Imperial College London
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Dr Po-Heng (Henry) Lee

Faculty of Engineering, Department of Civil and Environmental Engineering

Senior Lecturer in Wastewater Engineering
 
 
 
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Contact

 

+44 (0)20 7594 5993po-heng.lee

 
 
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Location

 

310ASkempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Yang:2019:10.1002/adfm.201807191,
author = {Yang, Z and Li, H and Yang, J and Feng, S and Liu, X and Zhao, J and Qu, W and Li, P and Feng, Y and Lee, PH and Shih, K},
doi = {10.1002/adfm.201807191},
journal = {Advanced Functional Materials},
title = {Nanosized Copper Selenide Functionalized Zeolitic Imidazolate Framework-8 (CuSe/ZIF-8) for Efficient Immobilization of Gas-Phase Elemental Mercury},
url = {http://dx.doi.org/10.1002/adfm.201807191},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - © 2019 WILEY-VCH Verlag GmbH  &  Co. KGaA, Weinheim  A key challenge in elemental mercury (Hg 0 ) decontamination from flue gas lies in the design of a sorbent with abundant reactive adsorption sites that exhibit high affinity toward Hg 0 to simultaneously achieve rapid capture and large capacity. Herein, zeolitic imidazolate framework-8 (ZIF-8) supported copper selenide (CuSe) nanocomposites are synthesized by a newly designed two-step surfactant-assisted method. The as-prepared CuSe/ZIF-8 with CuSe to ZIF-8 mass ratio of 80% (0.8NC-ZIF) exhibits unparalleled performance toward Hg 0 adsorption with equilibrium capacity and average rate reaching 309.8 mg g −1 and 105.3 µg g −1 min −1 , respectively, surpassing all reported metal sulfides and traditional activated-carbon-based sorbents. The impressive performance of 0.8NC-ZIF for Hg 0 immobilization is primarily attributed to the adequate exposure of the Se-terminated sites with high affinity toward Hg 0 resulted from the layered structure of CuSe. The adsorbed mercury selenide exhibits even higher stability than the most stable natural mercury ore—that is, mercury sulfide—hence minimizing its environmental impact when the CuSe/ZIF-8 sorbent is dumped. This work provides a new mindset for future design of sorbents for efficient Hg 0 capture from industrial flue gas. The results also justify the candidature of CuSe/ZIF to be applicable for mercury pollution remediation in real-world conditions.
AU  - Yang,Z
AU  - Li,H
AU  - Yang,J
AU  - Feng,S
AU  - Liu,X
AU  - Zhao,J
AU  - Qu,W
AU  - Li,P
AU  - Feng,Y
AU  - Lee,PH
AU  - Shih,K
DO  - 10.1002/adfm.201807191
PY  - 2019///
SN  - 1616-301X
TI  - Nanosized Copper Selenide Functionalized Zeolitic Imidazolate Framework-8 (CuSe/ZIF-8) for Efficient Immobilization of Gas-Phase Elemental Mercury
T2  - Advanced Functional Materials
UR  - http://dx.doi.org/10.1002/adfm.201807191
ER  -
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