PMID- 35425214
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20220416
IS  - 2046-2069 (Electronic)
IS  - 2046-2069 (Linking)
VI  - 12
IP  - 3
DP  - 2022 Jan 5
TI  - Solution combustion synthesis of Ni-based hybrid metal oxides for oxygen 
      evolution reaction in alkaline medium.
PG  - 1694-1703
LID - 10.1039/d1ra07304d [doi]
AB  - Oxygen evolution reaction (OER) has arisen as an outstanding technology for 
      energy generation, conversion, and storage. Herein, we investigated the synthesis 
      of nickel-based hybrid metal oxides (Ni (x) M(1-x) O (y) ) and their catalytic 
      performance towards OER. Ni (x) M(1-x) O (y) catalysts were synthesized by 
      solution combustion synthesis (SCS) using the metal nitrates as oxidizer and 
      glycine as fuel. Scanning electron microscope (SEM) micrographs display a porous 
      morphology for the hybrid binary Ni (x) M(1-x) O (y) , the common feature of 
      combusted materials. X-ray diffraction (XRD) of Ni (x) M(1-x) O (y) depicted 
      well-defined diffraction peaks, which confirms the crystalline nature of 
      synthesized catalysts. The particle size of as-synthesized materials ranges 
      between 20 and 30 nm with a mesoporous nature as revealed by N(2)-physisorption. 
      The electrocatalytic performance of the as-prepared materials was evaluated 
      towards OER in alkaline medium. Among them, Ni (x) Co(1-x) O (y) showed the best 
      catalytic performance. For instance, it exhibited the lowest overpotential at a 
      current density of 10 mA cm(-2) (404 mV), onset potential (1.605 V), and Tafel 
      slope (52.7 mV dec(-1)). The enhanced electrocatalytic performance of Ni (x) 
      Co(1-x) O (y) was attributed to the synergism between cobalt and nickel and the 
      alteration of the electronic structure of nickel. Also, Ni (x) Co(1-x) O (y) 
      afforded the highest Ni(3+)/Ni(2+) when compared to other electrocatalysts. This 
      leads to higher oxidation states of Ni species, which promote and improve the 
      electrocatalytic activity.
CI  - This journal is (c) The Royal Society of Chemistry.
FAU - Abu Hatab, Aymen S
AU  - Abu Hatab AS
AUID- ORCID: 0000-0001-8045-2127
AD  - Department of Chemistry, Faculty of Science, Universiti Putra Malaysia UPM 43400 
      Serdang Selangor Malaysia basya@upm.edu.my.
AD  - Integrated Chemical BioPhysics Research, Faculty of Science, Universiti Putra 
      Malaysia UPM 43400 Serdang Selangor Malaysia.
FAU - Ahmad, Yahia H
AU  - Ahmad YH
AUID- ORCID: 0000-0002-5217-1966
AD  - Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar 
      University Doha 2713 Qatar siham@qu.edu.qa.
FAU - Abdul Rahman, Mohd B
AU  - Abdul Rahman MB
AUID- ORCID: 0000-0002-5665-2564
AD  - Department of Chemistry, Faculty of Science, Universiti Putra Malaysia UPM 43400 
      Serdang Selangor Malaysia basya@upm.edu.my.
AD  - Integrated Chemical BioPhysics Research, Faculty of Science, Universiti Putra 
      Malaysia UPM 43400 Serdang Selangor Malaysia.
FAU - Al-Qaradawi, Siham Y
AU  - Al-Qaradawi SY
AUID- ORCID: 0000-0003-0885-8194
AD  - Department of Chemistry and Earth Sciences, College of Arts and Sciences, Qatar 
      University Doha 2713 Qatar siham@qu.edu.qa.
LA  - eng
PT  - Journal Article
DEP - 20220111
PL  - England
TA  - RSC Adv
JT  - RSC advances
JID - 101581657
PMC - PMC8978898
COIS- There are no conflicts to declare.
EDAT- 2022/04/16 06:00
MHDA- 2022/04/16 06:01
PMCR- 2022/01/11
CRDT- 2022/04/15 05:30
PHST- 2021/09/30 00:00 [received]
PHST- 2021/12/22 00:00 [accepted]
PHST- 2022/04/15 05:30 [entrez]
PHST- 2022/04/16 06:00 [pubmed]
PHST- 2022/04/16 06:01 [medline]
PHST- 2022/01/11 00:00 [pmc-release]
AID - d1ra07304d [pii]
AID - 10.1039/d1ra07304d [doi]
PST - epublish
SO  - RSC Adv. 2022 Jan 11;12(3):1694-1703. doi: 10.1039/d1ra07304d. eCollection 2022 
      Jan 5.