In situ growth of NiCo2O4 nanosheets on N,S co-doped rice husk biochar for ultrasensitive and selective Pb2 + and Cd2+ electrochemical sensing - Mingmei Ge; Xinying Han; Rui Wang; Chenxi Wu; Shiyu Wang; Bao Chang; Zhuang Miao; Yang Zhao; Huan Wang (Journal of Environmental Chemical Engineering, 2025)