Single-Step Solvothermal Synthesis of Highly Uniform CdxZn1-xS Nanospheres for Improved Visible Light Photocatalytic Hydrogen Generation

2021 ◽  
Author(s):  
Joyjit Kundu ◽  
Diptangshu Datta Mal ◽  
Debabrata Pradhan
Keyword(s):  
Visible Light ◽  
Band Gap ◽  
Hydrogen Generation ◽  
Single Step ◽  
Band Gap Engineering ◽  
Visible Light Photocatalyst ◽  
Photocatalytic Hydrogen Generation ◽  
Improved Performance ◽  
Highly Uniform ◽  
Visible Light Photocatalytic

Appropriate band gap engineering of a semiconductor material allows it to be a visible light photocatalyst with improved performance. Herein, we report on controlling the band gap of CdxZn1-xS by...

Hierarchical 3D NiO–CdS heteroarchitecture for efficient visible light photocatalytic hydrogen generation

2012 ◽  
Vol 22 (24) ◽  
pp. 12090 ◽  
Author(s):  
Ziyauddin Khan ◽  
Momina Khannam ◽  
Natarajan Vinothkumar ◽  
Mahuya De ◽  
Mohammad Qureshi
Keyword(s):  
Visible Light ◽  
Hydrogen Generation ◽  
Photocatalytic Hydrogen Generation ◽  
Visible Light Photocatalytic

Enhanced visible-light photocatalytic hydrogen production activity of three-dimensional mesoporous p-CuS/n-CdS nanocrystal assemblies

2017 ◽  
Vol 4 (3) ◽  
pp. 433-441 ◽  
Author(s):  
Ioannis Vamvasakis ◽  
Adelais Trapali ◽  
Jianwei Miao ◽  
Bin Liu ◽  
Gerasimos S. Armatas
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
High Performance ◽  
Hydrogen Generation ◽  
High Surface ◽  
Three Dimensional ◽  
Surface Areas ◽  
Photocatalytic Hydrogen Generation ◽  
Production Activity ◽  
Visible Light Photocatalytic

Mesoporous assemblies of p-CuS/n-CdS nanocrystal junctions with high surface areas and uniform pores demonstrate a high performance and stability in photocatalytic hydrogen generation from water using visible light.

Visible-Light Photocatalytic Hydrogen Generation by Using Dye-Sensitized Graphene Oxide as a Photocatalyst

2012 ◽  
Vol 18 (52) ◽  
pp. 16774-16783 ◽  
Author(s):  
Marcos Latorre-Sánchez ◽  
Cristina Lavorato ◽  
Marta Puche ◽  
Vicente Fornés ◽  
Raffaele Molinari ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Visible Light ◽  
Hydrogen Generation ◽  
Dye Sensitized ◽  
Photocatalytic Hydrogen Generation ◽  
Visible Light Photocatalytic

Band gap engineering by lanthanide doping in the photocatalyst LaOF: First-principles study

2014 ◽  
Vol 28 (11) ◽  
pp. 1450069 ◽  
Author(s):  
Jin-Ping Long ◽  
Zhou Wan ◽  
Xin-Guo Yan ◽  
Wei-Qing Huang ◽  
Gui-Fang Huang ◽  
...  
Keyword(s):  
Band Gap ◽  
First Principles ◽  
Density Functional ◽  
Hydrogen Generation ◽  
Hydrogen Electrode ◽  
Promising Candidate ◽  
Functional Theory ◽  
Band Gap Engineering ◽  
Photocatalytic Hydrogen Generation ◽  
Lanthanide Doping

Recent experiment [Xie et al., Catal. Commun., 27, 21 (2012)] reported that LaOF is an active catalyst for water reduction: the catalytic activity per surface area of LaOF is about ten times higher than that of anatase TiO 2. First-principles density functional theory (DFT) calculations have been performed on Ln-doped LaOF (Ln = Ce , Pr , Nd and Pm ) to evaluate the effect of lanthanide doping on the electronic and optical properties. It is found that the lowest conduction band (CB) edge potential of LaOF is less than zero (versus normal hydrogen electrode (NHE)), confirming it has enough driving force for photocatalytic water splitting. The band gap of LaOF could be reduced significantly by lanthanide doping. Electronic structure analysis shows that the impurity states appear deep inside the band gap of LaOF, which is in favor of the separation center of photogenerated carriers due to large effective mass differences between electron and hole. Moreover, doping both Pm and Nd into LaOF is an effective approach to extend the optical absorption edge to the visible light. These findings suggest that LaOF doped with lanthanide element is a promising candidate for the photocatalytic hydrogen generation from water and pollutant decomposition.

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