Electrospun carbon nanofiber-encapsulated NiS nanoparticles as an efficient catalyst for hydrogen production from hydrolysis of sodium borohydride Abdullah M. Al-Enizi a , Ayman Nafady a,b,* , M.M. El-Halwany c , Robert M. Brooks d,** , Ahmed Abutaleb e , Ayman Yousef e,f,*** a Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia b Department of Chemistry, Faculty of Science, Sohag University, Sohag, 82524, Egypt c Engineering Mathematics and Physics Department, Faculty of Engineering, Mansoura University, El-Mansoura, Egypt d Department of Civil and Environmental Engineering, Temple University, Philadelphia, PA, 19122, USA e Chemical Engineering Department, Faculty of Engineering, Jazan University, Jazan, Saudi Arabia f Department of Mathematics and Physics Engineering, Faculty of Engineering at Mataria, Helwan University, Cairo, 11718, Egypt highlights graphical abstract  Synthesis of carbon nanofibers (CNFs) impeded with NiS nano- particles (NPs) via one-step elec- trospinning technique.  The as-prepared NiS@CNFs cata- lyst has significantly higher sur- face area than its reported values.  High catalytic performance for H 2 production from hydrolytic dehy- drogenation of SBH in alkaline media.  No chemical and/or physical changes in catalyst composition after five successive cycles with quantitative conversion rates. article info Article history: Received 10 March 2019 Received in revised form 21 June 2019 abstract Carbon nanofibers (CNFs) incorporating NiS nanoparticles (NPs), namely NiS@CNFs were prepared by one-step electrospinning and successfully employed as a catalyst for hydrogen production from hydrolytic dehydrogenation of sodium borohydride (SBH). As-prepared NiS@CNFs, composed of polyacrylonitrile (PAN), nickel acetate, and ammonium sulfide, * Corresponding author. Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia. ** Corresponding author. Department of Civil and Environmental Engineering, Temple University, Philadelphia, PA 19122, USA. *** Corresponding author. Chemical Engineering Department, Faculty of Engineering, Jazan University, Jazan, Saudi Arabia. E-mail addresses: anafady@ksu.edu.sa (A. Nafady), rmbrooks@temple.edu (R.M. Brooks), ayman.youssef@m-eng.helwan.edu.eg (A. Yousef). Available online at www.sciencedirect.com ScienceDirect journal homepage: www.elsevier.com/locate/he international journal of hydrogen energy xxx (xxxx) xxx https://doi.org/10.1016/j.ijhydene.2019.06.152 0360-3199/© 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. Please cite this article as: Al-Enizi AM et al., Electrospun carbon nanofiber-encapsulated NiS nanoparticles as an efficient catalyst for hydrogen production from hydrolysis of sodium borohydride, International Journal of Hydrogen Energy, https://doi.org/10.1016/ j.ijhydene.2019.06.152