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

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.

scholarly journals Research on correlation between corrosion resistance and photocatalytic activity of molybdenum zinc oxide modified by carbon quantum dots pigments

2020 ◽  
Vol 175 ◽  
pp. 108148
Author(s):  
Xiu-Rui Liu ◽  
Xiao-Xiao Sheng ◽  
Xiao-Yu Yuan ◽  
Jin-Ku Liu ◽  
Xiao-Wei Sun ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Zinc Oxide ◽  
Corrosion Resistance ◽  
Photocatalytic Activity ◽  
Carbon Quantum Dots
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