Ultrathin nanosheet-anchored hexahedral prismatic Bi2MoO6 arrays: one-step constructed and crystal facet-based homojunctions boosting photocatalytic CO2 reduction and N2 fixation

2019 ◽  
Vol 9 (24) ◽  
pp. 7045-7050 ◽  
Author(s):  
Lu Wang ◽  
Wa Gao ◽  
Zongyan Zhao ◽  
Ping Li ◽  
Huichao He ◽  
...  
Keyword(s):  
N2 Fixation ◽  
Co2 Reduction ◽  
Crystal Facet ◽  
One Step ◽  
Ultrathin Nanosheet

A fascinating Bi2MoO6 homojunction (HJ) array vertically grown on an FTO substrate was built up through a convenient one-step route; the array consisted of ultrathin nanosheet (NS)-anchored hexahedral prismatic nanorods (NR).

scholarly journals Valence Regulation of Ultrathin Cerium Vanadate Nanosheets for Enhanced Photocatalytic CO2 Reduction to CO

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1115
Author(s):  
Lujia Ding ◽  
Qiutong Han ◽  
Hong Lu ◽  
Yong Yang ◽  
Gang Lu ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Catalytic Efficiency ◽  
State Regulation ◽  
Photocatalytic Reaction ◽  
Photocatalytic Efficiency ◽  
Structure Directing Agent ◽  
Valence States ◽  
Cerium Vanadate ◽  
One Step ◽  
The Relationship

Atomic valence state regulation is an advantageous approach for improving photocatalytic efficiency and product selectivity. However, it is difficult to precisely control the ratio of the different valence states on the surface and the relationship between the surface valence change and catalytic efficiency in the photocatalytic reaction process is unclear. Herein, CeVO4 ultrathin nanosheets were fabricated by one-step solvothermal method with ethanolamine (MEA) as the structure-directing agent. The ratio of the concentrations of intrinsic Ce4+ and Ce3+ ions is precisely modulated from 19.82:100 to 13.33:100 changed by the volume of MEA added without morphology modification. The photocatalytic efficiency increases as the concentrations of intrinsic Ce4+ and Ce3+ ions decrease and CV3 (prepared with 3 mL of MEA) shows the highest CO generation rate approximately 6 and 14 times larger than CV (prepared without MEA) and CV1 (prepared with 1 mL of MEA), respectively, in the photocatalytic CO2 reduction. Interestingly, about 6.8% photo-induced Ce4+ ions were generated on the surface of the catalysts during the photocatalytic CO2 reduction without any phase and morphology changes for CV3. The photocatalytic reaction mechanism is proposed considering the intrinsic and photo-induced Ce4+ ions to obtain efficient photocatalysts.

One-step coating of commercial Ni nanoparticles with a Ni, N-co-doped carbon shell towards efficient electrocatalysts for CO2 reduction

2020 ◽  
Vol 56 (54) ◽  
pp. 7495-7498
Author(s):  
Fangxin Mao ◽  
Peng Fei Liu ◽  
Pengfei Yang ◽  
Jinlou Gu ◽  
Hua Gui Yang
Keyword(s):  
Nickel Nanoparticles ◽  
Co2 Reduction ◽  
Carbon Shell ◽  
Ni Nanoparticles ◽  
One Step ◽  
Co Doped

Commercial nickel nanoparticles (Ni NPs) were directly converted to efficient electrocatalysts for CO2 reduction by urea–Ni solid powder pyrolysis, in which a Ni, N-co-doped graphite carbon shell wraps the Ni NPs in situ.

scholarly journals Crystal facet-dependent frustrated Lewis pairs on dual-metal hydroxide for photocatalytic CO2 reduction

2021 ◽  
pp. 120748
Author(s):  
Weining Zhang ◽  
Zhenhua Yang ◽  
Hailian Wang ◽  
Lei Lu ◽  
Depei Liu ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Metal Hydroxide ◽  
Frustrated Lewis Pairs ◽  
Crystal Facet ◽  
Dual Metal ◽  
Lewis Pairs

Emerging Applications of Plasmons in Driving CO2 Reduction and N2 Fixation

2018 ◽  
Vol 30 (48) ◽  
pp. 1802227 ◽  
Author(s):  
Jianhua Yang ◽  
Yanzhen Guo ◽  
Wenzheng Lu ◽  
Ruibin Jiang ◽  
Jianfang Wang
Keyword(s):  
N2 Fixation ◽  
Co2 Reduction

Deep eutectic-solvothermal synthesis of nanostructured Fe3S4 for electrochemical N2 fixation under ambient conditions

2018 ◽  
Vol 54 (92) ◽  
pp. 13010-13013 ◽  
Author(s):  
Xinhui Zhao ◽  
Xue Lan ◽  
Dongkun Yu ◽  
Hui Fu ◽  
Zhimin Liu ◽  
...  
Keyword(s):  
N2 Fixation ◽  
Solvothermal Synthesis ◽  
Catalytic Efficiency ◽  
Metal Sulfides ◽  
Ambient Conditions ◽  
Nitrogen Reduction ◽  
Reduction Reactions ◽  
One Step

One-step solvothermal synthesis of metal sulfides by combining solvothermal synthesis and sulfuration processes. These sulfides show a high catalytic efficiency for nitrogen reduction reactions.

Insights into in situ one-step synthesis of carbon-supported nano-particulate gold-based catalysts for efficient electrocatalytic CO2 reduction

2018 ◽  
Vol 6 (46) ◽  
pp. 23610-23620 ◽  
Author(s):  
Yicheng Zhang ◽  
Liang Hu ◽  
Weiqiang Han
Keyword(s):  
Co2 Reduction ◽  
Gold Compound ◽  
One Step ◽  
Supported Gold

Carbon-supported gold/gold compound catalysts prepared by directly forming nanoparticles on carbon are easily available and efficient for CO2 electroreduction.

scholarly journals Comparing Molecular Mechanisms in Solar NH3 Production and Relations with CO2 Reduction

2020 ◽  
Author(s):  
Domenico Mallamace ◽  
Georgia Papanikolaou ◽  
Siglinda Perathoner ◽  
Gabriele Centi ◽  
Paola Lanzafame
Keyword(s):  
N2 Fixation ◽  
Fossil Fuels ◽  
Molecular Mechanisms ◽  
Co2 Reduction ◽  
Enzymatic Conversion ◽  
Plasma Catalysis ◽  
Oxide Hydroxide ◽  
Metal Atoms ◽  
Simultaneous Transfer ◽  
Defective Sites

Molecular mechanisms for N2 fixation (solar NH3) and CO2 conversion to C2+ products in enzymatic conversion (Nitrogenase), electrocatalysis, metal-complexes and plasma-catalysis are analysed and compared. It is evidenced that differently from what present in thermal and plasma-catalysis, the electrocatalysis path requires not only the direct coordination and hydrogenation of undissociated N2 molecule, but to realize a series of features present in the Nitrogenase mechanism. There is the need of i) a multi-electron and -proton simultaneous transfer, not as sequential steps, ii) forming bridging metal hydride species, iii) generate intermediates stabilized by bridging multiple metal atoms, iv) have the capability of the same sites to be effective both in N2 fixation and in COx reduction to C2+ products. Only iron oxide/hydroxide stabilized at defective sites of nanocarbons was found to have these features. This comparison of the molecular mechanisms in solar NH3 production and relations with CO2 reduction is proposed to be a source of inspiration to develop the next generation electrocatalysts to address the challenging transition to a future sustainable energy and chemistry beyond fossil fuels.

Ultrathin-nanosheet-assembled Bi2MoO6 mesoporous hollow framework for realizing optimized sunlight-driven photocatalytic water oxidation

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102155-102158 ◽  
Author(s):  
Yuchen Hao ◽  
Xiaoli Dong ◽  
Xiuying Wang ◽  
Hongchao Ma ◽  
Xiufang Zhang
Keyword(s):  
Water Oxidation ◽  
Photocatalytic Performance ◽  
Solvothermal Route ◽  
One Step ◽  
Ultrathin Nanosheet ◽  
First Time ◽  
Thin Nanosheets

A Bi2MoO6 mesoporous hollow framework composed of atomically-thin nanosheets was fabricated for the first time using a one-step solvothermal route and exhibited improved photocatalytic performance for water oxidation.

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