Visible-light driven photocatalytic hydrogen generation by water-soluble all-inorganic core–shell silicon quantum dots

2020 ◽  
Vol 8 (31) ◽  
pp. 15789-15794
Author(s):  
Hiroshi Sugimoto ◽  
Hao Zhou ◽  
Miho Takada ◽  
Junichiro Fushimi ◽  
Minoru Fujii
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Quantum Confinement ◽  
Hydrogen Generation ◽  
Water Soluble ◽  
Core Shell ◽  
Photocatalytic Hydrogen Generation ◽  
Quantum Size ◽  
Visible Light Driven ◽  
Si Quantum Dots

Photocatalytic H2 generation by B,P-codoped Si quantum dots (QDs) with diameters in the quantum confinement regime is investigated. The H2 generation rate is enhanced by the increase of reduction ability of Si QDs owing to the quantum size effect.

Novel Zn0.8Cd0.2S@g-C3N4 core–shell heterojunctions with a twin structure for enhanced visible-light-driven photocatalytic hydrogen generation

2018 ◽  
Vol 6 (35) ◽  
pp. 17086-17094 ◽  
Author(s):  
Feng-Yu Tian ◽  
Dongfang Hou ◽  
Fan Tang ◽  
Min Deng ◽  
Xiu-qing Qiao ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrogen Generation ◽  
Shell Structures ◽  
Core Shell ◽  
Twin Structure ◽  
Synergetic Effects ◽  
Photocatalytic Hydrogen Generation ◽  
Excellent Photocatalytic Activity ◽  
Visible Light Driven

The excellent photocatalytic activity of Zn0.8Cd0.2S@g-C3N4 heterojunctions is ascribed to the synergetic effects of twinned homojunctions and core–shell structures.

Hierarchically Grown Urchinlike CdS@ZnO and CdS@Al2O3Heteroarrays for Efficient Visible-Light-Driven Photocatalytic Hydrogen Generation

2011 ◽  
Vol 116 (1) ◽  
pp. 150-156 ◽  
Author(s):  
Dipankar Barpuzary ◽  
Ziyauddin Khan ◽  
Natarajan Vinothkumar ◽  
Mahuya De ◽  
Mohammad Qureshi
Keyword(s):  
Visible Light ◽  
Hydrogen Generation ◽  
Photocatalytic Hydrogen Generation ◽  
Visible Light Driven

scholarly journals Visible‐Light‐Driven Oxidative Cleavage of Alkenes Using Water‐Soluble CdSe Quantum Dots

ChemSusChem ◽  
2021 ◽  
Author(s):  
Jianing Li ◽  
Jingnan Zhao ◽  
Cunfei Ma ◽  
Zongyi Yu ◽  
Hongfei Zhu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Oxidative Cleavage ◽  
Water Soluble ◽  
Cdse Quantum Dots ◽  
Visible Light Driven

Photocatalytic hydrogen generation from water under visible light using core/shell nano-catalysts

2010 ◽  
Vol 61 (9) ◽  
pp. 2303-2308 ◽  
Author(s):  
X. Wang ◽  
K. Shih ◽  
X. Y. Li
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Production Rate ◽  
Hydrogen Generation ◽  
Nano Particles ◽  
Catalyst Loading ◽  
Core Shell ◽  
Hydrogen Production Rate ◽  
Photocatalytic Hydrogen Generation ◽  
Nano Catalysts

A microemulsion technique was employed to synthesize nano-sized photocatalysts with a core (CdS)/shell (ZnS) structure. The primary particles of the photocatalysts were around 10 nm, and the mean size of the catalyst clusters in water was about 100 nm. The band gaps of the catalysts ranged from 2.25 to 2.46 eV. The experiments of photocatalytic H2 generation showed that the catalysts (CdS)x/(ZnS)1−x with x ranging from 0.1 to 1 were able to produce hydrogen from water photolysis under visible light. The catalyst with x = 0.9 had the highest rate of hydrogen production. The catalyst loading density also influenced the photo-hydrogen production rate, and the best catalyst concentration in water was 1 g L−1. The stability of the nano-catalysts in terms of size, morphology and activity was satisfactory during an extended test period for a specific hydrogen production rate of 2.38 mmol g−1 L−1 h−1 and a quantum yield of 16.1% under visible light (165 W Xe lamp, λ > 420 nm). The results demonstrate that the (CdS)/(ZnS) core/shell nano-particles are a novel photo-catalyst for renewable hydrogen generation from water under visible light. This is attributable to the large band-gap ZnS shell that separates the electron/hole pairs generated by the CdS core and hence reduces their recombinations.

Alloyed ZnS-CuInS2Semiconductor Nanorods and Their Nanoscale Heterostructures for Visible-Light-Driven Photocatalytic Hydrogen Generation

2015 ◽  
Vol 21 (26) ◽  
pp. 9514-9519 ◽  
Author(s):  
Chen Ye ◽  
Michelle D. Regulacio ◽  
Suo Hon Lim ◽  
Shuang Li ◽  
Qing-Hua Xu ◽  
...  
Keyword(s):  
Visible Light ◽  
Hydrogen Generation ◽  
Photocatalytic Hydrogen Generation ◽  
Visible Light Driven

Fabrication of Bi2S3/ZnO heterostructures: an excellent photocatalyst for visible-light-driven hydrogen generation and photoelectrochemical properties

2018 ◽  
Vol 42 (1) ◽  
pp. 541-554 ◽  
Author(s):  
Susmita Bera ◽  
Srabanti Ghosh ◽  
Rajendra N. Basu
Keyword(s):  
Visible Light ◽  
Catalytic Effect ◽  
Hydrogen Generation ◽  
Dye Degradation ◽  
Organic Dye ◽  
Photoelectrochemical Properties ◽  
Photocatalytic Hydrogen Generation ◽  
Visible Light Driven ◽  
Organic Dye Degradation

Bi2S3/ZnO heterostructures were synthesized, showing a high catalytic effect in photocatalytic hydrogen generation and organic dye degradation under visible light.

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