Enhancing Light Absorption and Prolonging Charge Separation in Carbon Quantum Dots via Cl-Doping for Visible-Light-Driven Photocharge-Transfer Reactions

2021 ◽  
Author(s):  
G. Murali ◽  
Jeevan Kumar Reddy Modigunta ◽  
Seongmin Park ◽  
Seongeun Lee ◽  
Hwiyoung Lee ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Light Absorption ◽  
Charge Separation ◽  
Carbon Quantum Dots ◽  
Transfer Reactions ◽  
Visible Light Driven

Synthesis of carbon quantum dot-surface modified P25 nanocomposites for photocatalytic degradation of p-nitrophenol and acid violet 43

RSC Advances ◽  
2014 ◽  
Vol 4 (58) ◽  
pp. 30605-30609 ◽  
Author(s):  
Fengying Zheng ◽  
Zhenhua Wang ◽  
Jie Chen ◽  
ShunXing Li
Keyword(s):  
Quantum Dots ◽  
Water Treatment ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Carbon Quantum Dots ◽  
Chemical Adsorption ◽  
Carbon Quantum Dot ◽  
Visible Light Driven ◽  
Surface Modified ◽  
Acid Violet

A new efficient and stable visible light driven photocatalyst, carbon quantum dots (CQDs)-surface modified P25 nanocomposite, was successfully prepared by chemical adsorption of CQDs onto the surface of TiO2 nanoparticles and then used for water treatment.

scholarly journals Synergistic effect of Ni–Ag–rutile TiO2 ternary nanocomposite for efficient visible-light-driven photocatalytic activity

RSC Advances ◽  
2020 ◽  
Vol 10 (60) ◽  
pp. 36930-36940 ◽  
Author(s):  
Petri M. Leukkunen ◽  
Ekta Rani ◽  
Assa Aravindh Sasikala Devi ◽  
Harishchandra Singh ◽  
Graham King ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Synergistic Effect ◽  
Visible Light ◽  
Light Absorption ◽  
Charge Separation ◽  
Effective Charge ◽  
Energy Dispersive ◽  
Intimate Contact ◽  
Visible Light Absorption ◽  
Visible Light Driven

Robust photocatalytic activity of Ni–Ag–RTiO2 is attributed to the improved visible light absorption and effective charge separation due to intimate contact between Ni and RTiO2via Ag, as evidenced by Ti3+ in Ti 2p XPS and energy dispersive mapping.

Visible-light-driven photocatalytic degradation of RhB by carbon-quantum-dot-modified g-C3N4 on carbon cloth

CrystEngComm ◽  
2021 ◽  
Author(s):  
Bolin Zhu ◽  
Xuefei Li ◽  
Yue Wang ◽  
Na Liu ◽  
Ye Tian ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Water Purification ◽  
Carbon Nitride ◽  
Carbon Quantum Dots ◽  
Carbon Cloth ◽  
Carbon Quantum Dot ◽  
Visible Light Driven

Highly efficient semiconductor photocatalysis technology is widely used for water purification. Herein, we prepared carbon quantum dots (CQDs)/graphitic carbon nitride (g-C3N4) on carbon cloth (CC). After the addition of CQDs,...

scholarly journals Construction of carbon quantum dots/single crystal TiO2 nanosheets with exposed {001} and {101} facets and their visible light driven catalytic activity

RSC Advances ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 3532-3541 ◽  
Author(s):  
Hongqin Huang ◽  
Hao Ouyang ◽  
Tiehu Han ◽  
Huigang Wang ◽  
Xuming Zheng
Keyword(s):  
Quantum Dots ◽  
Catalytic Activity ◽  
Visible Light ◽  
Single Crystal ◽  
Carbon Quantum Dots ◽  
Solvothermal Process ◽  
Tio2 Nanosheets ◽  
Visible Light Driven

Carbon quantum dots were doped into anatase TiO2 single crystal nanosheets (TNS) with highly exposed {001} and {101} reactive facets by a facile solvothermal process.

scholarly journals Visible-Light Driven TiO2 Photocatalyst Coated with Graphene Quantum Dots of Tunable Nitrogen Doping

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 344 ◽  
Author(s):  
Xiong Sun ◽  
Hui-Jun Li ◽  
Nanquan Ou ◽  
Bowen Lyu ◽  
Bojie Gui ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Light Absorption ◽  
Photocatalytic Performance ◽  
Light Emission ◽  
Graphene Quantum Dots ◽  
Visible Light Absorption ◽  
Visible Light Driven ◽  
Nitrogen Doped Graphene

Nitrogen doped graphene quantum dots (NGQDs) were successfully prepared via a hydrothermal method using citric acid and urea as the carbon and nitrogen precursors, respectively. Due to different post-treatment processes, the obtained NGQDs with different surface modifications exhibited blue light emission, while their visible-light absorption was obviously different. To further understand the roles of nitrogen dopants and N-containing surface groups of NGQDs in the photocatalytic performance, their corresponding composites with TiO2 were utilized to degrade RhB solutions under visible-light irradiation. A series of characterization and photocatalytic performance tests were carried out, which demonstrated that NGQDs play a significant role in enhancing visible-light driven photocatalytic activity and the carrier separation process. The enhanced photocatalytic activity of the NGQDs/TiO2 composites can possibly be attributed to an enhanced visible light absorption ability, and an improved separation and transfer rate of photogenerated carriers.

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