Network-Like Platinum Nanosheets Enabled by a Calorific-Effect-Induced-Fusion Strategy for Enhanced Catalytic Hydrogenation Performance

In this paper, we report the construction of network-like platinum (Pt) nanosheets based on Pt/reduced graphite oxide (Pt/rGO) hybrids by delicately utilizing a calorific-effect-induced-fusion strategy. The tiny Pt species first catalyzed the H2-O2 combination reaction. The released heat triggered the combustion of the rGO substrate under the assistance of the Pt species catalysis, which induced the fusion of the tiny Pt species into a network-like nanosheet structure. The loading amount and dispersity of Pt on rGO are found to be crucial for the successful construction of network-like Pt nanosheets. The as-prepared products present excellent catalytic hydrogenation activity and superior stability towards unsaturated bonds such as olefins and nitrobenzene. The styrene can be completely converted into phenylethane within 60 min. The turnover frequency (TOF) value of network-like Pt nanosheets is as high as 158.14 h−1, which is three times higher than that of the home-made Pt nanoparticles and among the highest value of the support-free bimetallic catalysts ever reported under similar conditions. Furthermore, the well dispersibility and excellent aggregation resistance of the network-like structure endows the catalyst with excellent recyclability. The decline of conversion could be hardly identified after five times recycling experiments.

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Pt nanoparticles embedded on reduced graphite oxide with excellent electrocatalytic properties

Applied Surface Science ◽

10.1016/j.apsusc.2016.05.152 ◽

2016 ◽

Vol 386 ◽

pp. 96-102 ◽

Cited By ~ 15

Author(s):

Gengan Saravanan ◽

Subramanian Mohan

Keyword(s):

Graphite Oxide ◽

Pt Nanoparticles ◽

Electrocatalytic Properties ◽

Reduced Graphite Oxide

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Renewable Cyclopentanol From Catalytic Hydrogenation-Rearrangement of Biomass Furfural Over Ruthenium-Molybdenum Bimetallic Catalysts

Frontiers in Bioengineering and Biotechnology ◽

10.3389/fbioe.2020.615235 ◽

2020 ◽

Vol 8 ◽

Author(s):

Shihang Meng ◽

Yujing Weng ◽

Xiaolong Wang ◽

Hongxing Yin ◽

Zhenfei Wang ◽

...

Keyword(s):

Catalytic Hydrogenation ◽

Selective Hydrogenation ◽

Bimetallic Catalysts ◽

Bimetallic Catalyst ◽

Catalytic Performance ◽

Fine Chemicals ◽

Product Selectivity ◽

Rearrangement Product ◽

Hydrogenation Activity ◽

Rearrangement Reaction

Biomass furfural-like compounds are chemicals that cannot be extracted from fossil materials, through which a large number of fine chemicals and fuel additives can be opened up, but one big efficiency problem during the transformation is the accumulation of oligomers. Here, we propose a novel and efficient Ru-Mo bimetallic catalyst for selective hydrogenation-rearrangement of furfural-like compounds. The result showed that an unprecedented rearrangement product selectivity of 89.1% to cyclopentanol was achieved under an optimized reaction condition over a 1%Ru−2.5%Mo/CNT catalyst reduced at 600°C. Subsequent characterization suggested that the catalyst presented with weak acidity and strong hydrogenation activity for the reaction, which not only ensures the smooth hydrogenation-rearrangement reaction but also inhibits the accumulation of furan polymers. These findings provide a convenient strategy to tune the catalytic performance of Mo-based catalysts by controlling the reduction and carburization conditions, which appear to be versatile for the rearrangement of furans and similar compounds.

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CeO 2 nanowires stretch-embedded in reduced graphite oxide nanocomposite support for Pt nanoparticles as potential electrocatalyst for methanol oxidation reaction

International Journal of Hydrogen Energy ◽

10.1016/j.ijhydene.2017.07.013 ◽

2017 ◽

Vol 42 (32) ◽

pp. 20549-20559 ◽

Cited By ~ 10

Author(s):

Haitao Wang ◽

Yu Xue ◽

Baohui Zhu ◽

Jingjing Yang ◽

Liang Wang ◽

...

Keyword(s):

Methanol Oxidation ◽

Graphite Oxide ◽

Oxidation Reaction ◽

Pt Nanoparticles ◽

Methanol Oxidation Reaction ◽

Reduced Graphite Oxide

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Ru–Ni/Al2O3 bimetallic catalysts with high catalytic activity for N-propylcarbazole hydrogenation

Catalysis Science & Technology ◽

10.1039/c9cy02528f ◽

2020 ◽

Vol 10 (7) ◽

pp. 2268-2276 ◽

Cited By ~ 3

Author(s):

Chenguang Li ◽

Ming Yang ◽

Zhenjie Liu ◽

Zhenlin Zhang ◽

Ting Zhu ◽

...

Keyword(s):

Activation Energy ◽

Catalytic Activity ◽

Catalytic Hydrogenation ◽

Bimetallic Catalysts ◽

High Catalytic Activity ◽

Hydrogenation Activity

The as-prepared 5 wt% Ru2.5Ni2.5/Al2O3 catalyst shows the best catalytic hydrogenation activity for NPCZ and the lowest hydrogenation activation energy.

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Synthesis and Characterization of Reduced Graphene Oxide

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.678.56 ◽

2013 ◽

Vol 678 ◽

pp. 56-60 ◽

Cited By ~ 16

Author(s):

Cherukutty Ramakrishnan Minitha ◽

Ramasamy Thangavelu Rajendrakumar

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Graphite Oxide ◽

High Performance ◽

Structural Changes ◽

Epoxy Group ◽

Xrd Analysis ◽

Si Substrates ◽

Reduced Graphene ◽

Reduced Graphite Oxide

Reduced graphene oxide is an excellent candidate for various electronic devices such as high performance gas sensors. In this work Graphene oxide was prepared by oxidizing graphite to form graphite oxide. From XRD analysis the peak around 11.5o confirmed that the oxygen was intercalated into graphite. By using hydrazine hydrate, the epoxy group in graphite oxide was reduced then the solution of reduced graphite oxide (rGO) is exfoliated. Raman spectrum of rGO contains both G band (1580 cm-1), D band (1350 cm-1). The remarkable structural changes reveals that reduction of graphene oxide from the values of ID/IG ratio that increase from 0.727 (GO) to 1.414 (rGO). The exfoliated reduced graphite oxide solution is spin coated on to the SiO2/Si substrates.

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