Construction of heterostructured g-C3N4/ZnO/cellulose and its antibacterial activity: experimental and theoretical investigations. Issue 12 (13th November 2019)

• Record Type: Journal Article
• Authors: Zhao, Si-Wei; Zheng, Ming; Sun, Hui-Liang; Li, Shu-Jun; Pan, Qing-Jiang; Guo, Yuan-Ru
• Is Part Of: Dalton transactions. Volume 49:Issue 12(2020)
• Page Start: 3723
• Page End: 3734
• Publication Date: 2019-11-13
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c9dt03757h
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : A ternary composite is fabricated via a facile method. The chemically interfacial coupling is revealed, which improves the spatial separation efficiency of photogenerated carriers and leads to superior good antibacterial activity. Abstract : A g-C3 N4 /ZnO/cellulose ternary composite (labeled as CNZCel) with an ordered structure and excellent antibacterial properties has been successfully synthesized via a facile method. Its morphology, microstructure and components have been analyzed by using XRD, SEM, TEM and EDS, and the results corroborate the co-existence of three components in the ternary composite. It is revealed that ZnO particles are connected to the layered g-C3 N4 and simultaneously attached to the cellulose substrate. This microstructural feature is also borne out by the relativistic density functional study of a finite g-C3 N4 –ZnO–cellulose cluster. Both experimental and theoretical results unravel that the interfacial bonding interactions in the ternary composite improve electron transfer among components and enable high-efficiency spatial separation of photogenerated electrons and holes. Consequently, good antibacterial performance of the composite has been found in tests. This study provides the prospect of preparing low-cost and environment-friendly food packaging materials, which are also endowed with excellent antibacterial activity.