%0 Journal Article
%A Zhao, Haitao
%A Yang, Gang
%A Gao, Xiang
%A Pang, Cheng
Heng
%A Kingman, Samuel W.
%A Wu, Tao
%D 2016
%T Hg0 Capture over CoMoS/γ-Al2O3 with
MoS2 Nanosheets at Low Temperatures
%U https://acs.figshare.com/articles/journal_contribution/Hg_sup_0_sup_Capture_over_CoMoS_Al_sub_2_sub_O_sub_3_sub_with_MoS_sub_2_sub_Nanosheets_at_Low_Temperatures/2086279
%R 10.1021/acs.est.5b04278.s001
%2 https://acs.figshare.com/ndownloader/files/3719497
%K MoS 2 nanosheets
%K IWI
%K 2O
%K MoS 2 Nanosheets
%K Hg 0
%K unsulfided cobalt atoms
%K TMDC
%K CUS
%K Hg 0 Capture
%X CoMoS/γ-Al2O3 sorbent was prepared
via incipient wetness impregnation (IWI) and sulfur-chemical vapor
reaction (S-CVR) methods and tested in terms of its potential for
Hg0 capture. It was observed that the CoMoO/γ-Al2O3 showed a Hg0 capture efficiency around
75% at a temperature between 175 and 325 °C while CoMoS/γ-Al2O3 achieved almost 100% Hg0 removal
efficiency at 50 °C. The high removal efficiency for CoMoS/γ-Al2O3 remained unchanged for 2000 min in the test.
Its theoretical capacity for Hg0 capture was found to be
18.95 mg/g based on the Elovich model. The ability of this material
for Hg0 capture is atributed to the MoS2 nanosheets
coated on surface of the maro- and meso-pores of γ-Al2O3. These MoS2 are two-dimensional transition-metal
dichalcogenide (2D TMDC) assembled with unsulfided cobalt atoms at
the edges. It is believed that these MoS2 nanosheets provided
dense active sites for Hg0 capture. The removal of Hg0 at low temperatures was achieved via the combination of Hg0 with the chalcogen (S) atoms on the entire basal plane of
the MoS2 nanosheets with coordinative unsaturated sites
(CUS) to form a stable compound, HgS.
%I ACS Publications