Highly effective and stable MWCNT/WO_3 nanocatalyst for ammonia gas sensing, photodegradation of ciprofloxacin and peroxidase mimic activity

Jeevitha G.; Sivaselvam S.; Keerthana S.Mangalaraj D.Ponpandian N.

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Highly effective and stable MWCNT/WO_3 nanocatalyst for ammonia gas sensing, photodegradation of ciprofloxacin and peroxidase mimic activity

机译：Highly effective and stable MWCNT/WO_3 nanocatalyst for ammonia gas sensing, photodegradation of ciprofloxacin and peroxidase mimic activity

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The present study discusses the ammonia (NH3) sensing characteristics, photocatalytic degradation of emerging pollutants, and peroxidase mimic activity of multifunctional multi-walled carbon nanotube-tungsten oxide nanocomposite (MWCNT/WO3) prepared by conventional solvothermal method. The prepared MWCNT/WO(3 )nanocomposites were characterized by various analytical techniques like XRD, Raman, XPS, N-2 adsorption, FESEM with elemental analysis and diffuse reflection spectroscopy. The prepared 1 MWCNT/WO3 nano composite showed better gas sensing performance for the NH3 vapors at 10-100 ppm than the pristine WO3 and the response and recover time of about 13 and 15s towards 20 ppm of ammonia (NH3) was achieved. The photocatalytic activity of MWCNT/WO3 towards organic dyes such as Rhodamine-B (Rh.B) methylene blue (MB) and pharmaceutical compound ciprofloxacin (CIP) were studied and achieved above 90 degradation at 160 min for CIP and 60 min for MB and Rho-B respectively. The radicle scavenging activity for MWCNT/WO3 nanocomposite showed the predominant formation of hydroxyl (OH?) and superoxide radicle ((?) nbsp;O2-). Further, the MWCNT/WO3 nanocomposite showed peroxidase mimic activity and exhibit the limit of detection (LOD) of about 321 nM. From the overall analysis, MWCNT/WO3 hybrid seems to have potential characteristics that can be explored for multiple functional applications.

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来源
《Chemosphere》 |2022年第6期|134023.1-134023.15|共15页
作者
Jeevitha G.; Sivaselvam S.; Keerthana S.Mangalaraj D.Ponpandian N.;
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Bharathiar Univ, Dept Nanosci & Technol, Coimbatore 641046, Tamil Nadu, India;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
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正文语种英语
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MWCNT/WO3 nanocomposite; Solvothermal; Ciprofloxacin degradation; Ammonia sensor; Peroxidase mimic activity;

Highly effective and stable MWCNT/WO_3 nanocatalyst for ammonia gas sensing, photodegradation of ciprofloxacin and peroxidase mimic activity

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