PMID- 33291883
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20201223
IS  - 1944-8252 (Electronic)
IS  - 1944-8244 (Linking)
VI  - 12
IP  - 51
DP  - 2020 Dec 23
TI  - Uniform Mesoporous Amorphous Cobalt-Inherent Silicon Oxide as a Highly Active 
      Heterogeneous Catalyst in the Activation of Peroxymonosulfate for Rapid Oxidation 
      of 2,4-Dichlorophenol: The Important Role of Inherent Cobalt in the Catalytic 
      Mechanism.
PG  - 57190-57206
LID - 10.1021/acsami.0c20341 [doi]
AB  - Amorphous cobalt-inherent silicon oxide (Co-SiOx) was synthesized for the first 
      time and employed as a highly active catalyst in the activation of 
      peroxymonosulfate (PMS) for the rapid oxidation of 2,4-dichlorophenol (2,4-DCP). 
      The characterization results revealed that the 0.15Co-SiOx possessed a high 
      specific surface area of 607.95 m(2)/g with a uniform mesoporous structure (24.33 
      nm). The X-ray diffraction patterns indicate that the substituted cobalt atoms 
      enlarge the unit cell parameter of the original SiO(2), and the selected area 
      electron diffraction pattern confirmed the amorphous nature of Co-SiOx. More bulk 
      oxygen vacancies (O(v)) existing in the Co-SiOx were identified to be one of the 
      primary contributors to the significantly enhanced catalytic activation of PMS. 
      The cobalt substitution both creates and stabilizes the surficial O(v) and forms 
      the adequately active Co(II)-O(v) pairs which engine the electron transfer 
      process during the catalytic activities. The active Co(II)-O(v) pairs weaken the 
      average electronegativity of Co/Si and Co/O sites, resulting in the prevalent 
      changes in final state energy, which is the main driving cause of the binding 
      energy shifts in the X-ray photoelectron spectroscopy (XPS) spectra of Si and O 
      among all samples. The increase of the relative proportion of Co(III) in the 
      spent Co-SiOx probably causes the binding energy shifts of the Co XPS spectrum 
      compared to that of the Co-SiOx. The amorphous Co-SiOx outperforms stable and 
      quick 2,4-DCP degradation, achieving a much higher kinetic rate of 0.7139 min(-1) 
      at pH = 7.02 than others via sulfate radical advanced oxidation processes (AOPs), 
      photo-Fenton AOPs, H(2)O(2) reagent AOPs, and other AOP approaches. The efficient 
      degradation performance makes the amorphous Co-SiOx as a promising catalyst in 
      removing 2,4-DCP or organic-rich pollutants.
FAU - Lian, Qiyu
AU  - Lian Q
AD  - Department of Civil Engineering, University of Louisiana at Lafayette, P.O. Box 
      43598, Lafayette, Louisiana 70504, United States.
AD  - Center for Environmental Technology, The Energy Institute of Louisiana, P.O. Box 
      43597, Lafayette, Louisiana 70504, United States.
FAU - Roy, Amitava
AU  - Roy A
AD  - The J. Bennett Johnston, Sr., Center for Advanced Microstructures and Devices 
      (CAMD), Baton Rouge, Louisiana 70806, United States.
FAU - Kizilkaya, Orhan
AU  - Kizilkaya O
AD  - The J. Bennett Johnston, Sr., Center for Advanced Microstructures and Devices 
      (CAMD), Baton Rouge, Louisiana 70806, United States.
FAU - Gang, Daniel Dianchen
AU  - Gang DD
AUID- ORCID: 0000-0002-2565-0830
AD  - Department of Civil Engineering, University of Louisiana at Lafayette, P.O. Box 
      43598, Lafayette, Louisiana 70504, United States.
AD  - Center for Environmental Technology, The Energy Institute of Louisiana, P.O. Box 
      43597, Lafayette, Louisiana 70504, United States.
FAU - Holmes, William
AU  - Holmes W
AD  - Center for Environmental Technology, The Energy Institute of Louisiana, P.O. Box 
      43597, Lafayette, Louisiana 70504, United States.
AD  - Department of Chemical Engineering, University of Louisiana at Lafayette, P.O. 
      Box 43675, Lafayette, Louisiana 70504, United States.
FAU - Zappi, Mark E
AU  - Zappi ME
AUID- ORCID: 0000-0002-7608-076X
AD  - Department of Civil Engineering, University of Louisiana at Lafayette, P.O. Box 
      43598, Lafayette, Louisiana 70504, United States.
AD  - Center for Environmental Technology, The Energy Institute of Louisiana, P.O. Box 
      43597, Lafayette, Louisiana 70504, United States.
AD  - Department of Chemical Engineering, University of Louisiana at Lafayette, P.O. 
      Box 43675, Lafayette, Louisiana 70504, United States.
FAU - Zhang, Xu
AU  - Zhang X
AD  - Beijing International Scientific and Technological Cooperation Base of Water 
      Pollution Control Techniques for Antibiotics and Resistance Genes, School of 
      Civil Engineering, Beijing Jiaotong University, 3 Shangyuancun, Beijing 100044, 
      P. R. China.
FAU - Yao, Hong
AU  - Yao H
AUID- ORCID: 0000-0002-3652-0951
AD  - Beijing International Scientific and Technological Cooperation Base of Water 
      Pollution Control Techniques for Antibiotics and Resistance Genes, School of 
      Civil Engineering, Beijing Jiaotong University, 3 Shangyuancun, Beijing 100044, 
      P. R. China.
LA  - eng
PT  - Journal Article
DEP - 20201208
PL  - United States
TA  - ACS Appl Mater Interfaces
JT  - ACS applied materials & interfaces
JID - 101504991
SB  - IM
OTO - NOTNLM
OT  - 2,4-dichlorophenol degradation
OT  - cobalt silicon oxide
OT  - final state effects
OT  - oxygen vacancies
OT  - peroxymonosulfate activation
EDAT- 2020/12/10 06:00
MHDA- 2020/12/10 06:01
CRDT- 2020/12/09 05:40
PHST- 2020/12/10 06:00 [pubmed]
PHST- 2020/12/10 06:01 [medline]
PHST- 2020/12/09 05:40 [entrez]
AID - 10.1021/acsami.0c20341 [doi]
PST - ppublish
SO  - ACS Appl Mater Interfaces. 2020 Dec 23;12(51):57190-57206. doi: 
      10.1021/acsami.0c20341. Epub 2020 Dec 8.