Bimetallic Ni-Co nanoparticles as an efficient catalyst of hydrogen generation via hydrolysis of NaBH4

Kytsya, А. Р.; Berezovets, V. V.; Verbovytskyy, Yu.; Bazylyak, L. І.; Kordan, V.; Zavaliy, I.Yu.; Yartys, V.A.

doi:10.1016/j.jallcom.2022.164484

Cited by 57 publications

(10 citation statements)

References 50 publications

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“…In response, scholars have taken measures, such as catalyst doping, to improve them. Different catalysts have emerged, including metal-based catalysts [ 26 , 27 , 28 , 29 , 30 ] and nonmetallic catalysts [ 31 , 32 ]. Recently, Ismail et al [ 26 ] found that the initial dehydrogenation temperature of NaAlH 4 was reduced by about 100 °C after the introduction of CoFe 2 O 4 .…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Yang

Zhang

et al. 2023

Materials

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Due to its high hydrogen storage efficiency and safety, Mg/MgH2 stands out from many solid hydrogen storage materials and is considered as one of the most promising solid hydrogen storage materials. However, thermodynamic/kinetic deficiencies of the performance of Mg/MgH2 limit its practical applications for which a series of improvements have been carried out by scholars. This paper summarizes, analyzes and organizes the current research status of the hydrogen storage performance of Mg/MgH2 and its improvement measures, discusses in detail the hot studies on improving the hydrogen storage performance of Mg/MgH2 (improvement measures, such as alloying treatment, nano-treatment and catalyst doping), and focuses on the discussion and in-depth analysis of the catalytic effects and mechanisms of various metal-based catalysts on the kinetic and cyclic performance of Mg/MgH2. Finally, the challenges and opportunities faced by Mg/MgH2 are discussed, and strategies to improve its hydrogen storage performance are proposed to provide ideas and help for the next research in Mg/MgH2 and the whole field of hydrogen storage.

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Section: Introductionmentioning

confidence: 99%

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Yang

Zhang

et al. 2023

Materials

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“…Sodium borohydride (NaBH 4 ) has attracted much attention due to its high hydrogen content (10.8 wt %) and good chemical stability (decomposition temperature greater than 673 K). 1 However, the slow kinetics hinders the practical application of hydrogen production by NaBH 4 . Finding a suitable catalyst is the key to solving this problem.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Chemical hydrogen-storage materials have become the focus of hydrogen energy research because they can simultaneously solve the problems in traditional hydrogen storage and transportation. Sodium borohydride (NaBH 4 ) has attracted much attention due to its high hydrogen content (10.8 wt %) and good chemical stability (decomposition temperature greater than 673 K) . However, the slow kinetics hinders the practical application of hydrogen production by NaBH 4 .…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Porous NiCo/HZIF-8 Catalyst for Highly Efficient Hydrogen Generation from Sodium Borohydride Hydrolysis

Zhong

et al. 2023

J. Phys. Chem. C

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Designing an efficient catalyst for NaBH4 hydrolysis remains challenging. In this work, the Ni-Co nanocatalyst supported by the zeolitic imidazolate framework (NiCo/HZIF-8) was successfully prepared by an impregnation–chemical reduction method. The microstructure, catalytic activity, and durability of the nanocatalyst were investigated. The as-prepared NiCo/HZIF-8 nanocatalyst shows a hierarchical porous structure with high specific surface area and good dispersion for the metal nanoparticles (MNPs), which is beneficial to exposing active sites and promoting catalytic performance. The activation energy (E a) for the hydrolysis of NaBH4 catalyzed by NiCo/HZIF-8 is as low as 32.01 kJ·mol–1, and the maximum turnover frequency (TOF) is 41,254 mLH2 · gM –1 · min–1, surpassing the performance of numerous non-noble metals and even some noble metal nanocatalysts. In addition, the NiCo/HZIF-8 nanocatalyst can retain 85.5% of its initial catalytic activity for NaBH4 hydrolysis after five cycles.

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“…Selection of Reducing Solvent. Since Co and Ni have low redox potentials, potent reducing agents, such as hydrazine 26 and sodium borohydride, 27 are required to synthesize nanoparticles. Consequently, control over the kinetics of the reduction reaction becomes difficult and leads to the formation of heterogeneous structures.…”

Section: ■ Introductionmentioning

confidence: 99%

Synthesis of Electromagnetic Wave-Absorbing Co–Ni Alloys and Co–Ni Core–Shell Structured Nanoparticles

et al. 2022

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Co–Ni alloy nanoparticles, a potential candidate for microwave absorption material, were successfully synthesized by tuning the reduction timing of Co and Ni ions by introducing oleylamine as a complexing agent and 1-heptanol as a reducing solvent. The formation mechanism elucidated using time-resolved sampling and in situ X-ray absorption spectroscopy (XAS) and ultraviolet-visible (UV-vis) spectrophotometry measurements suggested that the delay in the reduction of Co ions via complexation with oleylamine facilitated the co-reduction of Co with Ni ions and led to the formation of Co–Ni alloys. The successful synthesis of Co–Ni alloys experimentally confirmed the differences in magnetic properties between alloy and core–shell structured Co50Ni50 particles. Further, the syntheses of Co–Ni alloys with different compositions were also possible using the above technique. In addition, the microwave absorption properties were measured using the free-space method utilizing a vector network analyzer of Co50Ni50polyethylene composite with different sheet thicknesses. A reflection loss (RL) value of −25.7 dB at 13.6 GHz for the alloy structure was more significant than the core–shell counterpart. The above values are high compared to results reported in the past. The validity of the measurements was confirmed by utilizing the parameter retrieval method to extract permittivity and permeability from the scattering parameter (S) and recalculation of the RL as a function of frequency.

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Bimetallic Ni-Co nanoparticles as an efficient catalyst of hydrogen generation via hydrolysis of NaBH4

Cited by 57 publications

References 50 publications

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Hydrogen Storage Performance of Mg/MgH2 and Its Improvement Measures: Research Progress and Trends

Hierarchical Porous NiCo/HZIF-8 Catalyst for Highly Efficient Hydrogen Generation from Sodium Borohydride Hydrolysis

Synthesis of Electromagnetic Wave-Absorbing Co–Ni Alloys and Co–Ni Core–Shell Structured Nanoparticles

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