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- Title
Preparation of enhanced visible light-responsive photocatalytic paper containing Ag/N-TiO<sub>2</sub> aerogel for detoxification of environmental pollutants.
- Authors
Li, Jian; Ning, Yuping; Liu, Xiangyao; Ren, Xueshi; Liu, Wenbo
- Abstract
Ag/N-TiO2 aerogel photocatalyst (Ag/N-TiO2 ACP) was prepared by the sol–gel method, using AgNO3 and urea as the sources of silver and nitrogen, respectively. The surface of the photocatalyst was modified using an alcoholic solution of ethyl orthosilicate (20% v/v) during the drying process under atmospheric pressure. Ag/N-TiO2 ACP, microcrystalline cellulose (MCC) and polyvinyl butyral (PVB) were combined by electrostatic spinning to prepare Ag/N-TiO2 ACP/MCC composite fibers (Ag/N-TiO2/MCC-CFs). Ag/N-TiO2/MCC-CFs were then composited with pulp fibers to prepare a photocatalytic paper (Ag/N-TiO2/MCC CFs-paper) with a wide spectral response range. Ag/N-TiO2 ACP has a high specific surface area (288.92 m2/g) and good antibacterial activity (no obvious colony after 2 h under simulated sunlight). Scanning electron microscopy images showed Ag/N-TiO2/MCC-CFs anchored in the pulp fibers. The composite photocatalytic paper exhibited good antibacterial activity against Escherichia coli (> 97% growth inhibition under simulated sunlight for 2 h) and Staphylococcus aureus (> 91% growth inhibition under simulated sunlight for 2 h). The photocatalytic paper also showed good photocatalytic activity and stability for the degradation of liquid-phase organic pollutants (MB, adsorption-photocatalytic degradation ~ 100%) and volatile organic pollutants (HCHO, adsorption-photocatalytic degradation 57.19%) under light irradiation. This study provides a simple and green method for preparation of a novel paper-based material with effective antibacterial and photocatalytic activity that has potential for photocatalytic sewage purification and degradation of indoor air pollutants, such as HCHO.
- Subjects
POLLUTANTS; AIR purification; SEWAGE purification; AEROGELS; AIR pollutants; POLYVINYL butyral
- Publication
Cellulose, 2024, Vol 31, Issue 3, p1827
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-023-05669-9