Nanosized Copper Selenide Functionalized Zeolitic Imidazolate Framework‐8 (CuSe/ZIF‐8) for Efficient Immobilization of Gas‐Phase Elemental Mercury

• DOI: 10.1002/adfm.201807191
• Publication Date: 2019-03-12T18:52:02Z
• Authors: Zequn Yang; Hailong Li; Jianping Yang; Shihao Feng; Xi Liu; Jiexia Zhao; Wenqi Qu; Pu Li; Yong Feng; Po‐Heng Lee; Kaimin Shih
• Keywords: Zeolitic imidazolate framework; Mercury; Imidazolate; Selenide

Abstract A key challenge in elemental mercury (Hg 0 ) decontamination from flue gas lies the design of a sorbent with abundant reactive adsorption sites that exhibit high affinity toward Hg to simultaneously achieve rapid capture and large capacity. Herein, zeolitic imidazolate framework‐8 (ZIF‐8) supported copper selenide (CuSe) nanocomposites are synthesized by newly designed two‐step surfactant‐assisted method. The as‐prepared CuSe/ZIF‐8 CuSe ZIF‐8 mass ratio 80% (0.8NC‐ZIF) exhibits unparalleled performance equilibrium capacity average rate reaching 309.8 mg g −1 105.3 µg min , respectively, surpassing all reported metal sulfides traditional activated‐carbon‐based sorbents. impressive 0.8NC‐ZIF for immobilization is primarily attributed adequate exposure Se‐terminated resulted layered structure CuSe. adsorbed even higher stability than most stable natural ore—that is, sulfide—hence minimizing its environmental impact when dumped. This work provides new mindset future sorbents efficient industrial gas. results also justify candidature CuSe/ZIF be applicable pollution remediation real‐world conditions.