The band structure and photocatalytic mechanism for a CeO2-modified C3N4 photocatalyst

2017 ◽  
Vol 41 (18) ◽  
pp. 9724-9730 ◽  
Author(s):  
Zhongxing Han ◽  
Yanlong Yu ◽  
Wenjun Zheng ◽  
Yaan Cao
Keyword(s):  
Photocatalytic Activity ◽  
Band Structure ◽  
Energy Band ◽  
Photocatalytic Mechanism

The matched energy band between CeO2 and C3N4 has enhanced the photocatalytic activity.

scholarly journals Construction of 2D/2D layered g-C3N4/Bi12O17Cl2 hybrid material with matched energy band structure and its improved photocatalytic performance

RSC Advances ◽  
2018 ◽  
Vol 8 (43) ◽  
pp. 24500-24508 ◽  
Author(s):  
Lei Shi ◽  
Weiwei Si ◽  
Fangxiao Wang ◽  
Wei Qi
Keyword(s):  
Photocatalytic Activity ◽  
Band Structure ◽  
Hybrid Material ◽  
Energy Band ◽  
Photocatalytic Performance ◽  
Energy Band Structure ◽  
Surface Contact

Surface-to-surface contact g-C3N4/Bi12O17Cl2 hybrid material with a matched energy band structure could efficiently transfer photoinduced charges, improving the photocatalytic activity.

scholarly journals Synthesis and Enhanced Light Photocatalytic Activity of Modulating Band BiOBrXI1−X Nanosheets

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2940
Author(s):  
Bingke Zhang ◽  
Shengwen Fu ◽  
Dongbo Wang ◽  
Shujie Jiao ◽  
Zhi Zeng ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Band Structure ◽  
Energy Band ◽  
Organic Pollutant ◽  
Molecular Vibration ◽  
Redox Potentials ◽  
Highly Active ◽  
Band Position ◽  
Carrier Separation ◽  
Solvothermal Methods

The photocatalysis technique has been proven to be a promising method to solve environmental pollution in situations of energy shortage, and has been intensively investigated in the field of pollutant degradation. In this work, a band structure-controlled solid solution of BiOBrXI1−X (x = 0.00, 0.05, 0.10, 0.15, 0.20, 1.00) with highly efficient light-driven photocatalytic activities was successfully synthesized via simple solvothermal methods. The phase composition, crystal structure, morphology, internal molecular vibration, optical properties, and energy band structure were characterized and analyzed by XRD, SEM, HRTEM, XPS, Raman, and UV Vis DRS. To evaluate the photocatalytic activity of BiOBrXI1−X, rhodamine B was selected as an organic pollutant. In particular, BiOBr0.15I0.85 displayed significantly enhanced photocatalytic activity by virtue of modulating the energy band position, optimizing redox potentials, and accelerating carrier separation. Moreover, the enhancement mechanism was elucidated on the basis of band structure engineering, which provides ideas for the design of highly active photocatalysts for practical application in the fields of environmental issues and energy conservation.

In situ synthesis of Cl-doped Bi2O2CO3 and its enhancement of photocatalytic activity by inducing generation of oxygen vacancies

2020 ◽  
Vol 7 (16) ◽  
pp. 2969-2978
Author(s):  
Jie-hao Li ◽  
Jie Ren ◽  
Ying Liu ◽  
Hui-ying Mu ◽  
Rui-hong Liu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Ionic Liquids ◽  
Oxygen Vacancy ◽  
Oxygen Vacancies ◽  
In Situ Synthesis ◽  
Photocatalytic Mechanism

Cl-Doped Bi2O2CO3 is prepared using ionic liquids as dopants and the oxygen-vacancy-induced photocatalytic mechanism is revealed.

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