Assembly and superior performance of palladium nano-catalysts anchored to a magnetic konjac glucomannan-graphene oxide hybrid for H2 generation from ammonia borane

Jia, Hang; Song, Xing-Rui; Liu, Sai; Xu, Xia; Zheng, Xiu-Cheng; Peng, Zhikun; Liu, Pu

doi:10.1016/j.jtice.2019.04.013

Cited by 23 publications

(3 citation statements)

References 37 publications

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“…The efficiency of the Fe 3 O 4 /SiO 2 À NH 2 /HB@Pd nanocomposite catalyst used in this study with various Pd based catalyst systems attached to different magnetite supports (also magnetite supported Ru NPs), in AB hydrolysis reaction is compared in Table 2. [11,17,[38][39][40][41][42][43][44][45] The magnetically separable catalyst prepared by attaching Pd NPs to the surface functionalized Fe 3 O 4 /SiO 2 À NH 2 /HB support material is an effective heterogeneous catalyst that offers practicality in separation and purification for AB hydrolysis reaction.…”

Section: Catalytic Performance Of Fe 3 O 4 /Sio 2 -Nh 2 /Hb@pd Nanoco...mentioning

confidence: 99%

Magnetically isolable Pd(0) nanoparticles supported on surface functionalized Fe₃O₄ for hydrogen generation via ammonia borane hydrolysis

Tercan

2023

ChemistrySelect

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Pd(0) nanoparticles supported on surface functionalized magnetite (Fe3O4/SiO2‐NH2/HB@Pd) were prepared as catalyst for hydrolysis of ammonia borane (AB). The obtained magnetic nanocomposite material was seperated from the reaction media through a permanent magnet and characterized by FT‐IR, XRD, SEM‐EDX, TEM, ICP‐OES and XPS techniques. 100 mg Fe3O4/SiO2−NH2/HB@Pd nanocomposite with Pd metal content of 6.00±0.14 catalyzed the hydrolysis of 10 mM AB at 25 °C with 100 % yield. The presented work includes the effect of catalyst amount and temperature on the rate of the hydrolysis reaction of AB. As a result of the kinetic studies, the activation energy (Ea) for the Fe3O4/SiO2−NH2/HB@Pd catalyzed AB hydrolysis reaction was calculated as 34±1 kJ.mol−1, and the TOF value was calculated as 133 mol H2.(mol Pd(0).h)−1. The designed heterogenous magnetic nanocomposite catalyst demonstrated significant catalytic activity for AB hydrolysis reaction at 25 °C.

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Section: Catalytic Performance Of Fe 3 O 4 /Sio 2 -Nh 2 /Hb@pd Nanoco...mentioning

confidence: 99%

Magnetically isolable Pd(0) nanoparticles supported on surface functionalized Fe₃O₄ for hydrogen generation via ammonia borane hydrolysis

Tercan

2023

ChemistrySelect

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“…[ 7 ] Boron–nitrogen–hydrogen compounds (represented by ammonia borane (AB)) have become one of the most promising hydrogen storage materials due to their high hydrogen storage density, mild hydrogen release conditions, high solubility, and stability in aqueous solution, which can meet the current requirements of clean energy. [ 8–10 ] However aqueous solutions of AB are very stable at room temperature, so it needs to be hydrolyzed quickly to produce hydrogen in the presence of catalysts. Although noble metal nanoparticles (especially Pt, Rh, Ru, Pd, etc.)…”

Section: Introductionmentioning

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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“…Since Xu’s group first reported Pt-, Rh-, and Pd-catalyzed H 2 generation from the dissociation and hydrolysis of NH 3 BH 3 in 2006 (eq ), NH 3 BH 3 (AB) has drawn considerable attention because of its ultrahigh H content (up to 19.6 wt %), low molecular weight, superior stability, and solubility in water and eco-friendly characteristics . Over the past few decades, a large number of catalysts, including RuPd, Ag@Pd, Pd, − Ni/ZIF-8, Ni 2 Pt/ZIF-8, CoPt, PdRu, PtPd, Rh, ,, Pt, , Au-Pd@CeO 2 , and Pd/graphene, − have been explored for H 2 production upon AB hydrolysis. − However, there is still a need for increasing the H 2 evolution rates, long-term recyclability, and turnover frequency (TOF) values of the hydrolytic dehydrogenation of NH 3 BH 3 . …”

Section: Introductionmentioning

confidence: 99%

Magnetic Co-Pd/C Nanocomposites for Hydrogen Evolution upon the Hydrolytic Dehydrogenation of NH₃BH₃, NaBH₄, and Me₂NHBH₃

Liu

2021

ACS Appl. Nano Mater.

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Owing to the high price and rareness of noble metals (including Pd, Rh, and Pt), the design and synthesis of bimetallic nanocomposites, by alloying a noble transition metal with an earth abundant and a cheap metal, for synergistically promoting hydrogen evolution are highly desirable. To meet the requirement, in this work, magnetic Co-Pd/C nanocomposites have been designed and constructed, by simply alloying Pd/C with Co, for synergistically promoting H2 evolution upon the hydrolytic dehydrogenation of NH3BH3, NaBH4, and Me2NHBH3 for the first time. Transmission electron microscopy and energy-dispersive X-ray spectroscopy have shown that magnetic Co-Pd/C nanocomposites have a possible core/shell structure. The Co-Pd/C has shown superior catalytic performance in H2 evolution, with the turnover frequency (TOF) of 263.39 mol(H2)·molcat –1·min–1, which is 10 times as that of Pd/C (only 26.97 mol(H2)·molcat –1·min–1). Gratifyingly, Co-Pd/C also provides 20-fold and 7-fold TOF values as that of Pd/C in the hydrolysis of NaBH4 and Me2NHBH3, respectively. Indeed, the activation energy of the hydrolytic dehydrogenation of NH3BH3 has been significantly decreased from 57.92 kJ/mol (Pd/C) to 35.70 kJ/mol (Co-Pd/C).

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Assembly and superior performance of palladium nano-catalysts anchored to a magnetic konjac glucomannan-graphene oxide hybrid for H2 generation from ammonia borane

Cited by 23 publications

References 37 publications

Magnetically isolable Pd(0) nanoparticles supported on surface functionalized Fe₃O₄ for hydrogen generation via ammonia borane hydrolysis

Magnetically isolable Pd(0) nanoparticles supported on surface functionalized Fe₃O₄ for hydrogen generation via ammonia borane hydrolysis

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

Magnetic Co-Pd/C Nanocomposites for Hydrogen Evolution upon the Hydrolytic Dehydrogenation of NH₃BH₃, NaBH₄, and Me₂NHBH₃

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Assembly and superior performance of palladium nano-catalysts anchored to a magnetic konjac glucomannan-graphene oxide hybrid for H2 generation from ammonia borane

Cited by 23 publications

References 37 publications

Magnetically isolable Pd(0) nanoparticles supported on surface functionalized Fe3O4 for hydrogen generation via ammonia borane hydrolysis

Magnetically isolable Pd(0) nanoparticles supported on surface functionalized Fe3O4 for hydrogen generation via ammonia borane hydrolysis

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

Magnetic Co-Pd/C Nanocomposites for Hydrogen Evolution upon the Hydrolytic Dehydrogenation of NH3BH3, NaBH4, and Me2NHBH3

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Magnetically isolable Pd(0) nanoparticles supported on surface functionalized Fe₃O₄ for hydrogen generation via ammonia borane hydrolysis

Magnetically isolable Pd(0) nanoparticles supported on surface functionalized Fe₃O₄ for hydrogen generation via ammonia borane hydrolysis

Magnetic Co-Pd/C Nanocomposites for Hydrogen Evolution upon the Hydrolytic Dehydrogenation of NH₃BH₃, NaBH₄, and Me₂NHBH₃