High-efficiency SrTiO3/TiO2 hetero-photoanode for visible-light water splitting by charge transport design and optical absorption management

Nanoscale ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 3644-3649 ◽  
Author(s):  
Xiang Cheng ◽  
Yajun Zhang ◽  
Hongyan Hu ◽  
Mingdong Shang ◽  
Yingpu Bi
Keyword(s):  
Optical Absorption ◽  
Visible Light ◽  
Charge Transport ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
High Efficiency ◽  
Light Irradiation ◽  
Light Water

We demonstrated a two-pronged approach to obtain excellent visible-light performance of TiO2-based photoelectrodes for water oxidation, which exhibited remarkably improved PEC performance for water splitting under visible light irradiation.

Visible light-driven novel g-C3N4/NiFe-LDH composite photocatalyst with enhanced photocatalytic activity towards water oxidation and reduction reaction

2015 ◽  
Vol 3 (36) ◽  
pp. 18622-18635 ◽  
Author(s):  
Susanginee Nayak ◽  
Lagnamayee Mohapatra ◽  
Kulamani Parida
Keyword(s):  
Photocatalytic Activity ◽  
Composite Materials ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
Reduction Reaction ◽  
Light Irradiation ◽  
Composite Photocatalyst ◽  
Visible Light Driven

Dispersion of exfoliated CN over the surface of exfoliated LDH composite materials, and its photocatalytic water splitting under visible-light irradiation.

scholarly journals Photocatalytic Hydrogen or Oxygen Evolution from Water over S- or N-Doped TiO2under Visible Light

2008 ◽  
Vol 2008 ◽  
pp. 1-7 ◽  
Author(s):  
Kazumoto Nishijima ◽  
Takaaki Kamai ◽  
Naoya Murakami ◽  
Toshiki Tsubota ◽  
Teruhisa Ohno
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
Photocatalytic Oxidation ◽  
High Efficiency ◽  
Uv Light ◽  
Anatase Phase ◽  
Rutile Phase ◽  
Activity Level ◽  
Light Irradiation

S- or N-doping ofTiO2powder having an anatase or rutile phase extended the photocatalytic activity for water oxidation and reduction under UV light and visible light irradiation. For the reduction of water, anatase-dopedTiO2showed higher level of activity than that of dopedTiO2having a rutile phase using ethanol as an electron donor. Furthermore, the activity level of S-dopedTiO2for hydrogen evolution was higher than that of N-dopedTiO2photocatalysts under visible light. Photocatalytic oxidation of water on dopedTiO2having a rutile phase proceeded with fairly high efficiency whenFe3+ions were used as electron acceptors compared to that on dopedTiO2having an anatase phase. In addition, water splitting under visible light irradiation was achieved by construction of a Z-scheme photocatalysis system employing the dopedTiO2having anatase and rutile phases forH2andO2evolution and theI−/IO3−redox couple as an electron relay.

Semiconductor Photocatalysts for Solar-to-Hydrogen Energy Conversion: Recent Advances of CdS

2020 ◽  
Vol 16 ◽  
Author(s):  
Yuxue Wei ◽  
Honglin Qin ◽  
Jinxin Deng ◽  
Xiaomeng Cheng ◽  
Mengdie Cai ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Noble Metals ◽  
Light Irradiation ◽  
Photocatalytic Hydrogen Evolution ◽  
Theoretical Design ◽  
Recent Developments

Introduction: Solar-driven photocatalytic hydrogen production from water splitting is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. In this review, recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. In particular, the factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Background: Photocatalytic hydrogen evolution from water splitting using photocatalyst semiconductors is one of the most promising solutions to satisfy the increasing demands of a rapidly developing society. CdS has emerged as a representative semiconductor photocatalyst due to its suitable band gap and band position. However, the poor stability and rapid charge recombination of CdS restrict its application for hydrogen production. The strategy of using a cocatalyst is typically recognized as an effective approach for improving the activity, stability, and selectivity of photocatalysts. Methods: This review summarizes the recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation. Results: Recent developments in CdS cocatalysts for hydrogen production from water splitting under visible-light irradiation are summarized. The factors affecting the photocatalytic performance and new cocatalyst design, as well as the general classification of cocatalysts, are discussed, which includes a single cocatalyst containing noble-metal cocatalysts, non-noble metals, metal-complex cocatalysts, metal-free cocatalysts, and multi-cocatalysts. Finally, future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are described. Conclusion: The state-of-the-art CdS for producing hydrogen from photocatalytic water splitting under visible light is discussed. The future opportunities and challenges with respect to the optimization and theoretical design of cocatalysts toward the CdS photocatalytic hydrogen evolution are also described.

Linking Melem with Conjugated Schiff-Base Bond to Boost Photocatalytic Efficiency of Carbon Nitride for Overall Water Splitting

Nanoscale ◽  
2021 ◽  
Author(s):  
Hu Liu ◽  
Mengqi Shen ◽  
Peng Zhou ◽  
Zhi Guo ◽  
Xinyang Liu ◽  
...  
Keyword(s):  
Schiff Base ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Carbon Nitride ◽  
Light Irradiation ◽  
Graphitic Carbon Nitride ◽  
Photocatalytic Efficiency ◽  
Metal Free ◽  
Overall Water Splitting

Developing an efficient single component photocatalyst for overall water splitting under visible-light irradiation is extremely challenging. Herein, we report a metal-free graphitic carbon nitride (g-CxN4)-based nanosheet photocatalyst (x = 3.2,...

Construction of Z-Scheme Bi3TaO7/Zn0.5Cd0.5S composites with high-efficiency for levofloxacin degradation under visible light irradiation

2021 ◽  
Author(s):  
Jingjing Xu ◽  
Yang liu ◽  
xueping li ◽  
Mindong Chen
Keyword(s):  
Visible Light ◽  
Hydrothermal Method ◽  
Visible Light Irradiation ◽  
High Efficiency ◽  
Light Irradiation ◽  
In Situ Growth ◽  
Composite Photocatalysts ◽  
Photocatalytic Activities

Direct Z-scheme Bi3TaO7/Zn0.5Cd0.5S composite photocatalysts were successfully prepared via an in-situ growth hydrothermal method. The photocatalytic activities of composites were investigated by the degradation of levofloxacin under visible light. And...

One-step synthesis of CoO/g-C3N4 composites by thermal decomposition for overall water splitting without sacrificial reagents

2017 ◽  
Vol 4 (10) ◽  
pp. 1691-1696 ◽  
Author(s):  
Mumei Han ◽  
Huibo Wang ◽  
Siqi Zhao ◽  
Lulu Hu ◽  
Hui Huang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Overall Water Splitting ◽  
One Step ◽  
Good Photocatalytic Performance

10%CoO/g-C3N4 exhibits good photocatalytic performance under visible light irradiation without any sacrificial reagents.

scholarly journals Developments of the Efficient Water-splitting Electrodes under the Visible Light Irradiation

2009 ◽  
Vol 77 (1) ◽  
pp. 44-50 ◽  
Author(s):  
Yoshinori MURAKAMI ◽  
Ponchio CHATCHAI ◽  
Yoshio NOSAKA
Keyword(s):  
Visible Light ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Light Irradiation

N-Heterocyclic Dicarbene Iridium(III) Catalysts Enabling Water Oxidation under Visible Light Irradiation

2014 ◽  
Vol 2014 (4) ◽  
pp. 568-568 ◽  
Author(s):  
Andrea Volpe ◽  
Andrea Sartorel ◽  
Cristina Tubaro ◽  
Laura Meneghini ◽  
Marilena Di Valentin ◽  
...  
Keyword(s):  
Visible Light ◽  
Visible Light Irradiation ◽  
Water Oxidation ◽  
Light Irradiation

scholarly journals Photocatalytic NO removal over calcium-bridged siloxenes under ultraviolet and visible light irradiation

2018 ◽  
Vol 47 (20) ◽  
pp. 7070-7076 ◽  
Author(s):  
Haruo Imagawa ◽  
Xiaoyong Wu ◽  
Hiroshi Itahara ◽  
Shu Yin ◽  
Kazunobu Kojima ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Absorption Band ◽  
Optical Absorption ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Ultraviolet Region ◽  
No Removal ◽  
Optical Absorption Band

Ca-Bridged siloxenes with a wide optical absorption band from the visible to ultraviolet region exhibited photocatalytic activity for NO removal.

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