NiO/Cu2S/rGO异质结光催化剂的精深工程:制造、染料降解和环境修复的机理途径

IF 3.5 Q3 ENGINEERING, ENVIRONMENTAL
Balaji Parasuraman, Paramasivam Shanmugam, Sambasivam Sangaraju, Hariprasath Rangaraju, Dhayal Raj Alphonse, Mohammed Nawaz Husain and Pazhanivel Thangavelu
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引用次数: 0

摘要

当代时装业使用大量染料,混合染料的广泛使用、毒性、致癌性和生物蓄积性已引起全球关注。因此,研究人员和科学家专注于使用广谱光催化剂来实现染料修复的最高效率。在此,我们报告了通过一步水热法合成的新型 NiO/Cu2S/rGO 三元纳米复合材料。我们采用不同的分析技术对合成样品进行了分析,如 XRD、FTIR、UV-DRS、SEM、EDX、元素图谱和 HRTEM 分析。结果证实,NiO 和 Cu2S 纳米粒子装饰在二维-rGO 纳米片上。在紫外光照射下,一种界面三元异质结构被成功地用于混合染料污染物的光催化环境修复。这些异质结构之所以具有显著的光催化性能,有几个关键因素,包括采集光的光谱范围广、电荷分离好和电荷传输快。优化的 NiO/Cu2S/rGO 三元纳米复合材料对 RhB、MB 和混合(RhB 和 MB)染料的降解效率最高,分别达到 92.4%、97.9% 和 91.6%。与此同时,还研究了光催化机理的初步路径、清除剂实验、可回收性和稳定性。结果表明,在紫外光照射下,(*O2-)和*OH 自由基物种发挥了主要作用。NiO/Cu2S/rGO三元纳米复合材料具有有效降解工业废水中的有机染料和修复环境的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Proficient Engineering of NiO/Cu2S/rGO heterojunction photocatalysts: fabrication, dye degradation, and mechanism pathways towards environmental remediation

Proficient Engineering of NiO/Cu2S/rGO heterojunction photocatalysts: fabrication, dye degradation, and mechanism pathways towards environmental remediation

Proficient Engineering of NiO/Cu2S/rGO heterojunction photocatalysts: fabrication, dye degradation, and mechanism pathways towards environmental remediation

Contemporary fashion industry uses numerous dyes and global attention has been drawn to the widespread use, toxicity, carcinogenicity, and bioaccumulation of mixed dyes. Therefore, researchers and scientists are focused on using broad spectrum of photocatalysts to achieve dye remediation with maximum efficiency. Herein, we report the fabrication of novel NiO/Cu2S/rGO ternary nanocomposites synthesized via the one-step hydrothermal method. The as-synthesized sample was analyzed by applying different analytical techniques, such as XRD, FTIR, UV-DRS, SEM, EDX, elemental mapping, and HRTEM analyses. The results confirmed that the NiO and Cu2S nanoparticles are decorated on the 2D-rGO nanosheets. An interfacial ternary heterostructure was successfully utilized for the photocatalytic environmental remediation of mixed dye pollutants under UV-light irradiation. Several key factors contribute to the remarkable photocatalytic performance of these heterostructures, including the wide spectrum of the harvested light, good charge separation, and rapid charge transport. The optimized NiO/Cu2S/rGO ternary nanocomposites exhibited the highest degradation efficiency of 92.4%, 97.9% and 91.6% for RhB, MB and mixed (RhB and MB) dyes, respectively. In contrast, the tentative photocatalytic mechanism pathway, scavengers experiments, recyclability and stability were also investigated. The results reveal that (*O2) and *OH radical species play a major role under UV-light irradiation. The NiO/Cu2S/rGO ternary nanocomposites have potential for the effective degradation of organic dyes in industrial wastewater and environmental remediation.

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