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论文类型：期刊论文

发表时间：2021-01-10

发表刊物：ARABIAN JOURNAL OF CHEMISTRY

卷号：13

期号：11

页面范围：8411-8423

ISSN号：1878-5352

关键字：Lead selenide nanoparticles; Trichoderma sp. WL-Go; Antioxidant activity; Photocatalyst; Rhodamine B

摘要：The current study fabricated novel lead selenide nanoparticles (PbSe NPs) by a simple biological benign process with Trichoderma sp. WL-Go. Ultraviolet-visible spectroscopy (UV-vis), Transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transfer infrared (FTIR) spectroscopic analysis, Raman spectroscopy and Photoluminescence (PL) were used to characterize the physicochemical properties of the fabricated NPs. Synthesis at pH 8 with 0.5 g biomass of strain WL-Go and (1:1) mM of SeO2: Pb(NO3)(2) were the optimal synthesis conditions to achieving 10-30 nm cubic faced centered NPs. The PbSe NPs served as catalyst for investigating the antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH) and photodegradation ability of rhodamine B dye (10 mg/L). The results indicated that the NPs could eliminate up to 88.60% of free radicals after adding 600 g/mL NPs and could photodegrade 82% of rhodamine B in 30 min. Thus, this study provides new knowledge and strategies for the future use of an environmentally benign bio- catalytic PbSe NPs to efficiently eliminate free radicals and in treatment of persistent organic pollutants in wastewaters. (C) 2020 Published by Elsevier B.V. on behalf of King Saud University.