PREPARATION OF FLOWER-LIKE HIERARCHICAL STRUCTURE SnO2/g-C3N4 AND ITS ETHANOL GAS-SENSITIVE PROPERTIES

被引：2

作者：

Li, Xiao-Dong ^{[1
]}

Pang, Jia-Wen ^{[1
]}

机构：

[1] Jilin Jianzhu Univ, Dept Basic Sci, 5088 Xincheng St, Changchun 130118, Jilin, Peoples R China

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA | 2025年 / 39卷 / 01期

关键词：

Hierarchical structure; Gas sensing property; SnO2/g-C3N4; SENSING PROPERTIES; NANOSHEETS; NANORODS;

D O I：

10.4314/bcse.v39i1.12

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The flower-like hierarchical structured SnO2/g-C3N4 nanocomposites were successfully prepared by one-step hydrothermal method with high-temperature calcination. The structure and morphology of the synthesized samples were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM) and N2 adsorption-desorption. The gas-sensitive performance of the pure SnO2 and SnO2/g-C3N4 sensors were investigated and compared towards ethanol gas. The results showed that the response of the SnO2/g-C3N4 composites to 100 ppm ethanol gas at 200 degrees C was 18.88, which was 2.09 times that of pure SnO2, with response and recovery time of 2 s and 13 s. In addition, the gas sensor has excellent selectivity for ethanol gas, good repeatability, and long-term stability. These gas-sensitive properties of the flower-like graded structure SnO2/g-C3N4 to ethanol gas are attributed to the materials which have unique graded structure and n-n heterojunction.

引用

页码：141 / 152

页数：12

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