TY - JOUR
T1 - Mono-transition-metal-substituted polyoxometalate intercalated layered double hydroxides for the catalytic decontamination of sulfur mustard simulant
AU - Sun, Xiangrong
AU - Dong, Jing
AU - Li, Zhen
AU - Liu, Huifang
AU - Jing, Xiaoting
AU - Chi, Yingnan
AU - Hu, Changwen
N1 - Publisher Copyright:
© The Royal Society of Chemistry.
PY - 2019
Y1 - 2019
N2 - The Keggin-type mono-transition-metal-substituted [PW 11 M(H 2 O)O 39 ] 5− (PW 11 M, M = Ni, Co, Cu) were intercalated into Zn 2 Cr-based layered double hydroxide (Zn 2 Cr-LDH) by an exfoliation-reassembly method and the synthesized Zn 2 Cr-LDH-PW 11 M composites were thoroughly characterized by Fourier transform infrared (FT-IR) spectroscopy, powder X-ray diffraction (PXRD), solid state 31 P nuclear magnetic resonance ( 31 P NMR) spectroscopy, thermogravimetric analysis (TGA), inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The three composites can be used as heterogeneous catalysts to promote the oxidative decontamination of the sulfur mustard simulant 2-chloroethyl ethyl sulfide (CEES). Interestingly, a cooperative effect between the PW 11 M cluster and Zn 2 Cr-LDH is evidenced by the fact that the composites have a higher catalytic performance than either of the individual constituents alone. The catalytic activity of Zn 2 Cr-LDH-PW 11 M is significantly influenced by the substituted transition metals, showing the order: Zn 2 Cr-LDH-PW 11 Ni > Zn 2 Cr-LDH-PW 11 Co > Zn 2 Cr-LDH-PW 11 Cu. Under ambient conditions, the Zn 2 Cr-LDH-PW 11 Ni composite can convert 98% of CEES in 3 h using nearly stoichiometric 3% aqueous H 2 O 2 with the selectivity of 94% for the nontoxic product 2-chloroethyl ethyl sulfoxide (CEESO). Moreover, the decontaminating material, Zn 2 Cr-LDH-PW 11 Ni, is stable to leaching and can be readily reused for up to ten cycles without obvious loss of its activity.
AB - The Keggin-type mono-transition-metal-substituted [PW 11 M(H 2 O)O 39 ] 5− (PW 11 M, M = Ni, Co, Cu) were intercalated into Zn 2 Cr-based layered double hydroxide (Zn 2 Cr-LDH) by an exfoliation-reassembly method and the synthesized Zn 2 Cr-LDH-PW 11 M composites were thoroughly characterized by Fourier transform infrared (FT-IR) spectroscopy, powder X-ray diffraction (PXRD), solid state 31 P nuclear magnetic resonance ( 31 P NMR) spectroscopy, thermogravimetric analysis (TGA), inductively coupled plasma atomic emission spectroscopy (ICP-AES), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The three composites can be used as heterogeneous catalysts to promote the oxidative decontamination of the sulfur mustard simulant 2-chloroethyl ethyl sulfide (CEES). Interestingly, a cooperative effect between the PW 11 M cluster and Zn 2 Cr-LDH is evidenced by the fact that the composites have a higher catalytic performance than either of the individual constituents alone. The catalytic activity of Zn 2 Cr-LDH-PW 11 M is significantly influenced by the substituted transition metals, showing the order: Zn 2 Cr-LDH-PW 11 Ni > Zn 2 Cr-LDH-PW 11 Co > Zn 2 Cr-LDH-PW 11 Cu. Under ambient conditions, the Zn 2 Cr-LDH-PW 11 Ni composite can convert 98% of CEES in 3 h using nearly stoichiometric 3% aqueous H 2 O 2 with the selectivity of 94% for the nontoxic product 2-chloroethyl ethyl sulfoxide (CEESO). Moreover, the decontaminating material, Zn 2 Cr-LDH-PW 11 Ni, is stable to leaching and can be readily reused for up to ten cycles without obvious loss of its activity.
UR - http://www.scopus.com/inward/record.url?scp=85064529107&partnerID=8YFLogxK
U2 - 10.1039/c9dt00395a
DO - 10.1039/c9dt00395a
M3 - Article
C2 - 30869728
AN - SCOPUS:85064529107
SN - 1477-9226
VL - 48
SP - 5285
EP - 5291
JO - Dalton Transactions
JF - Dalton Transactions
IS - 16
ER -