Nanocrystalline cobalt–nickel–boron (metal boride) catalysts for efficient hydrogen production from the hydrolysis of sodium borohydride

Paksoy, Aybike; Kurtoğlu, Samira Fatma; Dizaji, Azam Khodadadi; Altıntaş, Zerrin; Khoshsima, Sina; Uzun, Alper; Balcı, Özge

doi:10.1016/j.ijhydene.2020.12.017

Cited by 49 publications

(18 citation statements)

References 51 publications

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“…More importantly, the change of catalytic performance could be directly related to the crystalline phase existing in the catalyst structure, and the crystal form of Ag/Co – B/CTAB catalyst would significantly improve the catalytic performance and shorten the reaction time. [ 50–52 ]…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a Novel Ag/Co–B/CTAB Catalyst via Chemical Reaction at Room Temperature for Hydrolysis of Ammonia Borane

et al. 2022

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Co–B has outstanding catalytic activity in catalyzing the hydrolysis of ammonia borane (AB) to produce hydrogen and has been widely studied and applied. However, the high surface energy and magnetic properties of Co–B catalysts make the particles easily agglomerate and have few active sites. Herein, a novel compound Ag/Co–B/CTAB with high catalytic activity is prepared by chemical reduction. The compound Ag/Co–B/CTAB is characterized by Fourier‐transform infrared, X‐Ray diffraction, X‐Ray photoelectron spectroscopy, and transmission electron microscopy, which show that Ag+ in the compound Ag/Co–B/CTAB is reduced entirely to Ag acting as an atomic barrier to improve dispersion of Co–B due to a large specific surface area (168.8153 m2 g−1). Moreover, the performance of Co–B doped with Ag in the hydrolysis of AB is studied and the compound Ag/Co–B/CTAB has a hydrogen generation rate of 17.685 L min−1·g−1 at 30 °C with a low activation energy of 13.33 kJ mol−1. The work on the Ag/Co–B/CTAB catalyst provides an essential insight into developing efficient hydrogen‐producing catalysts by regulating the electron transfer between metal and Co–B.

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Section: Resultsmentioning

confidence: 99%

Synthesis of a Novel Ag/Co–B/CTAB Catalyst via Chemical Reaction at Room Temperature for Hydrolysis of Ammonia Borane

et al. 2022

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“…The hydrostatic pressure formed due to the presence of the solution in the burette; the vapor pressure of water was deducted; and the total pressure of the H 2 collected was assumed constant throughout the experiment at atmospheric pressure. All calculations were performed based on the ideal gas law [ 56 ].…”

Section: Methodsmentioning

confidence: 99%

Amine-Functionalized Natural Halloysite Nanotubes Supported Metallic (Pd, Au, Ag) Nanoparticles and Their Catalytic Performance for Dehydrogenation of Formic Acid

Song

Tan

et al. 2022

Nanomaterials

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In today’s age of resource scarcity, the low-cost development and utilization of renewable energy, e.g., hydrogen energy, have attracted much attention in the world. In this work, cheap natural halloysite nanotubes (HNTs) were modified with γ-aminopropyltriethoxysilane (APTES), and the functionalized HNTs were used as to support metal (Pd, Au, Ag) catalysts for dehydrogenation of formic acid (DFA). The supports and fabricated catalysts were characterized with ICP, FT-IR, XRD, XPS and TEM. The functional groups facilitate the anchoring of metal particles to the supports, which brings about the high dispersion of metallic particles in catalysts. The catalysts show high activity against DFA and exhibit selectivity of 100% toward H2 at room temperature or less. The interactions between active centers and supports were investigated by evaluation and comparison of the catalytic performances of Pd/NH2-HNTs, PdAg/NH2-HNTs and PdAu/NH2-HNTs for DFA.

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“…The preparation of high purity nanocrystalline metal borides has attracted the attention of many material chemists due to the remarkable physicochemical properties of these compounds, such as high strength, refractoriness, resistance to oxidation, corrosion, wear, etc. [ 1 , 2 , 3 , 4 ]. Cobalt borides are compounds with the general formula Co x B y ; two main representatives are CoB and Co 2 B.…”

Section: Introductionmentioning

confidence: 99%

A New Approach to the Synthesis of Nanocrystalline Cobalt Boride in the Course of the Thermal Decomposition of Cobalt Complexes [Co(DMF)6]2+ with Boron Cluster Anions

et al. 2023

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In the course of the study, nanocrystalline cobalt monoboride was prepared by thermal decomposition of precursors [Co(DMF)6][An], where [An] = [B12H12]2– (1), [trans-B20H18]2– (2) or [B10Cl10]2– (3) in an argon atmosphere. Three new salt-like compounds 1–3 were prepared when Co(NO3)2 was allowed to react with (Et3NH)2[An]. Compound 1 is new; the structures of compounds 2 and 3 have been previously reported. Samples 1–3 were annealed at 900 °C in argon to form samples 1a–3a, which were characterized by single crystal XRD for 1 and powder XRD for 1–3. Powder XRD on the products showed the formation of BN and CoB for 1a in a 1:1 ratio; 2a gave a higher CoB:BN ratio but an overall decreased crystallinity. For 3a, only CoB was found. IR spectra of samples 1a–3a as well as X-ray spectral fluorescence analysis for 3a confirmed these results. The nanoparticular character of the decomposition products 1a–3a was shown using TEM; quite small particle sizes of about 10–15 nm and a quite normal size distribution were found for 1a and 2a, while the decomposition of 3 gave large particles with 200–350 nm and a broad distribution.

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Nanocrystalline cobalt–nickel–boron (metal boride) catalysts for efficient hydrogen production from the hydrolysis of sodium borohydride

Cited by 49 publications

References 51 publications

Synthesis of a Novel Ag/Co–B/CTAB Catalyst via Chemical Reaction at Room Temperature for Hydrolysis of Ammonia Borane

Synthesis of a Novel Ag/Co–B/CTAB Catalyst via Chemical Reaction at Room Temperature for Hydrolysis of Ammonia Borane

Amine-Functionalized Natural Halloysite Nanotubes Supported Metallic (Pd, Au, Ag) Nanoparticles and Their Catalytic Performance for Dehydrogenation of Formic Acid

A New Approach to the Synthesis of Nanocrystalline Cobalt Boride in the Course of the Thermal Decomposition of Cobalt Complexes [Co(DMF)6]2+ with Boron Cluster Anions

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