Construction of Z-scheme carbon nanodots/WO3 with highly enhanced photocatalytic hydrogen production

2015 ◽  
Vol 3 (16) ◽  
pp. 8256-8259 ◽  
Author(s):  
Pengju Yang ◽  
Jianghong Zhao ◽  
Jian Wang ◽  
Baoyue Cao ◽  
Li Li ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Photocatalytic Performance ◽  
Carbon Nanodots ◽  
Effective Strategy ◽  
Photocatalytic Hydrogen Production

Z-scheme is a very effective strategy to improve the photocatalytic performance of CNDs.

scholarly journals Carbon Self-Doped Carbon Nitride Nanosheets with Enhanced Visible-Light Photocatalytic Hydrogen Production

Catalysts ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 366 ◽  
Author(s):  
Hongwei Wang ◽  
Guiqing Huang ◽  
Zhiwei Chen ◽  
Weibing Li
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Transfer Rate ◽  
Carbon Nitride ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Production ◽  
Feasible Method ◽  
Carrier Transfer ◽  
Carbon Nitride Nanosheets ◽  
Visible Light Photocatalytic

In this study, we prepared carbon self-doped carbon nitride nanosheets through a glucose synergic co-condensation method. In the carbon self-doped structure, the N atoms in the triazine rings were substituted by C atoms, resulting in enhanced visible-light photocatalytic hydrogen production, which is three-times higher than that of bulk carbon nitride. The enhanced photocatalytic hydrogen production was attributed to the higher charge-carrier transfer rate and widened light absorption range of the carbon nitride nanosheets after carbon self-doping. Thus, this work highlights the importance of carbon self-doping for improving the photocatalytic performance. Meanwhile, it provides a feasible method for the preparation of carbon self-doped carbon nitride without destroying the 2D conjugated backbone structures.

scholarly journals Two new inorganic–organic hybrid zinc phosphites and their derived ZnO/ZnS heterostructure for efficient photocatalytic hydrogen production

RSC Advances ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 812-817 ◽  
Author(s):  
Yayong Sun ◽  
Fupeng Wang ◽  
Yunlei Fu ◽  
Chao Chen ◽  
Xuanyi Wang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Photocatalytic Performance ◽  
Synthesis Process ◽  
Thermal Synthesis ◽  
Photocatalytic Hydrogen Production ◽  
Organic Hybrid ◽  
Zinc Phosphite

Though a solvo-thermal synthesis process, two novel inorganic–organic hybrid zinc phosphite were constructed. Using these hybrid zinc phosphite as template, the ZnO/ZnS heterostructures were prepared by a sulfuration method for enhanced photocatalytic performance.

Enhanced photocatalytic performance of black phosphorene by isoelectronic co-dopants

2019 ◽  
Vol 6 (9) ◽  
pp. 2369-2378 ◽  
Author(s):  
Xuhui Yang ◽  
Baisheng Sa ◽  
Chao Xu ◽  
Hongbing Zhan ◽  
Masakazu Anpo ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Band Gap ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Production ◽  
Black Phosphorene

Isoelectronic co-dopants enhance the photocatalytic hydrogen production properties without affecting the band gap feature of pure black phosphorene.

scholarly journals Incorporating Heteroatoms into Fluorene-type Conjugated Polymers for Enhanced Photocatalytic Hydrogen Production

2019 ◽  
Author(s):  
Yang Bai ◽  
Duncan J. Woods ◽  
Liam Wilbraham ◽  
Catherine Aitchison ◽  
Martijn Zwijnenburg ◽  
...  
Keyword(s):  
Particle Size ◽  
Hydrogen Production ◽  
Conjugated Polymers ◽  
Light Absorption ◽  
Driving Force ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Production ◽  
Hole Scavenger ◽  
Thermodynamic Driving Force

The photocatalytic performance of fluorene-type polymer photocatalysts for hydrogen production from water in the presence of a sacrificial hole scavenger is significantly improved by the incorporation of heteroatoms into the bridge-head. This improvement can be explained by a combination of factors, such as changes in thermodynamic driving-force, particle size, dispersibility under photocatalytic conditions, and light absorption.

CoP QD anchored carbon skeleton modified CdS nanorods as a co-catalyst for photocatalytic hydrogen production

Nanoscale ◽  
2020 ◽  
Vol 12 (37) ◽  
pp. 19203-19212 ◽  
Author(s):  
Qianqian Sun ◽  
Zebin Yu ◽  
Ronghua Jiang ◽  
Yanping Hou ◽  
Lei Sun ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Quantum Dot ◽  
Photocatalytic Performance ◽  
Carbon Skeleton ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Production ◽  
Cds Nanorods

CdS modified by CoP quantum dot anchored carbon skeleton exhibited excellent photocatalytic performance and photostability.

scholarly journals Incorporating Heteroatoms into Fluorene-type Conjugated Polymers for Enhanced Photocatalytic Hydrogen Production

2019 ◽  
Author(s):  
Yang Bai ◽  
Duncan J. Woods ◽  
Liam Wilbraham ◽  
Catherine Aitchison ◽  
Martijn Zwijnenburg ◽  
...  
Keyword(s):  
Particle Size ◽  
Hydrogen Production ◽  
Conjugated Polymers ◽  
Light Absorption ◽  
Driving Force ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Production ◽  
Hole Scavenger ◽  
Thermodynamic Driving Force

The photocatalytic performance of fluorene-type polymer photocatalysts for hydrogen production from water in the presence of a sacrificial hole scavenger is significantly improved by the incorporation of heteroatoms into the bridge-head. This improvement can be explained by a combination of factors, such as changes in thermodynamic driving-force, particle size, dispersibility under photocatalytic conditions, and light absorption.

Z-scheme photocatalytic hydrogen production over WO3/g-C3N4 composite photocatalysts

RSC Advances ◽  
2014 ◽  
Vol 4 (41) ◽  
pp. 21405-21409 ◽  
Author(s):  
Hideyuki Katsumata ◽  
Yusuke Tachi ◽  
Tohru Suzuki ◽  
Satoshi Kaneco
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Production ◽  
Charge Separation ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Production ◽  
Composite Photocatalysts ◽  
Efficient Charge

WO3/g-C3N4 catalysts exhibit excellent photocatalytic performance for H2 production from aqueous solution through the Z-scheme mechanism, which results in the efficient charge separation.

scholarly journals Roles of cocatalysts in semiconductor-based photocatalytic hydrogen production

2013 ◽  
Vol 371 (1996) ◽  
pp. 20110430 ◽  
Author(s):  
Jinhui Yang ◽  
Hongjian Yan ◽  
Xu Zong ◽  
Fuyu Wen ◽  
Meiying Liu ◽  
...  
Keyword(s):  
Activation Energy ◽  
Composite Material ◽  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Charge Separation ◽  
Reaction Rate ◽  
Photocatalytic Performance ◽  
Photocatalytic Reaction ◽  
Photocatalytic Hydrogen Production ◽  
Reduction And Oxidation

A photocatalyst is defined as a functional composite material with three components: photo-harvester (e.g. semiconductor), reduction cocatalyst (e.g. for hydrogen evolution) and oxidation cocatalyst (e.g. for oxidation evolution from water). Loading cocatalysts on semiconductors is proved to be an effective approach to promote the charge separation and transfer, suppress the charge recombination and enhance the photocatalytic activity. Furthermore, the photocatalytic performance can be significantly improved by loading dual cocatalysts for reduction and oxidation, which could lower the activation energy barriers, respectively, for the two half reactions. A quantum efficiency (QE) as high as 93 per cent at 420 nm for H 2 production has been achieved for Pt–PdS/CdS, where Pt and PdS, respectively, act as reduction and oxidation cocatalysts and CdS as a photo-harvester. The dual cocatalysts work synergistically and enhance the photocatalytic reaction rate, which is determined by the slower one (either reduction or oxidation). This work demonstrates that the cocatalysts, especially the dual cocatalysts for reduction and oxidation, are crucial and even absolutely necessary for achieving high QEs in photocatalytic hydrogen production, as well as in photocatalytic water splitting.

scholarly journals Flower-like hydrogen titanate nanosheets: preparation, characterization and their photocatalytic hydrogen production performance in the presence of Pt cocatalyst

RSC Advances ◽  
2020 ◽  
Vol 10 (46) ◽  
pp. 27652-27661
Author(s):  
Feng Dong ◽  
Guoqing Zhang ◽  
Yuan Guo ◽  
Baolin Zhu ◽  
Weiping Huang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Photocatalytic Performance ◽  
Production Performance ◽  
Photocatalytic Hydrogen Production ◽  
Hydrogen Titanate ◽  
Titanate Nanosheets

Hydrogen titanate nanosheets were assembled into the flower-like hydrogen titanate nanosheets to obtain high photocatalytic performance.

Incorporating Heteroatoms into Fluorene-type Conjugated Polymers for Enhanced Photocatalytic Hydrogen Production

2019 ◽  
Author(s):  
Yang Bai ◽  
Duncan J. Woods ◽  
Liam Wilbraham ◽  
Catherine Aitchison ◽  
Martijn Zwijnenburg ◽  
...  
Keyword(s):  
Particle Size ◽  
Hydrogen Production ◽  
Conjugated Polymers ◽  
Light Absorption ◽  
Driving Force ◽  
Photocatalytic Performance ◽  
Photocatalytic Hydrogen Production ◽  
Hole Scavenger ◽  
Thermodynamic Driving Force

The photocatalytic performance of fluorene-type polymer photocatalysts for hydrogen production from water in the presence of a sacrificial hole scavenger is significantly improved by the incorporation of heteroatoms into the bridge-head. This improvement can be explained by a combination of factors, such as changes in thermodynamic driving-force, particle size, dispersibility under photocatalytic conditions, and light absorption.

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