Synthesis of silver phosphate/graphene oxide aerogel and its high visible light photocatalytic elimination of formaldehyde. Issue 2 (April 2022)

• Record Type: Journal Article
• Authors: Zhang, Xinyi; Liu, Bingrui; Yang, Ying; Liu, Weibao; Hou, Zongdong; Shang, Jiangwei; Cheng, Xiuwen
• Is Part Of: Journal of environmental chemical engineering. Volume 10:Issue 2(2022)
• Publication Date: 2022-04
• Subjects: Ag3PO4/GO -- Aerogel -- Visible light -- Formaldehyde -- Photocatalysis; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2022.107171
• Languages: English
• ISSNs: 2213-2929

Abstract

Abstract: For efficient degradation of volatile organic compounds (VOCs) in the air, promising and environmentally friendly technologies are being explored. Here, a silver phosphate/graphene oxide (Ag3 PO4 /GO) aerogel was synthesized by ultrasonic precipitation combined with freeze drying strategy. Afterwards, physicochemical properties of the as-obtained Ag3 PO4 /GO aerogel sample were investigated by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, ultraviolet-visible diffuse reflectance spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy. Results showed that spherical Ag3 PO4 with an average diameter of 150 nm uniformly combined with GO to form an aerogel structure. Moreover, by integrating with GO, the utilization rate, visible light absorption, and pollutant degradation efficiency of Ag3 PO4 could be significantly improved. Furthermore, Ag3 PO4 /GO aerogel was used to degrade VOC (formaldehyde in this case), which was found to be degraded from 3.012 mg/m 3 to 0.419 mg/m 3 under a 180-minute Xenon lamp. Thus, the mechanism of enhanced visible light photocatalytic (PC) degradation of formaldehyde by Ag3 PO4 /GO aerogel was proposed and discussed. Finally, it provided a reference for the development prospects of environmentally friendly new materials to treat gaseous pollutants in the air. Graphical Abstract: ga1 Highlights: Ag3 PO4 /GO aerogel was synthesized for formaldehyde degradation. Ag3 PO4 /GO aerogel exhibited high photoresponsive activity. The enhanced visible activity of Ag3 PO4 /GO aerogel was proposed.