Rapid activation of Co3O4 cocatalysts with oxygen vacancies on TiO2 photoanodes for efficient water splitting

2018 ◽  
Vol 6 (42) ◽  
pp. 21003-21009 ◽  
Author(s):  
Guojun Dong ◽  
Hongyan Hu ◽  
Xiaojuan Huang ◽  
Yajun Zhang ◽  
Yingpu Bi
Keyword(s):  
Plasma Treatment ◽  
Water Splitting ◽  
Oxygen Vacancies ◽  
Photocurrent Density ◽  
Efficient Strategy ◽  
Highly Efficient ◽  
Ar Plasma ◽  
Rapid Activation

Herein, we demonstrate a rapid and highly efficient strategy for rationally constructing oxygen vacancies on Co3O4 cocatalysts by Ar-plasma treatment, and the photocurrent density could be achieved up to 2.5 mA cm−2 (1.23 VRHE) under AM 1.5G irradiation (100 mW cm−2).

Defective Fe3+ self-doped spinel ZnFe2O4 with oxygen vacancies for highly efficient photoelectrochemical water splitting

2019 ◽  
Vol 48 (31) ◽  
pp. 11934-11940 ◽  
Author(s):  
Jianmin Wang ◽  
Yunan Wang ◽  
Xinchao Xv ◽  
Yan Chen ◽  
Xi Yang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Vacancies ◽  
Photoelectrochemical Water Splitting ◽  
Photoelectrochemical Performance ◽  
Highly Efficient

Defective Fe3+ self-doped spinel ZnFe2O4 with abundant oxygen vacancies exhibits largely enhanced photoelectrochemical performance.

Ultrathin NiCo2O4 nanosheets with dual-metal active sites for enhanced solar water splitting of a BiVO4 photoanode

2019 ◽  
Vol 7 (39) ◽  
pp. 22274-22278 ◽  
Author(s):  
Chenchen Feng ◽  
Qi Zhou ◽  
Bin Zheng ◽  
Xiang Cheng ◽  
Yajun Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Active Sites ◽  
Oxygen Vacancies ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Highly Efficient ◽  
Dual Metal ◽  
Nico2o4 Nanosheets ◽  
First Time

Spinel-structured NiCo2O4 nanosheets with dual-metal active sites, an ultrathin structure, and abundant oxygen vacancies were decorated for the first time on a BiVO4 photoanode for highly efficient PEC water oxidation.

The synergetic effect of graphene on Cu2O nanowire arrays as a highly efficient hydrogen evolution photocathode in water splitting

2014 ◽  
Vol 2 (43) ◽  
pp. 18383-18397 ◽  
Author(s):  
Amare Aregahegn Dubale ◽  
Wei-Nien Su ◽  
Andebet Gedamu Tamirat ◽  
Chun-Jern Pan ◽  
Belete Asefa Aragaw ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Nanowire Array ◽  
Synergetic Effect ◽  
Photocurrent Density ◽  
Nanowire Arrays ◽  
Highly Efficient

The graphene modified Cu2O nanowire array demonstrates improved photocurrent density and photostability, attributed to the synergetic effect of graphene.

Sandwich structured WO3 nanoplatelets for highly efficient photoelectrochemical water splitting

2019 ◽  
Vol 7 (45) ◽  
pp. 26077-26088 ◽  
Author(s):  
Guangwei Zheng ◽  
Jinshu Wang ◽  
Guannan Zu ◽  
Haibing Che ◽  
Chen Lai ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photocurrent Density ◽  
Photoelectrochemical Water Splitting ◽  
Highly Efficient ◽  
Pec Water Splitting

Promising PEC water splitting activity with a photocurrent density of 3.16 mA cm−2 at 1.23 V vs. RHE was demonstrated in sandwich structured WO3 with exposed highly reactive (002) facet and superior crystallinity of 2-D nanoplatelets.

Fabricating highly efficient heterostructured CuBi2O4 photocathodes for unbiased water splitting

2020 ◽  
Vol 8 (5) ◽  
pp. 2498-2504 ◽  
Author(s):  
Sabiha Akter Monny ◽  
Lei Zhang ◽  
Zhiliang Wang ◽  
Bin Luo ◽  
Muxina Konarova ◽  
...  
Keyword(s):  
Water Splitting ◽  
Photocurrent Density ◽  
Onset Potential ◽  
Highly Efficient ◽  
Splitting System

Efficient CuBi2O4 based photocathode with large onset potential (1.1 VSHE) and high photocurrent density (1.87 mA cm−2 at 0.6 VSHE) has been fabricated for constructing the unbiased water splitting system with the suitable photoanode.

scholarly journals Nitrogen-incorporation activates NiFeOx catalysts for efficiently boosting oxygen evolution activity and stability of BiVO4 photoanodes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Beibei Zhang ◽  
Shiqiang Yu ◽  
Ying Dai ◽  
Xiaojuan Huang ◽  
Lingjun Chou ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Low Cost ◽  
Photocurrent Density ◽  
Partial Substitution ◽  
Hydrogen Electrode ◽  
Highly Efficient ◽  
Promising Strategy ◽  
N Incorporation ◽  
Pec Water Splitting

AbstractDeveloping low-cost and highly efficient catalysts toward the efficient oxygen evolution reaction (OER) is highly desirable for photoelectrochemical (PEC) water splitting. Herein, we demonstrated that N-incorporation could efficiently activate NiFeOx catalysts for significantly enhancing the oxygen evolution activity and stability of BiVO4 photoanodes, and the photocurrent density has been achieved up to 6.4 mA cm−2 at 1.23 V (vs. reversible hydrogen electrode (RHE), AM 1.5 G). Systematic studies indicate that the partial substitution of O sites in NiFeOx catalysts by low electronegative N atoms enriched the electron densities in both Fe and Ni sites. The electron-enriched Ni sites conversely donated electrons to V sites of BiVO4 for restraining V5+ dissolution and improving the PEC stability, while the enhanced hole-attracting ability of Fe sites significantly promotes the oxygen-evolution activity. This work provides a promising strategy for optimizing OER catalysts to construct highly efficient and stable PEC water splitting devices.

Boost quantum efficiency of BiVO4 photoanode by increasing oxygen vacancies for highly-efficient solar water oxidation

2021 ◽  
Author(s):  
Bin Li ◽  
Qi Qin ◽  
Chuanyong Jian ◽  
Qian Cai ◽  
Wei Liu
Keyword(s):  
Charge Transport ◽  
Water Splitting ◽  
Quantum Efficiency ◽  
Water Oxidation ◽  
Oxygen Vacancies ◽  
Diffusion Length ◽  
Solar Water ◽  
Highly Efficient ◽  
Solar Water Oxidation ◽  
Pec Water Splitting

BiVO4 (BVO) is a promising photoanode material for photoelectrochemical (PEC) water splitting. However, it is severely restricted by its short charge diffusion length and poor charge transport. Introducing oxygen vacancies...

Plasma treated Bi2WO6 ultrathin nanosheets with oxygen vacancies for improved photocatalytic CO2 reduction

2020 ◽  
Vol 7 (3) ◽  
pp. 597-602 ◽  
Author(s):  
Qidi Li ◽  
Xingwang Zhu ◽  
Jinman Yang ◽  
Qing Yu ◽  
Xianglin Zhu ◽  
...  
Keyword(s):  
Plasma Treatment ◽  
Oxygen Vacancies ◽  
Co2 Reduction ◽  
Generation Rate ◽  
Surface Oxygen ◽  
Ultrathin Nanosheets ◽  
Ar Plasma

Ar-plasma treatment quickly and effectively increased the amount of oxygen vacancies on the surface of Bi2WO6. In photocatalytic CO2 reduction, the CO generation rate of Bi2WO6 with abundant surface oxygen vacancies increased by 2.4 times.

In situ growth of porous TiO2 with controllable oxygen vacancies on an atomic scale for highly efficient photocatalytic water splitting

2020 ◽  
Vol 10 (16) ◽  
pp. 5659-5665 ◽  
Author(s):  
Fan Yang ◽  
Ruizhuang Yang ◽  
Lin Yan ◽  
Xiaolin Liu ◽  
Xuan Luo ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Vacancies ◽  
Atomic Scale ◽  
In Situ Growth ◽  
Photocatalytic Efficiency ◽  
Photocatalytic Water Splitting ◽  
Porous Tio2 ◽  
Highly Efficient

In situ regulation of oxygen vacancies of porous TiO2 at atomic scale with promoting photocatalytic efficiency.

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