TEMPO oxidized nanofiber carbon quantum dots/TiO2 composites with enhanced photocatalytic activity for degradation of methylene blue

2021 ◽  
pp. 139297
Author(s):  
Jingwei Gong ◽  
Yanzhu Guo ◽  
Jie Lu ◽  
Yi Cheng ◽  
Haisong Wang
Keyword(s):  
Methylene Blue ◽  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Carbon Quantum Dots

Design and Fabrication of Carbon Quantum Dots/TiO2 Photonic Crystal Complex with Enhanced Photocatalytic Activity

2014 ◽  
Vol 14 (6) ◽  
pp. 4156-4163 ◽  
Author(s):  
Zhong Huang ◽  
Liang Fang ◽  
Wen Dong ◽  
Yang Liu ◽  
Zhenhui Kang
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Photonic Crystal ◽  
Carbon Quantum Dots ◽  
Crystal Complex

Carbon quantum dots/Zn2+ ions doped-CdS nanowires with enhanced photocatalytic activity for reduction of 4-nitroaniline to p-phenylenediamine

2018 ◽  
Vol 450 ◽  
pp. 1-8 ◽  
Author(s):  
Yuan-Yuan Chai ◽  
De-Peng Qu ◽  
De-Kun Ma ◽  
Wei Chen ◽  
Shaoming Huang
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Carbon Quantum Dots ◽  
Cds Nanowires

Dandelion-like ZnS/carbon quantum dots hybrid materials with enhanced photocatalytic activity toward organic pollutants

RSC Advances ◽  
2016 ◽  
Vol 6 (37) ◽  
pp. 31551-31558 ◽  
Author(s):  
Fangwang Ming ◽  
Jinqing Hong ◽  
Xun Xu ◽  
Zhoucheng Wang
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Organic Pollutants ◽  
Hybrid Materials ◽  
Carbon Quantum Dots

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

Bamboo prepared carbon quantum dots (CQDs) for enhancing Bi3Ti4O12 nanosheets photocatalytic activity

2018 ◽  
Vol 752 ◽  
pp. 106-114 ◽  
Author(s):  
Tao Wang ◽  
Xiqing Liu ◽  
Changchang Ma ◽  
Zhi Zhu ◽  
Yang Liu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Carbon Quantum Dots

Bi2O3/Carbon quantum dots heterostructured photocatalysts with enhanced photocatalytic activity

2017 ◽  
Vol 209 ◽  
pp. 220-223 ◽  
Author(s):  
Qinghe Que ◽  
Yonglei Xing ◽  
Zuoli He ◽  
Yawei Yang ◽  
Xingtian Yin ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Carbon Quantum Dots

scholarly journals Synergistic Effects of The Hybridization Between Boron-Doped Carbon Quantum Dots And n/n-Type g-C3N4 Homojunction For Boosted Visible-Light Photocatalytic Activity

2021 ◽  
Author(s):  
Sue Jiun Phang ◽  
Jiale Lee ◽  
Voon-Loong Wong ◽  
Lling-Lling Tan ◽  
Siang-Piao Chai
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Synergistic Effects ◽  
Cost Effective ◽  
Carbon Quantum Dots ◽  
Band Gap Energy ◽  
Hydrothermal Route ◽  
Kinetic Rate Constant ◽  
Thermal Stabilities ◽  
Boron Doped

Abstract Carbon quantum dots (CQDs) are particularly sought after for their highly tailorable photoelectrochemical and optical properties. Simultaneously, graphitic carbon nitride (g-C3N4) has also gained widespread attention due to its suitable band gap energy as well as excellent chemical and thermal stabilities. Herein, a novel boron-doped CQD (BCQD) hybridized g-C3N4 homojunction (CN) nanocomposite was rationally engineered and fabricated via a facile hydrothermal route. The optimal photocatalyst sample, 1-BCQD/CN (with a 1:3 mass ratio of boron to CQD) accomplished a Rhodamine B (RhB) degradation efficiency of 97.0 % within 4 hours under low-powered LED light irradiation. The kinetic rate constant of 1.39 x 10-2 min-1 achieved by the optimum sample was found to be 3.6- and 2.8-folds higher than that of pristine CN and un-doped CQD/CN, respectively. Furthermore, 1-BCQD/CN demonstrated remarkable stability, where it retained close to 99.0% of its initial photocatalytic efficiency after three consecutive cycles. The marked improvement in photocatalytic performance of 1-BCQD/CN was attributed to several concomitant factors such as enhanced electron migration from CN to BCQD, suppressed electron-hole recombination and significantly higher charge density in facilitating charge migration. Based on the scavenging tests, it was revealed that the photogenerated holes (h+), superoxide anions (∙O2–) and hydroxyl radicals (∙OH) were the primary reactive species responsible for the photodegradation process. Overall, the highly efficient 1-BCQD/CN composite with excellent photocatalytic activity could provide a cost-effective and robust means for addressing the increasing concerns over global environmental pollution.

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