In this paper Se NPs have been synthesised through precipitation technique by using different sorts of solvents such as sodium hydroxide, tin chloride, sodium borohydride, hydrochloric acid and citrus acid so as to consider its antibacterial activities. These Se NPs are characterised by experimental techniques such as UV-Vis spectrophotometer, SEM, TEM, FT-IR, XRD, EDX and antibacterial activities. Powder XRD analysis reveals the hexagonal phase (HCP) of Se NPs with average particle size of 27 nm. SEM and TEM reveal agglomerated spherical images with spherical shape and EDX spectra of the pure Se NPs show the peaks of pure selenium. Maximum absorption occurs in the range of 200–400 nm with an energy band gap of 3.58 eV. Presence of different functional groups liable for the production and stability of the Se NPs was confirmed by FT-IR spectrum. The antibacterial activity was achieved against two Gram-negative microorganisms (Escherichia coli, Salmonella typhi) and two Gra...

中文翻译：

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沉淀法合成硒纳米颗粒的结构，光学，抗菌分析

本文通过沉淀技术，使用氢氧化钠，氯化锡，硼氢化钠，盐酸和柑桔酸等不同种类的溶剂，通过沉淀技术合成了硒纳米颗粒，以考虑其抗菌活性。这些Se NP的特征在于实验技术，例如紫外可见分光光度计，SEM，TEM，FT-IR，XRD，EDX和抗菌活性。粉末XRD分析揭示了Se NP的六方相（HCP），平均粒径为27 nm。SEM和TEM显示球形的团聚球形图像，并且纯Se NP的EDX光谱显示了纯硒的峰。最大吸收发生在200–400 nm范围内，能带隙为3.58 eV。FT-IR光谱证实了对Se NPs的产生和稳定性负责的不同官能团的存在。