Sensitive Xylene solid-state gas sensor based graphene foam decorated with cobalt oxide has been successfully fabricated via a simple impregnation method. The structure and surface morphological analysis carried out using multiple techniques including XRD, SEM, Raman, TGA, BET, and BJH. The morphological examination using SEM confirmed that spherical CO₃O₄ particles fully covered both the outer surface and interior pores of GF. Raman analysis confirmed that both characteristic bands for carbon nanomaterials are absent. The specific surface area was estimated using the BET method to be 543.254 m²/g which is a relatively high value. The prepared sensors showed a good response towards xylene. Moreover, we examine the sensitivity of the CO₃O₄/GF sensor to detect other volatile organic compounds, such as methanol, ethanol, toluene, and heptane, demonstrating that the CO₃O₄/GF sensor exhibits excellent sensitivity to xylene (detection limit = 0.5 ppm) at room temperature.

通过一种简单的浸渍方法，已经成功地制造了以氧化钴装饰的基于敏感的二甲苯固态气体传感器的石墨烯泡沫。使用多种技术进行结构和表面形态分析，包括XRD，SEM，拉曼，TGA，BET和BJH。使用SEM的形态学检查证实球形的CO ₃ O ₄颗粒完全覆盖了GF的外表面和内孔。拉曼分析证实了碳纳米材料的两个特征带都不存在。用BET法估算的比表面积为543.254平方米/克，这是一个相对较高的值。制备的传感器显示出对二甲苯的良好响应。此外，我们研究了CO ₃ O ₄的敏感性/ GF传感器可检测其他挥发性有机化合物，例如甲醇，乙醇，甲苯和庚烷，这表明CO ₃ O ₄ / GF传感器在室温下对二甲苯表现出出色的灵敏度（检测极限= 0.5 ppm）。