Influence of O2 on structural evolution of biochar in oxidative pyrolysis of cellulose - Gao, Guoming; Hu, Xun; Shao, Yuewen; Li, Chao; Zhang, Lijun; Gao, Wenran; Ding, Kuan; Huang, Yong; Gholizadeh, Mortaza; Zhang, Shu (Journal of Analytical and Applied Pyrolysis, 2024)