Boosting the photon absorption, exciton dissociation, and photocatalytic hydrogen- and oxygen-evolution reactions by built-in electric fields in Janus platinum dichalcogenides

2021 ◽  
Author(s):  
Xu Gao ◽  
Yanqing Shen ◽  
Jiajia Liu ◽  
Lingling Lv ◽  
Min Zhou ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Electric Fields ◽  
Light Absorption ◽  
High Performance ◽  
Photocatalytic Performance ◽  
Photon Absorption ◽  
Photogenerated Carrier ◽  
Exciton Dissociation ◽  
Carrier Separation

Monolayer Janus PtXY (platinum dichalcogenide) shows a high performance in solar light absorption, photogenerated carrier separation, and hydrogen- and oxygen-evolution reactions, resulting in a great photocatalytic performance for overall water-splitting.

ZnO photoelectrode simultaneously modified with Cu2O and Co-Pi based on broader light absorption and efficiently photogenerated carrier separation

2018 ◽  
Vol 5 (10) ◽  
pp. 2571-2578 ◽  
Author(s):  
Chonghao Ma ◽  
Zhifeng Liu ◽  
Qijun Cai ◽  
Changcun Han ◽  
Zhengfu Tong
Keyword(s):  
Water Splitting ◽  
Light Absorption ◽  
Photogenerated Carrier ◽  
Carrier Separation ◽  
Pec Water Splitting

A ZnO/Cu2O/Co-Pi photoelectrode is applied in PEC water splitting, improving the light absorption and photogenerated carrier separation.

CeO2 Nanocrystal Decorated TiO2 Nanobelt with Enhanced Photocatalytic Performance

2021 ◽  
Vol 21 (4) ◽  
pp. 2647-2652
Author(s):  
Yanchen Ji ◽  
Guoxin Song ◽  
Ruiqi Yang ◽  
Longhua Ding ◽  
Aizhu Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Water Treatment ◽  
Light Absorption ◽  
High Performance ◽  
Photocatalytic Performance ◽  
Synthesis Method ◽  
Charge Carriers ◽  
Controllable Synthesis ◽  
Visible Light Absorption ◽  
Potential Applications

In this work, CeO2 nanocrystal-decorated TiO2 nanobelt for forming a CeO2@TiO2 heterostructure. CeO2 plays a dual role in improving photocatalytic activity, not only by promoting the separation and transfer of photogenerated charge carriers, but also by increasing visible light absorption of the photocatalyst as a photosensitizer. The as-prepared CeO2@TiO2 heterostructure demonstrates the performance of organic degradation and H2 production (about 17 μmol/h/g, which is about 2.5 times higher than that of pure TiO2 nanobelts). Our work provides a facile and controllable synthesis method for high performance photocatalyst, which will have potential applications in synthesis clean/solar fuel, and photocatalytic water treatment.

Design of high-performance MoS2 edge supported single-metal atom bifunctional catalysts for overall water splitting via a simple equation

Nanoscale ◽  
2019 ◽  
Vol 11 (42) ◽  
pp. 20228-20237 ◽  
Author(s):  
Xiaopei Xu ◽  
Haoxiang Xu ◽  
Daojian Cheng
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Metal Atom ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Simple Equation ◽  
Bifunctional Catalysts ◽  
Overall Water Splitting

MoS2 edges exhibit good hydrogen evolution reaction (HER) activity but poor oxygen evolution reaction (OER) activity.

scholarly journals Facile Growth of Porous Hematite Films for Photoelectrochemical Water Splitting

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Shaohua Shen ◽  
Jiangang Jiang ◽  
Penghui Guo ◽  
Liejin Guo
Keyword(s):  
Water Splitting ◽  
High Performance ◽  
Carrier Transport ◽  
Photoelectrochemical Water Splitting ◽  
Photon Absorption ◽  
Photoelectrochemical Activity ◽  
Simple Method ◽  
Facile Fabrication ◽  
Single Precursor ◽  
Interfacial Charge

We introduced a simple fabrication method of porous hematite films with tunable thickness in an aqueous solution containing FeCl3as the single precursor. We demonstrated that the optimized thickness was necessary for high performance photoelectrochemical water splitting, by balancing photon absorption and charge carrier transport. The highest photocurrent ofca. 0.15 mA cm−2at 1.0 V versus Ag/AgCl was achieved on the 300 nm thick porous hematite film as photoanode, with IPCE at 370 nm and 0.65 V versus Ag/AgCl to be 9.0%. This simple method allows the facile fabrication of hematite films with porous nanostructure for enabling high photon harvesting efficiency and maximized interfacial charge transfer. These porous hematite films fabricated by this simple solution-based method could be easily modified by metal doping for further enhanced photoelectrochemical activity for water splitting.

Facile construction of self-supported Fe-doped Ni3S2 nanoparticle arrays for ultralow-overpotential oxygen evolution reaction

Nanoscale ◽  
2020 ◽  
Author(s):  
Ning Xie ◽  
Dong-Dong Ma ◽  
Xintao Wu ◽  
Qi-Long Zhu
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Water Oxidation ◽  
High Performance ◽  
Cost Effective ◽  
Nanoparticle Arrays ◽  
Overall Water Splitting ◽  
Construction Of Self ◽  
One Step

Constructing high-performance and cost-effective electrocatalysts for water oxidation, particularly for overall water splitting is extremely needed, whereas still challenging. Herein, based on an economical and facile one-step surface sulfurization strategy,...

The van der Waals CdO/PtS2 heterostructures for photocatalytic water splitting with excellent carrier separation and light absorption

2021 ◽  
Author(s):  
Iqtidar Ahmad ◽  
Ismail Shahid ◽  
Anwar Ali ◽  
Shakeel Zeb ◽  
Lei Gao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Light Absorption ◽  
Fossil Fuels ◽  
Van Der Waals ◽  
Environmental Issues ◽  
Photocatalytic Water Splitting ◽  
The Core ◽  
Carrier Separation

To overcome the regular exhaustion of fossil fuels and environmental issues, the hydrogen creation by photocatalytic water splitting has turn into the core heart of modern research. Here, the van...

Tuning mixed-phase Nb-doped titania films for high-performance photocatalysts with enhanced whole-spectrum light absorption

2019 ◽  
Vol 9 (21) ◽  
pp. 6027-6036
Author(s):  
Yuxin Min ◽  
Xiaoyang Yang ◽  
Dawei Wang ◽  
Kai Yang ◽  
Shisheng Zheng ◽  
...  
Keyword(s):  
Light Absorption ◽  
High Performance ◽  
Photocatalytic Performance ◽  
Anatase Phase ◽  
Mixed Phase ◽  
Titania Films ◽  
Doped Titania

Heterojunction of rutile and anatase phase enhanced photocatalytic performance of mixed-phase Nb doped titania films to degrade pollutants under visible (vis) light.

Phosphorus-triggered synergy of phase transformation and chalcogenide vacancy migration in cobalt sulfide for an efficient oxygen evolution reaction

Nanoscale ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 3129-3134 ◽  
Author(s):  
Suli Liu ◽  
Chenjing Che ◽  
Haiyan Jing ◽  
Jun Zhao ◽  
Xueqin Mu ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Cobalt Sulfide ◽  
Vacancy Migration ◽  
Overall Water Splitting

Featuring surface reorganization and phase transformation simultaneously on cobalt chalcogenide, Co0.37S0.38P0.02 exhibits excellent OER and HER activity and stability. Furthermore, it shows high performance towards overall water splitting.

Designed Ag-decorated Mn:ZnO nanocomposite: facile synthesis, and enhanced visible light absorption and photogenerated carrier separation

2020 ◽  
Vol 22 (46) ◽  
pp. 27272-27279
Author(s):  
Jing Li ◽  
Huan Yuan ◽  
Qiuping Zhang ◽  
Kaiyi Luo ◽  
Yutong Liu ◽  
...  
Keyword(s):  
Visible Light ◽  
Light Absorption ◽  
Polymer Network ◽  
Photogenerated Carrier ◽  
Facile Synthesis ◽  
Visible Light Absorption ◽  
Complex Architectures ◽  
Doped Zno ◽  
Carrier Separation ◽  
Mn Doped

A series of ZnO-based complex architectures including Mn-doped ZnO, Ag/ZnO and Ag-decorated Mn:ZnO nanocomposites were fabricated by a facile polymer network gel method.

Nanosized LiNi1−xFexPO4embedded in a mesoporous carbon matrix for high-performance electrochemical water splitting

2015 ◽  
Vol 51 (87) ◽  
pp. 15815-15818 ◽  
Author(s):  
Shaojun Ma ◽  
Qing Zhu ◽  
Zhi Zheng ◽  
Wenlou Wang ◽  
Dongming Chen
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Mesoporous Carbon ◽  
High Performance ◽  
Carbon Matrix ◽  
Highly Effective ◽  
Electrochemical Water Splitting ◽  
First Time ◽  
Electrochemical Oxygen

This work reports for the first time LiNi1−xFexPO4@C nanocomposites as highly effective catalysts for electrochemical oxygen evolution reaction (OER).

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