Abstract 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 infra-red (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 μg/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.

中文翻译：

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硒化铅半导体纳米粒子（PbSe NPs）的生物合成和表征及其抗氧化和光催化活性

摘要目前的研究通过简单的生物良性过程与木霉属物种制备了新型硒化铅纳米粒子 (PbSe NPs)。WL-Go。紫外可见光谱 (UV-vis)、透射电子显微镜 (TEM)、X 射线衍射 (XRD)、傅立叶转移红外 (FTIR) 光谱分析、拉曼光谱和光致发光 (PL) 用于表征理化性质制造的NPs。在 pH 8 下用 0.5 g WL-Go 菌株生物量和 (1:1) mM SeO2: Pb(NO3)2 合成是实现 10-30 nm 立方面中心纳米颗粒的最佳合成条件。PbSe NPs 作为催化剂用于研究使用 2,2-diphenyl-1-picrylhydrazyl (DPPH) 的抗氧化活性和罗丹明 B 染料 (10 mg/L) 的光降解能力。结果表明，NPs 最多可消除 88 个。添加 600 μg/mL NPs 后，60% 的自由基可以在 30 分钟内光降解 82% 的罗丹明 B。因此，这项研究为未来使用环境友好的生物催化 PbSe NPs 以有效消除自由基和处理废水中的持久性有机污染物提供了新的知识和策略。