Department of Environmental Sciences, Central University of Himachal Pradesh, Dharamshala, 176215, HP, India.
Department of Physics, MLSM College Sunder Nagar, Chaterokhri, Mandi, HP, India.
Chemosphere. 2024 Apr;354:141591. doi: 10.1016/j.chemosphere.2024.141591. Epub 2024 Mar 7.
The sustainable utilization of resources motivate us to create eco-friendly processes for synthesizing novel carbon nanomaterials from waste biomass by minimizing chemical usage and reducing energy demands. By keeping sustainability as a prime focus in the present work, we have made the effective management of Parthenium weeds by converting them into carbon-based nanomaterial through hydrothermal treatment followed by heating in a tube furnace under the nitrogen atmosphere. The XPS studies confirm the natural presence of nitrogen and oxygen-containing functional groups in the biomass-derived carbon. The nanostructure has adopted a layered two-dimensional structure, clearly indicated through HRTEM images. Further, the nanomaterials are analyzed for their ability towards the electrochemical detection of mercury, with a detection limit of 6.17 μM, while the limit of quantification and sensitivity was found to be 18.7 μM and 0.4723 μM μA cm, respectively. The obtained two-dimensional architecture has increased the surface area, while the nitrogen and oxygen functional groups act as an active site for sensing the mercury ions. This study will open a new door for developing metal-free catalysts through a green and sustainable approach by recycling and utilization of waste biomass.
资源的可持续利用促使我们创造环保的工艺，通过最小化化学物质的使用和减少能源需求，从废生物质中合成新型碳纳米材料。在目前的工作中，我们将重点放在可持续性上，通过水热处理将豚草转化为碳基纳米材料，然后在氮气氛围下的管式炉中加热，从而有效地管理豚草。XPS 研究证实了生物质衍生碳中天然存在的氮和含氧官能团。HRTEM 图像清楚地表明，纳米结构采用了层状二维结构。此外，还分析了纳米材料对汞电化学检测的能力，检测限为 6.17 μM，而定量限和灵敏度分别为 18.7 μM 和 0.4723 μA cm。获得的二维结构增加了表面积，而氮和氧官能团则作为传感汞离子的活性位点。这项研究将通过回收和利用废生物质的绿色和可持续方法为开发无金属催化剂开辟新的途径。
