TY - JOUR
T1 - Heterogeneous activation of persulfate by Mg doped Ni(OH)2 for efficient degradation of phenol
AU - Zhu, Fang
AU - Zhou, Siyi
AU - Sun, Mengying
AU - Ma, Jianfeng
AU - Zhang, Wei
AU - Li, Kunjie
AU - Cheng, Hao
AU - Komarneni, Sridhar
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant No. 20968005 ), “Qing Lan Project” of Jiangsu Province , “333 Project” of Jiangsu Province , Postgraduate Research & Practice Innovation Program of Jiangsu Province , the High Levels of Innovation Team and Excellence Scholars Program in Colleges of Guangxi and the Opening Project of Guangxi Key Laboratory of Green Processing of Sugar Resources (No. GXTZY201803 ). One of us (SK) was supported by the College of Agricultural Sciences under Station Research Project No. PEN04705 . This work was also supported by Changzhou University Student Extracurricular Innovation and Entrepreneurship Fund Project No. 2021-A-28 .
Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant No. 20968005), “Qing Lan Project” of Jiangsu Province, “333 Project” of Jiangsu Province, Postgraduate Research & Practice Innovation Program of Jiangsu Province, the High Levels of Innovation Team and Excellence Scholars Program in Colleges of Guangxi and the Opening Project of Guangxi Key Laboratory of Green Processing of Sugar Resources (No. GXTZY201803). One of us (SK) was supported by the College of Agricultural Sciences under Station Research Project No. PEN04705. This work was also supported by Changzhou University Student Extracurricular Innovation and Entrepreneurship Fund Project No. 2021-A-28.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2022/1
Y1 - 2022/1
N2 - Mg doped Ni(OH)2 was synthesized and investigated as an efficient material to activate persulfate (PS) for phenol degradation. The property of the Ni(OH)2 material was enhanced by Mg doping as the removal efficiency of phenol was increased from 74.82 % in Ni(OH)2/PS system to 89.53 % in Mg-doped Ni(OH)2/PS system within 20 min. Such a high removal efficiency revealed that doping Mg into Ni(OH)2 brings about more defects (oxygen vacancies), which facilitated the formation of more active species in the degradation process. The removal efficiencies of phenol increased with the increase of the initial pH from 3 to 11. The influences of Cl−, NO3− and HCO3− on the stability of the system were also studied and the results showed that removal rates of all systems in the presence of these different inorganic anions could reached about 90 % within 20 min. Based on the electron spin resonance (ESR) experiments, 1O2, O2·-, ·OH and SO4•− were identified as the active species in Mg-doped Ni(OH)2/PS system for phenol degradation and a degradation mechanism was proposed for this system. In addition, the as-prepared material retained its activation performance even after 3 repeated cycles.
AB - Mg doped Ni(OH)2 was synthesized and investigated as an efficient material to activate persulfate (PS) for phenol degradation. The property of the Ni(OH)2 material was enhanced by Mg doping as the removal efficiency of phenol was increased from 74.82 % in Ni(OH)2/PS system to 89.53 % in Mg-doped Ni(OH)2/PS system within 20 min. Such a high removal efficiency revealed that doping Mg into Ni(OH)2 brings about more defects (oxygen vacancies), which facilitated the formation of more active species in the degradation process. The removal efficiencies of phenol increased with the increase of the initial pH from 3 to 11. The influences of Cl−, NO3− and HCO3− on the stability of the system were also studied and the results showed that removal rates of all systems in the presence of these different inorganic anions could reached about 90 % within 20 min. Based on the electron spin resonance (ESR) experiments, 1O2, O2·-, ·OH and SO4•− were identified as the active species in Mg-doped Ni(OH)2/PS system for phenol degradation and a degradation mechanism was proposed for this system. In addition, the as-prepared material retained its activation performance even after 3 repeated cycles.
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U2 - 10.1016/j.chemosphere.2021.131647
DO - 10.1016/j.chemosphere.2021.131647
M3 - Article
C2 - 34346329
AN - SCOPUS:85111330849
SN - 0045-6535
VL - 286
JO - Chemosphere
JF - Chemosphere
M1 - 131647
ER -