Dhiman, Pooja and Sharma, Jayati and Dawi, Elmuez A. and Kumar, Amit and Sharma, Gaurav and Lai, Chin Wei (2024) Integration of Bi2Ti2O7 and CaIn2S4 to Form a Z-Scheme Heterojunction with Enhanced Charge Transfer for Superior Photocatalytic Activity. Industrial & Engineering Chemistry Research, 63 (35). pp. 15415-15428. ISSN 0888-5885, DOI https://doi.org/10.1021/acs.iecr.4c01789.
Full text not available from this repository.Abstract
The use of an effective photocatalyst is critical for the photocatalytic degradation of pollutants in water using visible light, which is an essential prerequisite for wastewater treatment. In this work, the Z-scheme heterostructure photocatalyst of Bi2Ti2O7/CaIn2S4 (BTO-CIS) with high effectiveness for the degradation of crystal violet was successfully synthesized using a two-step process combining hydrothermal treatment and coprecipitation. The BTO/CIS heterojunction demonstrated a high photocatalytic efficacy of 98.58% in degrading CV after 15 min of visible light exposure. In comparison, BTO and CIS individually degraded CV by up to 62.01 and 75.80%, respectively, though over an extended duration of 50 min. The combination of BTO and CIS results in an increase in the separation of charges at the interface, which ultimately leads to an increase in the efficiency of the catalyst. Furthermore, ESR measurements and quenching studies have identified hydroxyl radicals (center dot OH) and superoxide radicals (center dot O-2(-)) as the main active species. Additionally, the BTO/CIS heterojunction exhibited significant degradation efficacy against ciprofloxacin and tetracycline. Furthermore, the synthesized Bi2Ti2O7/CaIn2S4 heterojunction demonstrated exceptional stability, which is advantageous for practical applications in wastewater treatment.
| Item Type: | Article |
|---|---|
| Funders: | Ajman University (2023-IRG-HBS-02) |
| Subjects: | Q Science > Q Science (General) T Technology > T Technology (General) T Technology > TP Chemical technology |
| Divisions: | Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 10 Feb 2025 08:05 |
| Last Modified: | 10 Feb 2025 08:05 |
| URI: | http://eprints.um.edu.my/id/eprint/47506 |
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