scholarly journals Solvothermal-Assisted Synthesis of Biomass Carbon Quantum Dots/Bismuth Oxyiodide Microflower for Enhanced Photocatalytic Activity

NANO ◽  
2018 ◽  
Vol 13 (03) ◽  
pp. 1850031 ◽  
Author(s):  
Xin Yao ◽  
Changchang Ma ◽  
Hai Huang ◽  
Zhi Zhu ◽  
Hongjun Dong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Separation Efficiency ◽  
Carbon Quantum Dots ◽  
Biomass Carbon ◽  
Electron Transfer Mechanism ◽  
Composite Photocatalyst ◽  
Major Activity ◽  
Facile Solvothermal Method ◽  
Insight Into

In this paper, the biomass carbon quantum dots (CQDs) modified flower-like BiOI (CQDs/BiOI) composite photocatalyst was synthesized by a facile solvothermal method. Compared with the pristine BiOI, the biomass CQDs/BiOI exhibited outstanding photocatalytic activity for degradation of the typical methylene blue (MB) under visible light irradiation since the biomass CQDs could act as electron acceptors to effectively facilitate the separation efficiency of photon-generated carriers and prolong their lifetime. Furthermore, the mechanism detection experiment showed that the [Formula: see text] and H[Formula: see text] were major activity species, and the photocatalytic electron transfer mechanism was further investigated. This work provided a new insight into biomass CQDs effects and took an important step toward the development of improving Bi-based semiconductor photocatalyst activity.

The fabrication of a biomass carbon quantum dot-Bi2WO6 hybrid photocatalyst with high performance for antibiotic degradation

2019 ◽  
Vol 43 (47) ◽  
pp. 18860-18867 ◽  
Author(s):  
Xu Tang ◽  
Yang Yu ◽  
Changchang Ma ◽  
Guosheng Zhou ◽  
Xinlin Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Photocatalytic Degradation ◽  
Hydrothermal Method ◽  
High Performance ◽  
Carbon Quantum Dots ◽  
Biomass Carbon ◽  
Carbon Quantum Dot ◽  
Antibiotic Degradation ◽  
Hybrid Photocatalyst

A novel biomass carbon quantum dots@Bi2WO6 photocatalyst was prepared by a dialysis-assisted hydrothermal method for the photocatalytic degradation of antibiotics.

Fabrication of TiO2/Cu Composite Photocatalyst Thin Film by 2-Step Mechanical Coating Technique and its Photocatalytic Activity

2011 ◽  
Vol 415-417 ◽  
pp. 1942-1948 ◽  
Author(s):  
Yun Lu ◽  
Liang Hao ◽  
Keisuke Toh ◽  
Hiroyuki Yoshida
Keyword(s):  
Thin Film ◽  
Photocatalytic Activity ◽  
Separation Efficiency ◽  
Composite Thin Film ◽  
X Ray Diffraction ◽  
Composite Photocatalyst ◽  
Coating Technique ◽  
Cu Thin Film ◽  
Mechanical Coating ◽  
Mass Increase

A novel TiO2/Cu composite photocatalyst thin film was successfully fabricated by 2-step Mechanical Coating Technique (2-step MCT). The composite photocatalyst thin film was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), among others. The formation process of Cu thin film and TiO2/Cu composite photocatalyst thin film were also examined. The results revealed that the formation of Cu thin film can fall into the following stages: nucleation, growth of nuclei and connection, formation and thickening of continuous thin film, and the exfoliation of thin film. In addition, TiO2/Cu composite thin film had a composite microstructure of TiO2islands coated on Cu thin film. Furthermore, the photocatalytic activity of TiO2/Cu composite photocatalyst thin film was evaluated by measuring the degradation rate of methylene blue (MB). Enhancement on the photocatalytic activity of TiO2was confirmed. The improvement of the photocatalytic activity of TiO2/Cu composite photocatalyst thin film should result from the increase of the charge separation efficiency and the mass increase of TiO2in the composite thin film.

Facile one-step synthesis of cerium oxide-carbon quantum dots/RGO nanohybrid catalyst and its enhanced photocatalytic activity

2017 ◽  
Vol 43 (3) ◽  
pp. 3072-3079 ◽  
Author(s):  
Ramanujam Kannan ◽  
Ae Rhan Kim ◽  
Seong Kug Eo ◽  
Seong Ho Kang ◽  
Dong Jin Yoo
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Cerium Oxide ◽  
Carbon Quantum Dots ◽  
One Step

Synthesis and photocatalytic activity of g-C3N4/BiOI/BiOBr ternary composites

RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 41204-41213 ◽  
Author(s):  
Ding Yuan ◽  
Liying Huang ◽  
Yeping Li ◽  
Yuanguo Xu ◽  
Hui Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Solvothermal Method ◽  
Ternary Composite ◽  
Composite Photocatalyst ◽  
Facile Solvothermal Method

A novel ternary composite photocatalyst (g-C3N4/BiOI/BiOBr) was prepared via a facile solvothermal method.

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