Facile synthesis of Ag NPs@ MIL-100(Fe)/ guar gum hybrid hydrogel as a versatile photocatalyst for wastewater remediation: Photocatalytic degradation, water/oil separation and bacterial inactivation

Chao Duan; Chaoran Liu; Xin Meng; Kun Gao; Wanli Lu; Yanling Zhang; Lei Dai; Wei Zhao; Chuanyin Xiong; Wenliang Wang; Yishan Liu; Yonghao Ni

doi:10.1016/j.carbpol.2019.115642

Facile synthesis of Ag NPs@ MIL-100(Fe)/ guar gum hybrid hydrogel as a versatile photocatalyst for wastewater remediation: Photocatalytic degradation, water/oil separation and bacterial inactivation

Carbohydr Polym. 2020 Feb 15:230:115642. doi: 10.1016/j.carbpol.2019.115642. Epub 2019 Nov 19.

Authors

Chao Duan¹, Chaoran Liu², Xin Meng², Kun Gao², Wanli Lu², Yanling Zhang², Lei Dai³, Wei Zhao², Chuanyin Xiong², Wenliang Wang², Yishan Liu⁴, Yonghao Ni⁵

Affiliations

¹ College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi'an, 710021, China. Electronic address: duanchaonba@126.com.
² College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi'an, 710021, China.
³ College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi'an, 710021, China. Electronic address: dailei_ju@hotmail.com.
⁴ Sichuan Technology and Business College, Dujiangyan, Sichuan Province, 611830, China.
⁵ College of Bioresources Chemical and Materials Engineering, Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science and Technology, Xi'an, 710021, China; Limerick Pulp and Paper Centre, University of New Brunswick, Fredericton, New Brunswick, E3B 5A3, Canada.

PMID: 31887970
DOI: 10.1016/j.carbpol.2019.115642

Abstract

3D Hydrogel is one of the most popular adsorbents for water remediation due to its excellent concentration/ adsorption capacity. However, it remains a challenge to use the hydrogel alone for treating complex wastewater. In this work, we designed and fabricated a versatile bio-based hybrid hydrogel consisting of Ag NPs@ MIL-100(Fe) photocatalysts and guar gum (GG) via facile blending and self-crosslinking. The hybrid hydrogel integrated with multifunctions of dye adsorption and degradation, oil/water separation and antibacterial properties, thus enabling its applications in complex wastewater remediation process. The presence of Ag nanoparticles (Ag NPs) not only enhanced the photocatalytic activity of MIL-100(Fe), but also imparted the antibacterial activity of Ag NPs@MIL-100(Fe)/ GG hydrogel. Particularly, the bio-based GG hydrogel scaffold showed excellent injectable, remodeling, and self-healing properties, which enabled an effective oil/water separation ability (silicone oil, cyclohexane and canola oil) and facilitated the recyclability/sustainability of the nano-photocatalyst powders. This novel multifunctional 3D hybrid hydrogel provides new opportunities for wastewater remediation purpose.

Keywords: 3D hybridhydrogel; Antibacterial; Multifunction; Photocatalyticdegradation; Wastewaterremediation; water/oil separation.