Facile synthesis of porous SnO2@CuO nanosheets with highly sensitive performance of VOCs

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Research Bulletin Pub Date : 2025-05-01 Epub Date: 2025-01-13 DOI:10.1016/j.materresbull.2025.113313

Haibo Ren , Jie Wan , Hui Pan , Jiarui Huang

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Abstract

Porous SnO₂/CuO nanosheets were prepared using a one-pot hydrothermal method. The samples were characterized using various analytical techniques. Additionally, porous SnO₂ microflowers composed of uniform nanosheets were also produced. The specific surface areas (SSAs) of the porous SnO₂/CuO nanosheets microcubes and the porous SnO₂ microflowers were measured at 68.21 m² g⁻¹ and 11.91 m² g⁻¹, respectively. The porous SnO₂/CuO nanosheets sensor displayed the superior sensing properties for isopropanol among the ten gases tested, achieving a maximum response of 51.76 towards 100 ppm isopropanol at an optimal working temperature. The response and recovery times for the SnO₂/CuO sensor were recorded at 10 s and 14 s, respectively. Furthermore, the porous SnO₂/CuO nanosheets sensor demonstrated excellent stability and repeatability over 28-day cycles, along with a low detection limit of 29 ppb. The combined benefits of the porous structure, larger SSA, and abundant p-n heterojunctions contributed to the enhanced sensing performance.

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具有高挥发性有机化合物敏感性能的SnO2@CuO多孔纳米片的简易合成

采用一锅水热法制备了多孔SnO2/CuO纳米片。用各种分析技术对样品进行了表征。此外，还制备了由均匀纳米片组成的多孔SnO2微花。测得多孔SnO2/CuO纳米片微立方体和多孔SnO2微花的比表面积分别为68.21 m2 g−1和11.91 m2 g−1。在所测试的10种气体中，SnO2/CuO纳米片传感器对异丙醇表现出优异的传感性能，在最佳工作温度下，对100 ppm异丙醇的最大响应为51.76。SnO2/CuO传感器的响应时间和恢复时间分别为10 s和14 s。此外，多孔SnO2/CuO纳米片传感器在28天的周期内表现出出色的稳定性和可重复性，并且检测限低至29 ppb。多孔结构、更大的SSA和丰富的p-n异质结的综合优势有助于增强传感性能。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.