Self-assembled aggregates of SnO2/Bi2O3 heterojunction for electrochemical H2O2 detection

IF 7.4 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of Environmental Chemical Engineering Pub Date : 2025-03-19 DOI:10.1016/j.jece.2025.116260

Nwaokoma Chigozie Junior , Yuxuan Du , Yating Wang , Guisheng Zhao , Jiuyu Li , Aqsa Riaz , Jianping Du

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引用次数: 0

Abstract

A novel electrochemical sensor was created for the rapid and effective detection of hydrogen peroxide, employing a SnO₂/Bi₂O₃-modified electrode. SnO₂/Bi₂O₃ with heterostructure was prepared using a simple hydrothermal approach, followed by the comprehensive characterization of structure, morphology and properties. Optimal SnO₂/Bi₂O₃ material exposed (101) crystal planes of SnO₂ and (-122) crystal planes of Bi₂O₃. The sensor's performance for detecting hydrogen peroxide was evaluated, revealing a significant sensing capability, with a high sensitivity of 318.45 μA mM⁻¹cm⁻² and a low detection limit (LOD) of 0.29 μM, and as-prepared SnO₂/Bi₂O₃ is far superior to some reported materials. Additionally, the sensor's response to H₂O₂ was examined in the presence of different potential interfering species. The findings confirm that the designed sensor exhibits high selectivity, reproducibility and stability for the detection of H₂O₂, and notably SnO₂/Bi₂O₃ was used to construct chip paper electrodes, and achieve portable and highly-sensitive detection of H₂O₂. These findings highlight the potential of the as-synthesized SnO₂/Bi₂O₃ as a promising material for hydrogen peroxide detection in the environment and health fields.

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SnO2/Bi2O3异质结自组装聚集体电化学检测H2O2

利用 SnO2/Bi2O3 改性电极创建了一种新型电化学传感器，用于快速有效地检测过氧化氢。采用简单的水热法制备了具有异质结构的 SnO2/Bi2O3，随后对其结构、形态和性能进行了全面表征。最佳的 SnO2/Bi2O3 材料露出了 SnO2 的（101）晶面和 Bi2O3 的（-122）晶面。对传感器检测过氧化氢的性能进行了评估，结果表明该传感器具有显著的传感能力，灵敏度高达 318.45 μA mM-1cm-2，检出限（LOD）低至 0.29 μM，制备的 SnO2/Bi2O3 远远优于一些已报道的材料。此外，还考察了传感器在不同潜在干扰物存在时对 H2O2 的响应。研究结果证实，所设计的传感器在检测 H2O2 方面具有高选择性、可重复性和稳定性，特别是利用 SnO2/Bi2O3 构建芯片纸电极，实现了对 H2O2 的便携式高灵敏度检测。这些研究结果凸显了新合成的 SnO2/Bi2O3 作为过氧化氢检测材料在环境和健康领域的应用潜力。

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来源期刊

Journal of Environmental Chemical Engineering Environmental Science-Pollution

CiteScore

11.40

自引率

6.50%

发文量

2017

审稿时长

27 days

期刊介绍： The Journal of Environmental Chemical Engineering (JECE) serves as a platform for the dissemination of original and innovative research focusing on the advancement of environmentally-friendly, sustainable technologies. JECE emphasizes the transition towards a carbon-neutral circular economy and a self-sufficient bio-based economy. Topics covered include soil, water, wastewater, and air decontamination; pollution monitoring, prevention, and control; advanced analytics, sensors, impact and risk assessment methodologies in environmental chemical engineering; resource recovery (water, nutrients, materials, energy); industrial ecology; valorization of waste streams; waste management (including e-waste); climate-water-energy-food nexus; novel materials for environmental, chemical, and energy applications; sustainability and environmental safety; water digitalization, water data science, and machine learning; process integration and intensification; recent developments in green chemistry for synthesis, catalysis, and energy; and original research on contaminants of emerging concern, persistent chemicals, and priority substances, including microplastics, nanoplastics, nanomaterials, micropollutants, antimicrobial resistance genes, and emerging pathogens (viruses, bacteria, parasites) of environmental significance.