Journals / Atmospheric Pollution Research / 2020 / Cilt: 11 - Sayı: 2

A facile approach to synthesis carbon quantum dots-doped P25 visible-lightdriven photocatalyst with improved NO removal performance

Pages
303–309
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

It canbe concluded that the CQDs extend the light absorption range and adjust the band gap of pure P25.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The water-soluble carbon quantum dots (CQDs) and a novel composite photocatalyst CQDs/P25 have beenprepared by a one-step electrochemical-microwave method.
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Key Findings & Data:The experimental result shows that the photo-catalytic degradation of NO by this new kind of CQDs/P25 composite reaches 71%, which is approximately 1.65times than that of the pure P25 at room temperature.
💡
Conclusion & Impact:It canbe concluded that the CQDs extend the light absorption range and adjust the band gap of pure P25.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Özet

The water-soluble carbon quantum dots (CQDs) and a novel composite photocatalyst CQDs/P25 have beenprepared by a one-step electrochemical-microwave method. The experimental result shows that the photo-catalytic degradation of NO by this new kind of CQDs/P25 composite reaches 71%, which is approximately 1.65times than that of the pure P25 at room temperature. The initial concentration of NO pollutants is 10 ppm. Thephotocatalytic efficiency of the composite catalyst achieves the highest when the content of CQDs is 1%. It canbe concluded that the CQDs extend the light absorption range and adjust the band gap of pure P25. The highphotocatalytic performance of this new kind of photocatalyst can be mainly attributed to the unique up-con-versionfluorescence property, nanometer size effect and surface activity effect.

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Cite This Article

QİN, J., ZHAO, R., XİA, M. (2020). A facile approach to synthesis carbon quantum dots-doped P25 visible-lightdriven photocatalyst with improved NO removal performance. Atmospheric Pollution Research, Cilt: 11 - Sayı: 2, 303–309. https://ajindex.com/articles/351550

References (12)

  1. Avilés-García, O., Espino-Valencia, J., Romero, R., Rico-Cerda, J., Arroyo-Albiter, M.,Natividad, R., 2016. W and Mo doped TiO2: synthesis, characterization and photo-catalytic activity. Fuel 198, 31–34.
  2. Armstrong, A., Armstrong, G., Canales, J., Bruce, P., 2005. TiO2–B nanowires as negativeelectrodes for rechargeable lithium batteries. J. Power Sources 146, 501–506.
  3. Bai, M., Zhang, Z., Bai, M., 2012. Simultaneous desulfurization and denitrification offluegas by ·OH radicals produced from O2+and water vapor in a duct. Environ. Sci.Technol. 46, 10161–10168.
  4. Cao, L., Wang, X., Meziani, M., Lu, F., Wang, H., Luo, P., Lin, Y., Harruff, B., Veca, L.,Murray, D., Xie, S., Sun, Y., 2007. Carbon dots for multiphoton bioimaging. J. Am.Chem. Soc. 129, 11318–11319.
  5. Chen, L., Ho, Y., Guo, W., Huang, C., Pan, T., 2009. Enhanced visible light-induced photoelectrocatalytic degradation of phenol by carbon nanotube-doped TiO2elec-trodes. Electrochim. Acta 54, 3884–3891.
  6. Chen, P., Zhang, Q., Su, Y., Shen, L., Wang, Z., Liu, H., Liu, Y., Cai, Z., Lv, W., Liu, G.,2018. Accelerated photocatalytic degradation of diclofenac by a novel CQDs/BiOCOOH hybrid material under visible-light irradiation: dechloridation, detoxicity,and a new superoxide radical model study. Chem. Eng. J. 332, 737–748.
  7. Di, J., Xia, J., Ji, M., Wang, B., Yin, S., Zhang, Q., Chen, Z., Li, H., 2015. Carbon quantumdots modified BiOCl ultrathin nanosheets with enhanced molecular oxygen activationability for broad spectrum photocatalytic properties and mechanism insight. ACSAppl. Mater. Interfaces 7, 20111–20123.
  8. Giannakopoulou, T., Papailias, I., Todorova, N., Boukos, N., Liu, Y., Yu, J., Trapails, C.,2016. Tailoring the energy band gap and edges' potentials of g-C3N4/TiO2compositephotocatalysts for NOx removal. Chem. Eng. J. 310, 571–580.
  9. Gong, X., Zhao, R., Peng, M.Q., Wang, D., 2019. Experimental study on NO removal bysurface activated bamboo charcoal, Atmos. Pollut. Res. 10 (2), 474–479.
  10. He, D., Li, Y., Wang, I., Wu, J., Yang, Y., An, Q., 2016. Carbon wrapped and doped TiO2mesoporous nanostructure with efficient visible-light photocatalysis for NO removal.Appl. Surf. Sci. 391, 318–325.
  11. Hojamberdiev, M., Zhu, G., Liu, H., Kumar, M., Wang, M., Gao, J., 2018. MoS2quantumdots-modified porousβ-Bi2O3microspheres with enhanced visible-light-inducedphotocatalytic activity for Bisphenol A degradation and NO removal. J. Mater. Sci.30, 2610–2621.
  12. Hu, J., Chen, D., Li, N., Xu, Q., Li, H., He, J., Lu, J., 2018. Fabricatio