyst ◽  
Photocatalytic Applications

The construction of highly efficient, low-cost and noble-metal-free photocatalysts depends on photocatalytic technology. Recently, N-rich C3N5 has been explored as a novel carbon nitride material with a much narrower band gap (~2.2 eV) than that of traditional C3N4 (~2.7 eV). Planting noble-metal-free active sites on C3N5 to improve its photocatalytic activity is of great significance. Herein, 2D NixSy nanosheet is facially loaded on 2D C3N5 using a hydrothermal procedure under a low temperature. Due to the quick separation of photogenerated carries between C3N5 and NixSy, this inexpensive noble-metal-free NixSy-C3N5 hybrid nanosheet is highly efficient and stable as a multifunctional catalyst in various applications, including photocatalytic H2 production from water and NO removal. Impressively, the apparent quantum yield (AQY) value for H2 production reaches 37.0% (at 420 nm) on optimal NixSy-C3N5 hybrids, which is much higher than that of Pt-C3N5 material. This work opens an avenue to the fabrication of low-cost and noble-metal-free catalysts for multifunctional photocatalytic applications.

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.

Noble-metal-free MnS/In2S3 composite as highly efficient visible light driven photocatalyst for H2 production from H2S

2017 ◽  
Vol 217 ◽  
pp. 530-539 ◽  
Author(s):  
Meng Dan ◽  
Qian Zhang ◽  
Shan Yu ◽  
Arvind Prakash ◽  
Yuanhua Lin ◽  
...  
Keyword(s):  
Visible Light ◽  
Noble Metal ◽  
H2 Production ◽  
Metal Free ◽  
Highly Efficient ◽  
Visible Light Driven

Noble metal-free ternary MoS2/Zn0.5Cd0.5S/g-C3N4 heterojunction composite for highly efficient photocatalytic H2 production

2019 ◽  
Vol 110 ◽  
pp. 214-222 ◽  
Author(s):  
Yunxiang Tang ◽  
Xuesong Li ◽  
Dafeng Zhang ◽  
Xipeng Pu ◽  
Bo Ge ◽  
...  
Keyword(s):  
Noble Metal ◽  
H2 Production ◽  
Metal Free ◽  
Highly Efficient

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.

Solution Processed Sb2S3-based Photocathode with Enhanced Photocatalytic Performance via Constructing Ultrathin TiO2 Overlayer and Noble Metal Modification

2021 ◽  
Author(s):  
Yanwen Wang ◽  
Rong Liang ◽  
Chao Qin ◽  
Lei Ren ◽  
Zhizhen Ye ◽  
...  
Keyword(s):  
Visible Light ◽  
Noble Metal ◽  
Photocatalytic Performance ◽  
Low Cost ◽  
Light Response ◽  
Solution Processed ◽  
Antimony Sulfide ◽  
Visible Light Response ◽  
Absorbing Material

Antimony sulfide (Sb2S3) is a light absorbing material with strong visible light response, which is suitable for efficient and low-cost photoelectrodes. Nano-structured films have unique advantages in constructing photoelectrodes due...

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