From Boron Organic Polymers to <i>in situ</i> Ultrafine Nano Pd and Pt: Green Synthesis and Application for High Efficiency Hydrogen Evolution

Zhao, Xue; Fu, Yunfan; Chen, Yao; Xu, Shu‐Ran; Shen, Yu; Ding, Qiong; Liu, Wenjing; Zhang, Hai Bo; Zhou, Xiaohai

doi:10.1002/cctc.201900281

Cited by 28 publications

(8 citation statements)

References 42 publications

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“…In our strategy, the metal boron organic polymer M-BOPs-1 was synthesized (diversity based on closo -[B 12 H 12 ] interaction forces − ) first as a precursor and then annealed to obtain an NRR catalyst with boron–carbon–nitrogen-anchored nickel (S/M-BOPs-1). M-BOPs-1 includes closo -[B 12 H 12 ] 2– , 2-methylimidazole, and Ni 2+ .…”

Section: Resultsmentioning

confidence: 99%

BCN-Encapsulated Nano-nickel Synergistically Promotes Ambient Electrochemical Dinitrogen Reduction

Zhao

Yang

Kuklin

et al. 2020

ACS Appl. Mater. Interfaces

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The electricity provided by solar or wind power can drive nitrogen in the atmosphere, combining with ubiquitous water to form ammonia, and distributed production methods can alleviate the irreversible damage to the environment caused by the energy-intensive Haber−Bosch process. Here, we have designed a novel Ni-doped BCN heterojunction (S/ M-BOPs-1) as a catalyst for the electrochemical nitrogen reduction reaction (NRR). The ammonia yield rate and Faraday efficiency in NRR driven by S/ M-BOPs-1 reach up to 16.72 μg −1 h −1 cm −2 and 13.06%, respectively. Moreover, S/M-BOPs-1 still maintains high NRR activity and excellent stability after recycling for eight times and long-time operation of 12 h. Using density functional theory calculations, we reveal a possible NRR path for N 2 to NH 3 on Ni, BCN, and the S/M-BOPs-1 composite surfaces. The interaction between the BCN matrix and Ni nanoparticles promotes a synergetic effect for the electrochemical NRR efficiency due to the partial electron transfer from the Ni particles to BCN that inhibits hydrogen evolution reaction and decreases the rate-determining step on Ni surfaces toward NRR by ∼1.5 times. Therefore, efficient NRR performance can be achieved by tuning the electronic properties of non-noble metals via the formation of a heterointerface.

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Section: Resultsmentioning

confidence: 99%

BCN-Encapsulated Nano-nickel Synergistically Promotes Ambient Electrochemical Dinitrogen Reduction

Zhao

Yang

Kuklin

et al. 2020

ACS Appl. Mater. Interfaces

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“…Combining the coordination between 4,4′-bipyridine and Ni 2+ , B 12 H 12 2– could replace NO 3 – from Ni(NO 3 ) 2 ·6H 2 O effectively and strengthen the stability and hydrophobicity of BOPs@Ni 2+ , which allows BOPs@Ni 2+ to precipitate quickly from aqueous solution. It is worth mentioning that 4,4′-bipyridine and B 12 H 12 2– can effectively form boron organic polymers (BOPs) through B–H···π and B–H···H–C interactions, which is revealed by our previous research. − When Ni 2+ was converted to NiO in situ, without the support coordination between 4,4-bipyridine and Ni 2+ , the 3D BOPs@Ni 2+ framework material supported by Ni 2+ , 4,4-bipyridine, and B 12 H 12 2– was transformed into 1D BOPs@Ni framework material supported by B 12 H 12 2– and 4,4-bipyridine. This meaningful structural transition triggered by NiO loading is well-observed by field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDAX).…”

Section: Introductionmentioning

confidence: 87%

Transformation from 3D Boron Organic Polymers to 1D Nanorod Arrays: Loading Highly Dispersed Nanometal for Green Catalysis

Zhao¹,

Xiang²,

Zhang³

et al. 2019

ACS Appl. Mater. Interfaces

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The increasing global demands for eco-friendly and low-cost catalysts have propelled the advent of nanosized non-noble-metal catalysts to replace traditional noble metals. In this work, ultrafine NiO nanoparticles were prepared rapidly in situ by the strategy of transforming three-dimensional (3D) metal boron organic polymers (BOPs@Ni2+) to one-dimensional (1D) boron organic polymers (BOPs@Ni) nanorod arrays at room temperature. The 3D BOPs@Ni2+ can be quickly obtained by the interaction of 4,4′-bipyridine with Ni2+ and dodecaborate (B12H12 2–) in an aqueous solution. When Ni2+ is converted into NiO in situ, 1D BOPs@Ni nanostructure transformation from the 3D BOPs@Ni2+ framework was achieved due to the B–H···π interaction between B12H12 2– and 4,4′-bipyridine. Furthermore, BOPs@Ni exhibits high catalytic activity and rapid kinetics in the conversion of 4-nitrophenol to 4-aminophenol, and the high stability of 1D nanorod arrays guarantees the catalytic activity of BOP@Ni to barely change under recycling for at least 10 times. BOPs@Ni also exhibits good catalytic performance and high selectivity characteristics in the catalytic reduction of a series of nitrobenzene derivatives. This strategy of using BOPs@Ni2+ for loading self-supporting nanometal not only exhibits a highly efficient catalytic hydrogenation of nitrobenzene and its derivative but also provides an effective technical route for designing self-supported nanometal materials.

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“…Though the acknowledged noble metal catalysts, such as Pt, Pd, Ru, and Rh, have good d-band electron properties and obviously lead to better catalytic performance for AB hydrolysis than other non-noble metal catalysts, high price and low natural abundance limit their commercial applications. [7][8][9][10][11] Thus, catalysts based on non-noble transition metals are highly required to improve the performance for AB hydrolysis. [12][13][14] Specically, many research studies have been reported on Co NPs for hydrogen generation from AB hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

The alloy-oxide interfacial ensemble effect of a multilayer core–shell nanomotor for hydrogen generation from ammonia borane

Guan

Guo

Zhang

et al. 2022

Sustainable Energy Fuels

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From Boron Organic Polymers to in situ Ultrafine Nano Pd and Pt: Green Synthesis and Application for High Efficiency Hydrogen Evolution

Cited by 28 publications

References 42 publications

BCN-Encapsulated Nano-nickel Synergistically Promotes Ambient Electrochemical Dinitrogen Reduction

BCN-Encapsulated Nano-nickel Synergistically Promotes Ambient Electrochemical Dinitrogen Reduction

Transformation from 3D Boron Organic Polymers to 1D Nanorod Arrays: Loading Highly Dispersed Nanometal for Green Catalysis

The alloy-oxide interfacial ensemble effect of a multilayer core–shell nanomotor for hydrogen generation from ammonia borane

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