Chih-Ming Chou, Yung-Dun Dai, Jia-Hou Lin, Ching Yuan*, Yun-Hwei Shen Preparation of Graphene-like Biochar from Agricultural Waste and its Applications on Electrochemical Sensing of Chlortetracycline CESE-2023 Conference Challenges in Environmental Science and Engineering, Nov.5-9, 2023.