Facile Fabrication of Rhodium/Nanodiamond Hybrid as Advanced Catalyst toward Hydrogen Production from Ammonia–Borane

Hydrogen generation through ammonia–borane (AB) hydrolysis has been regarded as one of the most promising pathways to tap renewable green energy. The design and synthesis of highly effective catalysts toward hydrogen production from aqueous AB is of paramount significance. Here, the facile synthesis of Rh nanoparticles (NPs) immobilized on nanodiamond (nano-DA) and concomitant AB hydrolysis to produce hydrogen was successfully achieved. The in situ generated Rh/nano-DA exhibited excellent catalytic activity toward AB hydrolysis, with a high turnover frequency (TOF) value of 729.4 min−1 at 25 °C and a low activation energy of 25.6 kJ mol−1. Moreover, the catalyst could be reused four times. The unique properties of DA with abundant oxygen-containing groups enable the homogeneous distribution of small and surface-clean Rh NPs on the nano-DA surface, which can supply abundant accessible active sites for hydrogen evolution from AB hydrolysis. This study demonstrated that nano-DA can be applied as an ideal matrix to deposit efficient Rh nanocatalyst toward hydrogen evolution reaction.

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Light-triggered hydrogen production from anhydrous alkaline methanol on a multi-layer device

10.21203/rs.3.rs-116810/v1 ◽

2020 ◽

Author(s):

Yiou Wang ◽

En-Ping Yao ◽

Jacek Stolarczyk ◽

Jochen Feldmann

Keyword(s):

Hydrogen Production ◽

Active Sites ◽

Hydrogen Generation ◽

Anhydrous Methanol ◽

Layer System ◽

High Turnover ◽

Proton Source ◽

Hole Scavenger ◽

Slurry System ◽

Alkaline Conditions

Abstract Hydrogen production from methanol has attracted substantial interest because of the clean combustion of hydrogen and the convenience of methanol in storage and transportation. However, it requires high-temperature and high-pressure conditions to reform methanol with water to hydrogen with high turnover frequency (TOF, e.g. 104 moles of hydrogen per mole of Pt per hour). Here we show that hydrogen can be produced from anhydrous alkaline methanol with a remarkable TOF of 1.8×106 moles of hydrogen per mole of Pt per hour on a light-triggered multi-layer system under mild conditions. The performance is attributed to the use of anhydrous methanol as both the proton source and the hole scavenger in alkaline conditions. In contrast to a slurry system, we show that the proposed multi-layer system avoids particle aggregation, and it leads to the effective utilization of methanol, light and Pt active sites. This notable performance steps forward to the practical light-triggered hydrogen generation.

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In situ Synthesis of Nickel-Dimethylglyoxime/Black Phosphorus Nanorods for Photocatalytic Hydrogen Production from Water Splitting

NANO ◽

10.1142/s1793292020501258 ◽

2020 ◽

Vol 15 (10) ◽

pp. 2050125

Author(s):

Hui’e Wang

Keyword(s):

Hydrogen Production ◽

Water Splitting ◽

Active Sites ◽

Hydrogen Generation ◽

Hollow Structure ◽

Black Phosphorus ◽

In Situ Growth ◽

Photocatalytic Hydrogen Production ◽

Reaction Cycles

Here, a novel material consisting of black phosphorus (BP) and nickel-dimethylglyoxime nanorods was successfully prepared via a facile in situ calcination strategy, which possesses efficient catalytic activity for hydrogen production from water splitting. The reason for this phenomenon was explained by a series of characterization technologies such as SEM, TEM, XRD, UV–Vis, XPS and photoelectrochemical. We demonstrated that the fast e− transport channels were provided by the formed hollow structure of C@Ni-D nanorods, the highly exposed active sites on C@Ni-BP nanorods benefiting from the direct in situ growth of BP, the resulted synergetic effects of C@Ni-D-2 nanorods and BP achieved a better performance of photocatalytic hydrogen production from water splitting. The optimal hydrogen generation of C@Ni-BP-2 nanorods could reach up to 600[Formula: see text][Formula: see text]mol within 180[Formula: see text]min and the rate of hydrogen production did not decrease significantly after four repeated reaction cycles. This work may offer new direction in situ growth of novel catalysts for achieving highly efficient hydrogen production.

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Plasmonic hot electron enhanced MoS2photocatalysis in hydrogen evolution

Nanoscale ◽

10.1039/c4nr07303g ◽

2015 ◽

Vol 7 (10) ◽

pp. 4482-4488 ◽

Cited By ~ 124

Author(s):

Yimin Kang ◽

Yongji Gong ◽

Zhijian Hu ◽

Ziwei Li ◽

Ziwei Qiu ◽

...

Keyword(s):

Hydrogen Production ◽

Hydrogen Evolution ◽

Green Energy ◽

Doping Effect ◽

Hot Electron ◽

Electron Doping

Green energy sees the light: an accumulative enhancement of MoS2photocatalysis in hydrogen production is achieved by the plasmonic hot electron doping effect.

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Ru Nanoparticles Embedded in Cubic Mesoporous Silica SBA-1 as Highly Efficient Catalysts for Hydrogen Generation from Ammonia Borane

Catalysts ◽

10.3390/catal10030267 ◽

2020 ◽

Vol 10 (3) ◽

pp. 267 ◽

Cited By ~ 1

Author(s):

Juti Rani Deka ◽

Diganta Saikia ◽

Kuo-Shu Hsia ◽

Hsien-Ming Kao ◽

Yung-Chin Yang ◽

...

Keyword(s):

Mesoporous Silica ◽

Active Sites ◽

Hydrogen Generation ◽

Ammonia Borane ◽

High Dispersion ◽

High Catalytic Activity ◽

Porous Support ◽

H2 Generation ◽

Ru Nanoparticles ◽

Cubic Mesoporous

Cubic mesoporous silica SBA-1 functionalized with carboxylic acid (-COOH), namely S1B-C10, is used as a support to fabricate and confine Ru nanoparticles (NPs). The uniformly dispersed organic functional groups in SBA-1 are beneficial in attracting Ru cations, and as a result, homogenously distributed small sized Ru NPs are formed within the mesopores. The prepared Ru@S1B-C10 is utilized as a catalyst for H2 generation from the hydrolysis of ammonia borane (AB). The Ru@S1B-C10 catalyst demonstrates high catalytic activity for H2 generation (202 mol H2 molRu min−1) and lower activation energy (24.13 kJ mol−1) due to the small sized Ru NPs with high dispersion and the support’s interconnected mesoporous structure. The nanosized Ru particles provide abundant active sites for the catalytic reaction to take place, while the interconnected porous support facilitates homogenous transference and easy dispersal of AB molecules to the active sites. The catalyst demonstrates good recycle ability since the accumulation and leaking of NPs throughout catalysis can be effectively prevented by the support.

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Cuboid Ni2 P as a Bifunctional Catalyst for Efficient Hydrogen Generation from Hydrolysis of Ammonia Borane and Electrocatalytic Hydrogen Evolution

Chemistry - An Asian Journal ◽

10.1002/asia.201701302 ◽

2017 ◽

Vol 12 (22) ◽

pp. 2967-2972 ◽

Cited By ~ 14

Author(s):

Yeshuang Du ◽

Chao Liu ◽

Gongzhen Cheng ◽

Wei Luo

Keyword(s):

Hydrogen Evolution ◽

Hydrogen Generation ◽

Ammonia Borane ◽

Bifunctional Catalyst ◽

Hydrolysis Of

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Hydroxyapatite-nanosphere supported ruthenium(0) nanoparticle catalyst for hydrogen generation from ammonia-borane solution: kinetic studies for nanoparticle formation and hydrogen evolution

RSC Advances ◽

10.1039/c4ra03213f ◽

2014 ◽

Vol 4 (55) ◽

pp. 28947-28955 ◽

Cited By ~ 22

Author(s):

Halil Durak ◽

Mehmet Gulcan ◽

Mehmet Zahmakiran ◽

Saim Ozkar ◽

Murat Kaya

Keyword(s):

Hydrogen Evolution ◽

Hydrogen Generation ◽

Active Catalyst ◽

Kinetic Studies ◽

Ammonia Borane ◽

Highly Active ◽

Solution Kinetic ◽

Hydrolysis Of ◽

Nanoparticle Catalyst

Nanohydroxyapatite-supported ruthenium(0) nanoparticles formed in situ during the hydrolysis of AB have been found to be a highly active catalyst in the generation of hydrogen from aqueous AB solution.

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A Ni2P nanosheet array integrated on 3D Ni foam: an efficient, robust and reusable monolithic catalyst for the hydrolytic dehydrogenation of ammonia borane toward on-demand hydrogen generation

Journal of Materials Chemistry A ◽

10.1039/c6ta05604k ◽

2016 ◽

Vol 4 (32) ◽

pp. 12407-12410 ◽

Cited By ~ 68

Author(s):

Chun Tang ◽

Lisi Xie ◽

Kunyang Wang ◽

Gu Du ◽

Abdullah M. Asiri ◽

...

Keyword(s):

Activation Energy ◽

Hydrogen Production ◽

Hydrogen Generation ◽

Ammonia Borane ◽

Turnover Frequency ◽

Ni Foam ◽

Monolithic Catalyst ◽

On Demand ◽

Nanosheet Array

A Ni2P nanosheet array integrated on Ni foam performs as a catalyst for on-demand hydrogen production from ammonia borane with an initial turnover frequency of 42.3 mol(H2) mol(Ni2P)−1 min−1 and an activation energy of 44.0 kJ mol−1.

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Acetylenic bond-driven efficient hydrogen production of a graphdiyne based catalyst

Materials Chemistry Frontiers ◽

10.1039/d1qm00064k ◽

2021 ◽

Vol 5 (5) ◽

pp. 2247-2254

Author(s):

Ling Bai ◽

Zhiqiang Zheng ◽

Zhongqiang Wang ◽

Feng He ◽

Yurui Xue ◽

...

Keyword(s):

Hydrogen Production ◽

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Active Sites ◽

High Hydrogen ◽

Acetylenic Bond ◽

Reaction Performance

3D acetylenic bonds distributing makes tetraphenyl methane substitute graphdiyne (TPM-GDY) show more active sites and high hydrogen evolution reaction performance.

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Synthesizing the High Surface Area g-C3N4 for Greatly Enhanced Hydrogen Production

Catalysts ◽

10.3390/catal11070832 ◽

2021 ◽

Vol 11 (7) ◽

pp. 832

Author(s):

Chengfei Wang ◽

Tongxin Han ◽

Chang Xin ◽

Hui Miao

Keyword(s):

Photocatalytic Activity ◽

Hydrogen Production ◽

Surface Area ◽

Hydrogen Evolution ◽

Redox Reaction ◽

Active Sites ◽

High Surface ◽

High Surface Area ◽

Ambient Atmosphere ◽

Diffusion Distance

Adjusting the structure of g-C3N4 to significantly enhance its photocatalytic activity has attracted considerable attention. Herein, a novel, sponge-like g-C3N4 with a porous structure is prepared from the annealing of protonated melamine under N2/H2 atmosphere (PH-CN). Compared to bulk g-C3N4 via calcination of melamine under ambient atmosphere (B-CN), PH-CN displays thinner nanosheets and a higher surface area (150.1 m2/g), which is a benefit for shortening the diffusion distance of photoinduced carriers, providing more active sites, and finally favoring the enhancement of the photocatalytic activity. Moreover, it can be clearly observed from the UV-vis spectrum that PH-CN displays better performance for harvesting light compared to B-CN. Additionally, the PH-CN is prepared with a larger band gap of 2.88 eV with the Fermi level and conduction band potential increased and valence band potential decreased, which could promote the water redox reaction. The application experiment results show that the hydrogen evolution rate on PH-CN was nearly 10 times higher than that of B-CN, which was roughly 4104 μmol h−1 g−1. The method shown in this work provides an effective approach to adjust the structure of g-C3N4 with considerable photocatalytic hydrogen evolution activity.

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