| China is a major agricultural country, producing billions of tons of biomass waste every year. Common incineration, landfilling, or returning farmland can produce greenhouse gases such as methane and carbon dioxide, which is not conducive to achieving the goals of carbon peaking and carbon neutrality. The preparation of biomass waste into biomass carbon materials is not only economically and efficiently feasible, but also effectively prevents the carbon in biomass from returning to the atmospheric environment in the form of greenhouse gases. This study prepared various morphologies of biochar materials from bamboo, cotton stalks, corn stalks, etc. in a simple, efficient, and controllable manner, and then developed gas sensors to monitor indoor and outdoor air quality and meat freshness. This study systematically investigated the physicochemical properties and gas sensing performance of biochar semiconductor materials, which not only provides useful references for the low-carbon and high-value utilization of biomass waste, but also has the potential to be applied in air pollution monitoring and high-quality livestock product quality monitoring. |
