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 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.

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.

B-doped 3C-SiC nanowires with a finned microstructure for efficient visible light-driven photocatalytic hydrogen production

Nanoscale ◽  
2015 ◽  
Vol 7 (19) ◽  
pp. 8955-8961 ◽  
Author(s):  
Tao Yang ◽  
Xiwang Chang ◽  
Junhong Chen ◽  
Kuo-Chih Chou ◽  
Xinmei Hou
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Band Gap ◽  
Photocatalytic Hydrogen Production ◽  
Single Crystalline ◽  
Sic Nanowires ◽  
Visible Light Driven ◽  
Crystalline Nature ◽  
Single Crystalline Nature

B-doped 3C-SiC nanowires with a finned microstructure have been synthesized. Due to the smaller band gap, the finned microstructure, and the single crystalline nature, the B-doped 3C-SiC nanowires demonstrate efficient activity as high as 108.4 μmol h−1g−1for H2production.

scholarly journals Photocatalytic Hydrogen Production from Water on Ga, Sn-Doped ZnS under Visible Light Irradiation

2014 ◽  
Vol 925 ◽  
pp. 200-204
Author(s):  
Leny Yuliati ◽  
Melody Kimi ◽  
Mustaffa Shamsuddin
Keyword(s):  
Photocatalytic Activity ◽  
Hydrogen Production ◽  
Visible Light ◽  
Band Gap ◽  
Visible Light Irradiation ◽  
Absorption Edge ◽  
Band Gap Energy ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Production ◽  
Gap Energy

Zinc sulfide (ZnS) has been reported to act as a photocatalyts to reduce water to hydrogen. However, ZnS could not work under visible light irradiation due to its large band gap energy. In order to improve the performance of ZnS, Ga and Sn were doped to ZnS. The series of Ga (0.1),Sn (x)-ZnS with various amounts of Sn (x) was prepared by hydrothermal method. XRD patterns suggested that the addition of Ga might reduce the crystallinity of ZnS, suggesting that Ga might inhibit the crystal growth or agglomeration of ZnS. On the other hand addition of Sn did not much affect the structure of the Ga (0.1)-ZnS. The DR UU-visible spectra confirmed the red shift of the absorption edge with the addition of Ga due to the reduced band gap energy, while the addition of Sn did not much shift the absorption edge of the Ga (0.1)-ZnS to longer wavelength. FESEM images showed that all the prepared samples have sphere-shaped particles and no remarkable change was observed with the addition of Ga or Sn. The photocatalytic hydrogen production from water was carried out at room temperature in the presence of sacrificial agent under visible light irradiation. While ZnS did not show activity under visible light, all the prepared Ga (0.1)-ZnS and Ga (0.1),Sn (x)-ZnS samples exhibited photocatalytic activity for hydrogen production. The highest hydrogen production was achieved on Ga (0.1),Sn (0.01)-ZnS, which activity was ca. three times higher than that of the single doped Ga (0.1)-ZnS. This study clearly showed that Sn acted as a good co-dopant to increase the photocatalytic activity of Ga (0.1)-ZnS for hydrogen production from water under visible light irradiation.

Photocatalytic effect of SrZnO2 thin films

2013 ◽  
Vol 1601 ◽  
Author(s):  
Tohru Okamoto ◽  
Taro Ogita ◽  
Susumu Harako ◽  
Shuji Komuro ◽  
Xinwei Zhao
Keyword(s):  
Thin Films ◽  
Laser Ablation ◽  
Hydrogen Production ◽  
Band Gap ◽  
Water Splitting ◽  
Applied Bias ◽  
Photocatalytic Hydrogen Production ◽  
Laser Ablation Method ◽  
Photocatalytic Effect

ABSTRACTThe SrZnO2 thin films were fabricated by using laser ablation method. The films were annealed after deposition in order to improve the crystallinity. Water splitting experiments were carried out and hydrogen production over the SrZnO2 thin films were confirmed with no applied bias. The band gap of SrZnO2 was 3.41 eV which is 0.15 eV larger than that of ZnO. It suggests that the band gap was increased by doping Sr to ZnO, and the reducibility was improved. As a result, the rate of photocatalytic hydrogen production over the SrZnO2 was increased compared to ZnO.

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.

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.

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