Synergism of ultrafine RuCo alloy nanoparticles on graphite carbon nitride for efficient ammonia borane hydrolysis

2021 ◽  
Author(s):  
Yating He ◽  
Ziqian Wang ◽  
Mingyue Mao ◽  
Qianggen Li ◽  
Guangyin Fan
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Ammonia Borane ◽  
Alloy Nanoparticles ◽  
Bimetallic Alloy ◽  
Catalytic Sites

Ru-based bimetallic alloy nanoparticles (NPs) have been demonstrated as efficiently catalytic sites for hydrogen evolution from ammonia borane (AB) hydrolysis, but their facile syntheses with ultrafine sizes and superior activity...

scholarly journals Hydrogen Production from Ammonia Borane over PtNi Alloy Nanoparticles Immobilized on Graphite Carbon Nitride

Catalysts ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1009 ◽  
Author(s):  
Mingya Zhang ◽  
Xue Xiao ◽  
Yan Wu ◽  
Yue An ◽  
Lixin Xu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
High Performance ◽  
Carbon Nitride ◽  
Heterogeneous Catalysts ◽  
Chemical Reduction ◽  
Ammonia Borane ◽  
Superior Performance ◽  
Alloy Nanoparticles ◽  
Total Turnover ◽  
Ptni Alloy

Graphite carbon nitride (g-C3N4) supported PtNi alloy nanoparticles (NPs) were fabricated via a facile and simple impregnation and chemical reduction method and explored their catalytic performance towards hydrogen evolution from ammonia borane (AB) hydrolysis dehydrogenation. Interestingly, the resultant Pt0.5Ni0.5/g-C3N4 catalyst affords superior performance, including 100% conversion, 100% H2 selectivity, yielding the extraordinary initial total turnover frequency (TOF) of 250.8 molH2 min−1 (molPt)−1 for hydrogen evolution from AB at 10 °C, a relatively low activation energy of 38.09 kJ mol−1, and a remarkable reusability (at least 10 times), which surpass most of the noble metal heterogeneous catalysts. This notably improved activity is attributed to the charge interaction between PtNi NPs and g-C3N4 support. Especially, the nitrogen-containing functional groups on g-C3N4, serving as the anchoring sites for PtNi NPs, may be beneficial for becoming a uniform distribution and decreasing the particle size for the NPs. Our work not only provides a cost-effective route for constructing high-performance catalysts towards the hydrogen evolution of AB but also prompts the utilization of g-C3N4 in energy fields.

scholarly journals Hydrogenation Production from Ammonia Borane over PtNi Alloy Nanoparticles Immobilized on Graphite Carbon Nitride

2019 ◽  
Author(s):  
Mingya Zhang ◽  
Xue Xiao ◽  
Yan Wu ◽  
Yue An ◽  
Lixin Xu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
High Performance ◽  
Carbon Nitride ◽  
Heterogeneous Catalysts ◽  
Chemical Reduction ◽  
Ammonia Borane ◽  
Superior Performance ◽  
Alloy Nanoparticles ◽  
Total Turnover ◽  
Ptni Alloy

Graphite carbon nitride (g-C3N4) supported PtNi alloy nanoparticles (NPs) were fabricated via a facile and simple impregnation and chemical reduction method and explored their catalytic performance towards hydrogen evolution from ammonia borane (AB). Interestingly, the resultant Pt0.5Ni0.5/g-C3N4 catalyst affords superior performance, including 100% conversion, 100% H2 selectivity, yielding the extraordinary initial total turnover frequency (TOF) of 250.8 molH2 min-1 (molPt)-1 for hydrogen evolution from AB at 10 °C, a relatively low activation energy of 38.09 kJ mol−1, and a remarkable reusability (at least 10 times), which surpass most of the noble metal heterogeneous catalysts. This notably improved activity is attributed to the charge interaction between PtNi NPs and g-C3N4 support. Especially, the nitrogen-containing functional groups on g-C3N4, serving as the anchoring sites for PtNi NPs, may be beneficial for becoming a uniform distribution and decreasing the particle size for the NPs. Our work not only provides a cost-effective route for constructing high-performance catalysts towards the hydrogen evolution of AB but also prompts the utilization of g-C3N4 in energy fields.

Dissolution and Performing Homogeneous Photocatalysis of Polymeric Carbon Nitride

2018 ◽  
Author(s):  
Chaofeng Huang ◽  
Jing Wen ◽  
Yanfei Shen ◽  
Fei He ◽  
Li Mi ◽  
...  
Keyword(s):  
Conjugated Polymer ◽  
Carbon Nitride ◽  
Heterogeneous Catalysts ◽  
Methane Sulfonic Acid ◽  
Environment Friendly ◽  
The Poor ◽  
Catalytic Sites ◽  
Homogeneous Photocatalysis ◽  
Polymeric Carbon ◽  
First Time

<a></a><a>As a metal-free conjugated polymer, carbon nitride (CN) has attracted tremendous attention as heterogeneous (photo)catalysts. </a><a></a><a>By following prototype of enzymes, making all catalytic sites of accessible via homogeneous reactions is a promising approach toward maximizing CN activity, but hindered due to </a><a></a><a>the poor insolubility of CN</a>. Herein, we report the dissolution of CN in environment-friendly methane sulfonic acid and the homogeneous photocatalysis driven by CN for the first time with the activity boosted up to 10-times, comparing to the heterogeneous counterparts. Moreover, facile recycling and reusability, the <a>hallmark</a> of heterogeneous catalysts, were kept for the homogeneous CN photocatalyst via reversible precipitation using poor solvents. It opens new vista of CN in homogeneous catalysis and offers a successful example of polymeric catalysts in bridging gaps of homo/heterogeneous catalysis.

Tuning of the Oxygen Species Linker on the Surface of Polymeric Carbon Nitride to Promote the Photocatalytic Hydrogen Evolution Performance

ChemSusChem ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3605-3613 ◽  
Author(s):  
Qin Lei ◽  
Rongzhi Chen ◽  
Yurong Zhao ◽  
Huanyu Chen ◽  
Xinxin Long ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Carbon Nitride ◽  
Oxygen Species ◽  
Photocatalytic Hydrogen Evolution ◽  
Polymeric Carbon
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