Ultrafine Ru nanoparticles anchored to porous g-C3N4 as efficient catalysts for ammonia borane hydrolysis

Li, Yong-Ting; Zhang, Shi-Hao; Zheng, Gengfeng; Liu, Pu; Peng, Zhikun; Zheng, Xiu-Cheng

doi:10.1016/j.apcata.2020.117511

Cited by 76 publications

(20 citation statements)

References 47 publications

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“…[43] By the way, it is difficult to accurately estimate the chemical bond of Co-N due to the similar chemical environment between Co-N x and pyridine N. In Figure 5d, XPS of Ru 3p in Ru 1 /CoPCP-1000 exhibits the peaks at 462.5 and 484.5 eV belonging to Ru-Ru (zero-valent ruthenium) and the other two peaks at 465.2 and 487.0 eV to Ru-O (O-coordinated Ru). Moreover, compared to the binding energy of Ru-Ru at 462.1 eV for Ru/NPC, [44] this peak in Ru 1 /CoPCP-1000 exhibits a shift to high binding energy by 0.4 eV, further confirming an electron transfer between Ru and Co. Moreover, the formation of Co-O and Ru-O is from the probable oxidation of samples during characterization and performance testing.…”

Section: Physicochemical Property Of Samplesmentioning

confidence: 77%

Ruthenium Supported on Cobalt‐Embedded Porous Carbon with Hollow Structure as Efficient Catalysts toward Ammonia‐Borane Hydrolysis for Hydrogen Production

Cui

Qiu

et al. 2021

Advanced Sustainable Systems

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Catalysts with high activity play an indispensable role in ammonia‐borane (AB) hydrolysis for hydrogen production. Supported catalysts are always used because proper support can effectively prevent metal particle agglomeration. In addition, the interaction between support and metal species can further enhance the catalytic activity. Herein, cobalt‐embedded porous carbon with polyhedral structure (CoPCP) is successfully synthesized by one‐step carbonization of a core‐shell structured ZIF‐8@ZIF‐67 composite. As support, Ru nanoparticles are loaded on CoPCP by in situ reduction to obtain Ru/CoPCP catalysts with a special hollow structure, effectively preventing Ru nanoparticles from agglomeration. Moreover, the existence of synergistic effect between Co metal and Ru nanoparticles in Ru/CoPCP catalyst is confirmed by a series of well‐designed control experiments. Both these factors endow the Ru/CoPCP catalyst with high activity and decent stability toward AB hydrolysis. A low activation energy (Ea = 31.25 kJ mol–1) and a high catalytic performance (turnover frequency = 243.4 molH2 molRu–1 min–1) are simultaneously achieved for Ru1/CoPCP‐1000 even with a low amount of Ru (1.88 wt%). This work represents a promising method to prepare the high‐activity catalysts with low content of noble metals for diverse applications in heterogeneous catalysis.

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Section: Physicochemical Property Of Samplesmentioning

confidence: 77%

Ruthenium Supported on Cobalt‐Embedded Porous Carbon with Hollow Structure as Efficient Catalysts toward Ammonia‐Borane Hydrolysis for Hydrogen Production

Cui

Qiu

et al. 2021

Advanced Sustainable Systems

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“…[43][44][45] The observed XPS results clearly support the absence of metallic ruthenium. [46] Along with ruthenium, the N 1s signal band of all the RuSA-mC 3 N 4 was deconvoluted into three nitrogen configurations, including pyridinic-N, pyrrolic-N, and graphitic-N respectively. [47] The main N 1s peak at 398.9 eV is attributed to the sp 2 -hybridized pyridinic-N bound to carbon atoms (CNC).…”

Section: Supporting Information)mentioning

confidence: 99%

Carbon Nitride‐Based Ruthenium Single Atom Photocatalyst for CO₂ Reduction to Methanol

Sharma

Kumar

Tomanec

et al. 2021

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With increasing concerns for global warming, the solar‐driven photocatalytic reduction of CO2 into chemical fuels like methanol is a propitious route to enrich energy supplies, with concomitant reduction of the abundant CO2 stockpiles. Herein, a novel single atom‐confinement and a strategy are reported toward single ruthenium atoms dispersion over porous carbon nitride surface. Ruthenium single atom character is well confirmed by EXAFS absorption spectrometric analysis unveiling the cationic coordination environment for the single‐atomic‐site ruthenium center, that is formed by Ru‐N/C intercalation in the first coordination shell, attaining synergism in N–Ru–N connection and interfacial carrier transfer. From time resolved fluorescence decay spectra, the average carrier lifetime of the RuSA–mC3N4 system is found to be higher compared to m‐C3N4; the fact uncovering the crucial role of single Ru atoms in promoting photocatalytic reaction system. A high yield of methanol (1500 µmol g‐1 cat. after 6 h of the reaction) using water as an electron donor and the reusability of the developed catalyst without any significant change in the efficiency represent the superior aspects for its potential application in real industrial technologies.

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“…3e), indicating that high temperature was beneficial to accelerate the collision of reactive species and thus boost the catalytic performance. 61 The corresponding rate constant was calculated by fitting the linear part of each plot and the E a for AB hydrolysis could be determined based on the Arrhenius equation (eqn (S2), ESI†). The E a of 31.5 kJ mol −1 was obtained (Fig.…”

Section: Resultsmentioning

confidence: 99%

Synergistic catalytic hydrolysis of ammonia borane to release hydrogen over AgCo@CN

Wang

et al. 2022

New J. Chem.

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Ultrafine Ru nanoparticles anchored to porous g-C3N4 as efficient catalysts for ammonia borane hydrolysis

Cited by 76 publications

References 47 publications

Ruthenium Supported on Cobalt‐Embedded Porous Carbon with Hollow Structure as Efficient Catalysts toward Ammonia‐Borane Hydrolysis for Hydrogen Production

Ruthenium Supported on Cobalt‐Embedded Porous Carbon with Hollow Structure as Efficient Catalysts toward Ammonia‐Borane Hydrolysis for Hydrogen Production

Carbon Nitride‐Based Ruthenium Single Atom Photocatalyst for CO₂ Reduction to Methanol

Synergistic catalytic hydrolysis of ammonia borane to release hydrogen over AgCo@CN

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Ultrafine Ru nanoparticles anchored to porous g-C3N4 as efficient catalysts for ammonia borane hydrolysis

Cited by 76 publications

References 47 publications

Ruthenium Supported on Cobalt‐Embedded Porous Carbon with Hollow Structure as Efficient Catalysts toward Ammonia‐Borane Hydrolysis for Hydrogen Production

Ruthenium Supported on Cobalt‐Embedded Porous Carbon with Hollow Structure as Efficient Catalysts toward Ammonia‐Borane Hydrolysis for Hydrogen Production

Carbon Nitride‐Based Ruthenium Single Atom Photocatalyst for CO2 Reduction to Methanol

Synergistic catalytic hydrolysis of ammonia borane to release hydrogen over AgCo@CN

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Product

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Carbon Nitride‐Based Ruthenium Single Atom Photocatalyst for CO₂ Reduction to Methanol