Preparation of TiO2/cellulose nanocomposites as antibacterial bio-adsorbents for effective phosphate removal from aqueous medium

Zong, Enmin and Wang, Chen and Yang, Jiayao and Zhu, Hangxuan and Jiang, Shengtao and Liu, Xiaohuan and Song, Pingan ORCID: https://orcid.org/0000-0003-1082-652X (2021) Preparation of TiO2/cellulose nanocomposites as antibacterial bio-adsorbents for effective phosphate removal from aqueous medium. International Journal of Biological Macromolecules, 182. pp. 434-444. ISSN 0141-8130


Abstract

The design of environmentally benign bio-adsorbents for the removal of phosphate from aqueous medium was an economic and effective way for controlling eutrophication. Herein, we prepared three kinds of TiO2/cellulose (CE-Ti) nanocomposites by a facile hydrolysis-precipitation method, and used them as antibacterial bio-adsorbents for the removal of phosphate from aqueous medium. Multiple techniques including Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and thermogravimetric analysis (TGA) were employed to characterize the nanostructure and characteristics of the prepared CE-Ti nanocomposite. The adsorption capacity of the CE-Ti was 19.57 mg P g−1 according to the Langmuir model, which was 6 times higher than that of CE. Importantly, the bacterial inhibition zone of the CE-Ti was 2.88 mm (that of CE was 0 mm), indicating that CE-Ti had good antibacterial activity that could reduce the attachment of the microorganism to the surface of CE-Ti, which was suitable for long-term phosphate removal. Moreover, the CE-Ti had good adsorption selectivity and anti-interference capability, according to interfering ions and ion strength experiments. Furthermore, Ti4+ leakage tests suggested that CE-Ti was highly stable under acidic, neutral and alkali conditions. These results indicated that the CE-Ti nanocomposite could be utilized as a promising antibacterial bio-adsorbent for effective phosphate removal from aqueous medium.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 29 Nov 2021 01:41
Last Modified: 01 Dec 2021 01:59
Uncontrolled Keywords: Cellulose; Titanium oxides; Nanocomposite; Antibacterial bio-adsorbent; Phosphate removal
Fields of Research (2008): 03 Chemical Sciences > 0302 Inorganic Chemistry > 030207 Transition Metal Chemistry
05 Environmental Sciences > 0502 Environmental Science and Management > 050205 Environmental Management
Fields of Research (2020): 34 CHEMICAL SCIENCES > 3402 Inorganic chemistry > 340204 Inorganic green chemistry
40 ENGINEERING > 4011 Environmental engineering > 401106 Waste management, reduction, reuse and recycling
40 ENGINEERING > 4011 Environmental engineering > 401199 Environmental engineering not elsewhere classified
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
E Expanding Knowledge > 97 Expanding Knowledge > 970105 Expanding Knowledge in the Environmental Sciences
Socio-Economic Objectives (2020): 24 MANUFACTURING > 2406 Environmentally sustainable manufacturing activities > 240699 Environmentally sustainable manufacturing activities not elsewhere classified
28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
Identification Number or DOI: https://doi.org/10.1016/j.ijbiomac.2021.04.007
URI: http://eprints.usq.edu.au/id/eprint/44062

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