基于氮化石墨碳的高效纳米复合材料:一种用于减损废水中四环素和 As3+ 的低成本、令人目瞪口呆的光催化剂

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Kabir Hussain Badagoppam Haroon, Varsha UshaVipinachandran, Santanu Bera, Vijay Sithaiyan and Susanta Kumar Bhunia
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引用次数: 0

摘要

由于工业化的迅速发展和人口的大量增长,纯净水的匮乏已成为一个令人严重关切的问题。我们在日常生活中频繁使用无色污染物,导致其在水体中积累,并在不知情的情况下饮用后造成不良影响。因此,从废水中去除这类污染物变得至关重要。我们报告了一种由氮化石墨碳(CN)上的银(Ag)纳米颗粒组成的纳米复合材料,并将其用于可见光诱导的光催化去除四环素(TC)和 As3+ 以及油水分离。采用简单的煅烧、酸蚀和原位化学还原方法制备了二元纳米复合材料,即 AgECN。所制备的纳米结构在短时间内对 TC 降解和 As3+ 氧化显示出巨大的潜力。据观察,使用 AgECN-3 % 纳米复合材料后,92 % 的 TC 和 99 % 的 As3+ 在 90 分钟内被降解。此外,它还具有更好的油水分离效率。自由基清除研究表明,超氧自由基 (O2.-) 和光生空穴 (h+) 都参与了 TC 降解和 As3+ 氧化。纳米复合材料中单个成分的协同效应表现出了出色的光生电荷载流子分离效果,与单个成分相比,具有显著的光催化活性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A graphitic carbon nitride-based efficient nanocomposite: low cost and stupefying photocatalyst for the degradation of tetracycline and As3+ in wastewater†

A graphitic carbon nitride-based efficient nanocomposite: low cost and stupefying photocatalyst for the degradation of tetracycline and As3+ in wastewater†

The paucity of pure water has become a serious concern due to the rapid increase of industrialization and massive population growth. The frequent usage of colorless pollutants in our daily lives leads to an accumulation in water bodies and causes adverse effects when consumed unknowingly. Therefore, it becomes crucial to remove these kinds of pollutants from wastewater. We report a nanocomposite comprising silver (Ag) nanoparticles decorated on graphitic carbon nitride (CN) and employed for visible light-induced photocatalytic removal of tetracycline (TC) and As3+ as well as oil–water separation. A simple calcination, acid-etching followed by in situ chemical reduction method was used to fabricate the binary nanocomposite, namely AgECN. The resulting nanostructure showed tremendous potential towards TC degradation and As3+ oxidation in a short period of time. It was observed that 92% of TC and 99% of As3+ became degraded within 90 minutes using AgECN-3% nanocomposite. In addition, it showed better oil–water separation efficiency. A radical scavenging study demonstrated the involvement of superoxide radical (O2˙) and photogenerated holes (h+) towards TC degradation and As3+ oxidation. The synergistic effect of individual components in the nanocomposite exhibited outstanding separation of photogenerated charge carriers proceeding with remarkable photocatalytic activity compared to the individual components alone.

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CiteScore
7.20
自引率
4.30%
发文量
567
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