Enhanced rGO/ZnO/Chitosan Nanozyme Photocatalytic Technology for Efficient Degradation of Diazinon Pesticide Contaminated Water

IF 3 4区工程技术 Q3 CHEMISTRY, PHYSICAL

Adsorption Pub Date : 2024-12-16 DOI:10.1007/s10450-024-00582-4

Fitri Handayani Hamid, Fathur Rizqa Rasyid, Mashuni Mashuni, La Ode Ahmad, M. Jahiding

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Abstract

The increasing presence of pesticide contaminants in water bodies poses significant environmental and health challenges. This study introduces a novel enzyme-based photocatalytic technology composed of reduced graphene oxide (rGO), zinc oxide (ZnO), and chitosan (CS) designed to enhance the degradation efficiency of diazinon pesticides in polluted water. The nanozymes were characterized by XRD, SEM-EDX, and FTIR to ensure homogeneous structure and distribution of the materials, and the adsorbed pesticide content was measured using a UV-Vis spectrophotometer. Adsorption studies showed that the diazinon removal efficiency increased with higher pH, longer contact time, and initial concentration, reaching maximum adsorption efficiency at neutral pH. Isotherm analysis showed that diazinon adsorption on rGO/ZnO/CS nanozymes followed the Freundlich model, exhibiting heterogeneous adsorption characteristics with moderate adsorption capacity. These findings highlight the potential of rGO/ZnO/CS nanozymes as effective adsorbents for removing diazinon pesticides from contaminated water, offering promising applications in environmental remediation.

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增强型 rGO/ZnO/Chitosan 纳米酶光催化技术用于高效降解受重氮农农药污染的水体

水体中农药污染物的日益增多给环境和健康带来了重大挑战。本研究介绍了一种由还原氧化石墨烯（rGO）、氧化锌（ZnO）和壳聚糖（CS）组成的新型酶基光催化技术，旨在提高受污染水体中二嗪农农药的降解效率。通过 XRD、SEM-EDX 和 FTIR 对纳米酶进行了表征，以确保材料的结构和分布均匀，并使用紫外可见分光光度计测量了吸附的农药含量。吸附研究表明，随着 pH 值的升高、接触时间的延长和初始浓度的增加，二嗪农的去除率也随之升高，在中性 pH 值时达到最大吸附效率。等温线分析表明，rGO/ZnO/CS 纳米吸附剂对二嗪农的吸附遵循 Freundlich 模型，表现出异质吸附特性，吸附容量适中。这些发现凸显了 rGO/ZnO/CS 纳米酶作为有效吸附剂去除受污染水体中二嗪农农药的潜力，在环境修复方面具有广阔的应用前景。

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来源期刊

Adsorption 工程技术-工程：化工

CiteScore

8.10

自引率

3.00%

发文量

审稿时长

2.4 months

期刊介绍： The journal Adsorption provides authoritative information on adsorption and allied fields to scientists, engineers, and technologists throughout the world. The information takes the form of peer-reviewed articles, R&D notes, topical review papers, tutorial papers, book reviews, meeting announcements, and news. Coverage includes fundamental and practical aspects of adsorption: mathematics, thermodynamics, chemistry, and physics, as well as processes, applications, models engineering, and equipment design. Among the topics are Adsorbents: new materials, new synthesis techniques, characterization of structure and properties, and applications; Equilibria: novel theories or semi-empirical models, experimental data, and new measurement methods; Kinetics: new models, experimental data, and measurement methods. Processes: chemical, biochemical, environmental, and other applications, purification or bulk separation, fixed bed or moving bed systems, simulations, experiments, and design procedures.