PMID- 32841669
OWN - NLM
STAT- MEDLINE
DCOM- 20210416
LR  - 20210416
IS  - 1879-0003 (Electronic)
IS  - 0141-8130 (Linking)
VI  - 164
DP  - 2020 Dec 1
TI  - Catalytic potential of cobalt oxide and agar nanocomposite hydrogel for the 
      chemical reduction of organic pollutants.
PG  - 2922-2930
LID - S0141-8130(20)34231-8 [pii]
LID - 10.1016/j.ijbiomac.2020.08.140 [doi]
AB  - In this study, cobalt oxide nanoparticles (Co(3)O(4) NPs) were synthesized by 
      precipitation method from cobalt sulphate solution with basic pH, followed by 
      calcination. The ex-situ synthesized Co(3)O(4) NPs were mixed with hot agar (AG) 
      aqueous solution. The preparation of AG- Co(3)O(4) nanocomposite hydrogel was 
      carried out by self-association method promoted by thermal denaturation. The 
      quenching of hot suspension from 80  degrees C to room temperature resulted in the 
      formation of AG-Co(3)O(4) nanocomposite hydrogel. The as-synthesized AG-Co(3)O(4) 
      was characterized by FTIR, XRD and SEM techniques. In order to test the catalytic 
      activity, AG-Co(3)O(4) was used as a heterogeneous catalyst for the reduction of 
      methylene blue (MB), congo red (CR) and 4-nitrophenol (4-NP). The excellent 
      performance of the AG-Co(3)O(4) was shown by the reaction rate constant (k(app)) 
      values of 0.3623, 0.2114 and 0.2893 for MB, 4-NP and CR, respectively. All these 
      results were obtained with R(2) above 94 and utilization of an AG-Co(3)O(4) 
      catalyst. Furthermore, the catalytic reduction was studied with varying dye 
      concentration and catalyst dose. This study showed that AG-Co(3)O(4) catalyst has 
      high potential for remediation of environmental pollutants in wastewaters.
CI  - Copyright (c) 2020 Elsevier B.V. All rights reserved.
FAU - Khalil, Ashi
AU  - Khalil A
AD  - Institute of Chemical Sciences, University of Peshawar, Pakistan.
FAU - Ali, Nauman
AU  - Ali N
AD  - Institute of Chemical Sciences, University of Peshawar, Pakistan. Electronic 
      address: nali75pk@uop.edu.pk.
FAU - Khan, Adnan
AU  - Khan A
AD  - Institute of Chemical Sciences, University of Peshawar, Pakistan.
FAU - Asiri, Abdullah M
AU  - Asiri AM
AD  - Chemistry Department, Faculty of Science, King Abdulaziz University, P. O. Box 
      80203, Jeddah 21589, Saudi Arabia; Center of Excellence for Advanced Materials 
      Research, King Abdulaziz University, P. O. Box 80203, Jeddah 21589, Saudi Arabia.
FAU - Kamal, Tahseen
AU  - Kamal T
AD  - Center of Excellence for Advanced Materials Research, King Abdulaziz University, 
      P. O. Box 80203, Jeddah 21589, Saudi Arabia.
LA  - eng
PT  - Journal Article
DEP - 20200822
PL  - Netherlands
TA  - Int J Biol Macromol
JT  - International journal of biological macromolecules
JID - 7909578
RN  - 0 (Environmental Pollutants)
RN  - 0 (Hydrogels)
RN  - 0 (Nitrophenols)
RN  - 0 (Oxides)
RN  - 3G0H8C9362 (Cobalt)
RN  - 3U05FHG59S (Congo Red)
RN  - 9002-18-0 (Agar)
RN  - T42P99266K (Methylene Blue)
RN  - USK772NS56 (cobalt oxide)
RN  - Y92ZL45L4R (4-nitrophenol)
SB  - IM
MH  - Agar/*chemistry
MH  - Catalysis
MH  - Chemical Precipitation
MH  - Cobalt/chemistry/*pharmacology
MH  - Congo Red/chemistry
MH  - Environmental Pollutants/*chemistry
MH  - Hydrogels
MH  - Methylene Blue/chemistry
MH  - Nanocomposites
MH  - Nitrophenols/chemistry
MH  - Oxides/chemistry/*pharmacology
OTO - NOTNLM
OT  - Agar
OT  - Nanocomposite hydrogel
OT  - Pollutants
EDAT- 2020/08/26 06:00
MHDA- 2021/04/17 06:00
CRDT- 2020/08/26 06:00
PHST- 2020/06/04 00:00 [received]
PHST- 2020/08/17 00:00 [revised]
PHST- 2020/08/17 00:00 [accepted]
PHST- 2020/08/26 06:00 [pubmed]
PHST- 2021/04/17 06:00 [medline]
PHST- 2020/08/26 06:00 [entrez]
AID - S0141-8130(20)34231-8 [pii]
AID - 10.1016/j.ijbiomac.2020.08.140 [doi]
PST - ppublish
SO  - Int J Biol Macromol. 2020 Dec 1;164:2922-2930. doi: 
      10.1016/j.ijbiomac.2020.08.140. Epub 2020 Aug 22.