Fine‐tuning coordination from WO to WN in graphene gel based single‐atom W for hydrogenation of p‐chloronitrobenzene. - Cai, An; Zhang, Qicheng; Hou, Fang; Li, Guozhu; Xi, Shibo; Fan, Xiaobin; Peng, Wenchao; Li, Yang (AIChE Journal, 2025)