PMID- 33383435 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210201 IS - 1095-7103 (Electronic) IS - 0021-9797 (Linking) VI - 587 DP - 2021 Apr TI - Coaxial nanofibers of nickel/gadolinium oxide/nickel oxide as highly effective electrocatalysts for hydrogen evolution reaction. PG - 457-466 LID - S0021-9797(20)31622-2 [pii] LID - 10.1016/j.jcis.2020.11.103 [doi] AB - Cost-effective, active and stable electrocatalysts are crucial for hydrogen production via electrocatalytic water splitting. Here, we describe the preparation of novel nanofibers (NF) made of Ni/Gd(2)O(3)/NiO heterostructures by electrospinning. The fabricated materials showed high electrocatalytic performance for hydrogen evolution reaction (HER) with onset potential values of 89 mV, which are very close to those of platinum (Pt). NiO chemical and electronic properties were successfully optimized in Ni/Gd(2)O(3)/NiO coaxial heterostructures; NiO NFs doped with Gd(3+) significantly enhanced its electrical conductivity and promoted HER reaction kinetics. These NFs offer the distinct advantages of long-term durability and readiness for hydrogen production via HER, and also better performance than benchmark Pt catalysts. The successful fabrication of these metal oxide NFs and nanostructures may represent a new approach for the rational synthesis of efficient HER catalysts. CI - Copyright (c) 2020 Elsevier Inc. All rights reserved. FAU - El-Maghrabi, Heba H AU - El-Maghrabi HH AD - Institut Europeen des Membranes, IEM-UMR 5635, Univ. Montpellier, ENSCM, CNRS, Montpellier, France; Dept. of Refining, Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, Egypt. Electronic address: heba.el-maghrabi@ensicaen.fr. FAU - Nada, Amr A AU - Nada AA AD - Institut Europeen des Membranes, IEM-UMR 5635, Univ. Montpellier, ENSCM, CNRS, Montpellier, France; Dept. of Analysis and Evaluation, Egyptian Petroleum Research Institute, Nasr City, 11727, Cairo, Egypt. FAU - Bekheet, Maged F AU - Bekheet MF AD - Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Institut fur Werkstoffwissenschaften und -technologien, Technische Universitat Berlin, Hardenbergstrasse 40, 10623 Berlin, Germany. FAU - Roualdes, Stephanie AU - Roualdes S AD - Institut Europeen des Membranes, IEM-UMR 5635, Univ. Montpellier, ENSCM, CNRS, Montpellier, France. FAU - Riedel, Wiebke AU - Riedel W AD - Institut fur Chemie, Freie Universitat Berlin, Arnimallee 22, 14195 Berlin, Germany. FAU - Iatsunskyi, Igor AU - Iatsunskyi I AD - NanoBioMedical Centre, Adam Mickiewicz University in Poznan, 3 Wszechnicy Piastowskiej str., 61-614, Poznan, Poland. FAU - Coy, Emerson AU - Coy E AD - NanoBioMedical Centre, Adam Mickiewicz University in Poznan, 3 Wszechnicy Piastowskiej str., 61-614, Poznan, Poland. FAU - Gurlo, Aleksander AU - Gurlo A AD - Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Institut fur Werkstoffwissenschaften und -technologien, Technische Universitat Berlin, Hardenbergstrasse 40, 10623 Berlin, Germany. FAU - Bechelany, Mikhael AU - Bechelany M AD - Institut Europeen des Membranes, IEM-UMR 5635, Univ. Montpellier, ENSCM, CNRS, Montpellier, France. Electronic address: mikhael.bechelany@umontpellier.fr. LA - eng PT - Journal Article DEP - 20201203 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 SB - IM OTO - NOTNLM OT - Coaxial nanofibers OT - HER OT - Hydrogen generation OT - Ni/Gd(2)O(3)/NiO OT - Water splitting COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2021/01/01 06:00 MHDA- 2021/01/01 06:01 CRDT- 2020/12/31 20:15 PHST- 2020/09/01 00:00 [received] PHST- 2020/11/06 00:00 [revised] PHST- 2020/11/26 00:00 [accepted] PHST- 2021/01/01 06:00 [pubmed] PHST- 2021/01/01 06:01 [medline] PHST- 2020/12/31 20:15 [entrez] AID - S0021-9797(20)31622-2 [pii] AID - 10.1016/j.jcis.2020.11.103 [doi] PST - ppublish SO - J Colloid Interface Sci. 2021 Apr;587:457-466. doi: 10.1016/j.jcis.2020.11.103. Epub 2020 Dec 3.