环境修复用无机纳米发光团的合成与表征

4open Pub Date : 2022-01-01 DOI:10.1051/fopen/2022021
Abdul Aziz Shaikh, Souhardya Bera, Swastik Paul, Shibsankar Mondal, Ankit Saha, Subhasish Roy
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引用次数: 1

摘要

无机纳米粒子发光团由于其特殊的特性而成为当前研究的焦点。此外,与散装零价金属相比,它们的应用仍然高度多样化。在模拟光照条件下,采用简便经济的氯化铁硼氢化物还原法研究苯酚的光降解动力学。进一步进行了光致发光研究,计算了合成样品的最低能量跃迁。用XRD对合成的NPs进行了分析。SEM和TEM数据表明,在20 ~ 60 nm的颗粒范围内,形成了一个相互连接的、形态均匀的纳米球网络,并形成了长链聚集物,这是混合价铁氧化物的特征,在快速氧化的nZVI颗粒体系中占主导地位。光降解研究显示了一个有希望的结果,在24小时内降解了几乎全部浓度的苯酚。PL研究报告了最低的能量转换为1.72 eV,这也证实了它作为光催化剂在废水修复的各个领域中的应用。
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Synthesis and characterization of Inorganic Nanoparticles Luminophores for Environmental Remediation
Inorganic Nanoparticle Luminophores have been the focus of ongoing research because of their special characteristics as they approach nanoscale from bulk nature. Besides, their application remains highly diverse compared to bulk zero-valent metals. In this research work, facile and economical borohydride reduction of ferric chloride was undertaken to study the kinetics of phenol photodegradation under simulated sunlight conditions. Further, photoluminescence study was undertaken to calculate the lowest energy transition of our synthesized sample. The synthesized NPs were analyzed using XRD. SEM and TEM data showed the presence of an interconnected network of nanospheresof uniform morphology in the particle range of 20–60 nm, with formation of long-chain of aggregates-characteristic of mixed valent iron oxides, which predominates on a rapidly oxidizing nZVI particle system. The photodegradation studies showed a promising result, degrading nearly the complete concentration of phenol within 24 hours. PL study reported the lowest energy transition at 1.72 eV which alternatively confirms its application as a photocatalyst in diverse fields of wastewater remediation.
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