scholarly journals One-pot construction of robust BiOCl/ZnO p-n heterojunctions with semi-coherent interfaces toward improving charge separation for photodegradation enhancement

2021 ◽  
Author(s):  
Xiaoli Yang ◽  
Shaodong Sun ◽  
Jie Cui ◽  
Man Yang ◽  
Qing Yang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Separation ◽  
Stability Limit ◽  
Effective Strategy ◽  
One Pot ◽  
Interface Interaction ◽  
The Poor ◽  
Spatial Charge ◽  
Coherent Interfaces

Heterojunction engineering is an effective strategy to enhance photodegradation activity via improving the spatial charge separation. However, the poor interface interaction and stability limit the photocatalytic activity of traditional heterojunction....

scholarly journals Enhanced Photocatalytic Activity of BiVO4/Bi2S3/SnS2 Heterojunction under Visible Light

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1294
Author(s):  
Sopheak Meng ◽  
Takaya Ogawa ◽  
Hideyuki Okumura ◽  
Keiichi N. Ishihara
Keyword(s):  
Photocatalytic Activity ◽  
Charge Transfer ◽  
Photoelectron Spectroscopy ◽  
Charge Separation ◽  
Solvothermal Synthesis ◽  
Photocatalytic Performance ◽  
Binding Energies ◽  
X Ray ◽  
Spatial Charge ◽  
Photodegradation Rate

Heterojunction photocatalysts have attracted a significant amount of attention due to their advantages over a single photocatalyst and, particularly, their superior spatial charge separation. Herein, the BiVO4/Bi2S3/SnS2 heterojunction was synthesized via solvothermal synthesis with different ratios of BiVO4 to SnS2. The photodegradation rate of the 0.03 BiVO4/SnS2 sample for rhodamine B removal is 2.3 times or 2.9 times greater than that of a single SnS2 or BiVO4, respectively. The chemical bond between photocatalysts is confirmed by X-ray photoelectron spectroscopy (XPS), and the synchronized shift observed in binding energies strongly indicates the electron screening effect at the heterojunction. A Z-scheme model is proposed to explain charge transfer pathway in the system, in which the formation of Bi2S3 plays a crucial role in the enhanced photocatalytic performance of the heterojunction.

Spatial charge separation and high-index facet dependence in polyhedral Cu2O type-II surface heterojunctions for photocatalytic activity enhancement

2021 ◽  
Author(s):  
Xin Zhang ◽  
Shaodong Sun ◽  
Jie Cui ◽  
Man Yang ◽  
Qiao Zhang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Charge Separation ◽  
High Index ◽  
Type Ii ◽  
Efficient Strategy ◽  
Spatial Charge ◽  
Activity Enhancement

Surface heterojunction engineering has been demonstrated to be an efficient strategy for the spatial charge separation of photocatalysts. As a consequence, the improved photocatalytic activity is highly determined by the...

CuTCPP hybridized Bi2MoO6 composite with enhanced photocatalytic activity

2018 ◽  
Vol 22 (06) ◽  
pp. 469-474 ◽  
Author(s):  
Zhijie Zhang ◽  
Hairui Huang ◽  
Shu Sun ◽  
Jiayue Xu ◽  
Na Zhang
Keyword(s):  
Photocatalytic Activity ◽  
Charge Separation ◽  
Solar Light ◽  
Utilization Rate ◽  
Effective Strategy ◽  
Simulated Solar Light ◽  
Porphyrin Derivatives ◽  
Response Range ◽  
Photocatalytic System ◽  
Photo Response

In order to increase the availability of the solar light, a Cu(II) meso-tetra(4-carboxyphenyl)porphyrin (CuTCPP) sensitizer was introduced into Bi2MoO6 photocatalyst. The obtained CuTCPP/Bi2MoO6 composite exhibited much enhanced photocatalytic activity in the degradation of rhodamine B (RhB) under both simulated solar light and visible light beyond the absorption edge of Bi2MoO6 (λ > 500 nm), which can be attributed to the broadened photo-response range, as well as the increased charge separation rate of the CuTCPP/Bi2MoO6 composite. Our study demonstrates that hybridizing with porphyrin derivatives can be an effective strategy to increase the utilization rate of the solar light efficiently in a photocatalytic system.

Efficient spatial charge separation in unique 2D tandem heterojunction CdxZn1−xIn2S4–CdS–MoS2 rendering highly-promoted visible-light-induced H2 generation

2021 ◽  
Vol 9 (1) ◽  
pp. 482-491
Author(s):  
Jiakun Wu ◽  
Bowen Sun ◽  
Hui Wang ◽  
Yanyan Li ◽  
Ying Zuo ◽  
...  
Keyword(s):  
Visible Light ◽  
Charge Separation ◽  
Effective Charge ◽  
Active Sites ◽  
H2 Generation ◽  
Highly Efficient ◽  
Spatial Charge

Unique 2D heterostructures CdxZn1−xIn2S4–CdS–MoS2 with effective charge separation, excellent light-harvest, and abundant active sites are highly-efficient for photocatalytic H2 evolution.

scholarly journals In-situ synthesis of CN@La(OH)3 nanocomposite for improved the charge separation and enhanced the photocatalytic activity towards Cr(VI) reduction under visible light

2021 ◽  
pp. 100048
Author(s):  
Amanulla Baishnisha ◽  
Krishnan Divakaran ◽  
Vellaichamy Balakumar ◽  
Venkidusamy Sasirekha ◽  
Chandran Meenakshi ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Charge Separation ◽  
In Situ Synthesis
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