Enhancing low-temperature NH3-SCR performance with hollow structure Cu/SAPO-34 catalysts - Xuejie Sui; Zhaoke Meng; Zehui Ma; Weiwei Zheng; Jingrui Yuan; Xuchao Geng; Fei Wang; Yuchao Lyu; Jianye Fu; Lishuang Ma; Xinmei Liu (Chemical Engineering Journal, 2026)