Ag/AgCl nanoparticles-modified CdSnO·3HO nanocubes photocatalyst for the degradation of methyl orange and antibiotics under visible light irradiation.

J Colloid Interface Sci

College of Environmental Science Engineering, Key Laboratory of Environmental Biology Pollution Control, Ministry of Education, Hunan University, Changsha 410082, China.

Published: November 2017

AI Article Synopsis

  • A novel photocatalyst composed of CdSnO·3HO nanocubes modified with Ag/AgCl nanoparticles was developed using an ultrasonic-assisted method.
  • The photocatalytic efficiency of the composite, specifically the 5-Ag/AgCl/CSH variant, was highlighted by significant degradation rates of pollutants like methyl orange (94% in 40 min), tetracycline (94% in 60 min), and oxytetracycline hydrochloride (90% in 60 min).
  • The enhanced photocatalytic activity is attributed to the unique properties of Ag/AgCl nanoparticles, which improve light absorption and efficiently separate electron-hole pairs during the reaction process.

Article Abstract

CdSnO·3HO (CSH) nanocubes modified with Ag/AgCl nanoparticles were constructed via the ultrasonic-assisted precipitation-photoreduction method. The obtained samples were characterized using various analytical techniques. Methyl orange (MO), tetracycline (TC), and oxytetracycline hydrochloride (OTC-HCl) were degraded as target pollutants under visible light irradiation to evaluate the photocatalytic activity of the as-prepared samples. Compared with pure CSH and Ag/AgCl nanoparticles, the developed composite of which 5mL of AgNO was added on the synthesis, labelled as 5-Ag/AgCl/CSH, occupied the best photocatalytic activity. The corresponding degradation rate for MO was 94% within 40min. 94% of TC and 90% of OTC-HCl were also degraded by 5-Ag/AgCl/CSH catalyst within 60min, respectively. The enhanced photocatalytic activity might arise from the surface plasmon resonance effect of Ag/AgCl nanoparticles and efficient separation of photogenerated electron-hole pairs. Meanwhile, a possible photocatalytic mechanism over 5-Ag/AgCl/CSH sample was proposed based on the experiment and theoretical analysis.

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Source
http://dx.doi.org/10.1016/j.jcis.2017.05.108DOI Listing

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