Volume 7 Issue 6
Dec.  2022
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Article Navigation >  Green Energy&Environment  > 2022  >  7(6): 1349-1360
Jiaqin He, Dongyun Chen, Najun Li, Qingfeng Xu, Hua Li, Jinghui He, Jianmei Lu. Pt–Pd bimetallic nanoparticles anchored on uniform mesoporous MnO2 sphere as an advanced nanocatalyst for highly efficient toluene oxidation. Green Energy&Environment, 2022, 7(6): 1349-1360. doi: 10.1016/j.gee.2021.03.002
Citation: Jiaqin He, Dongyun Chen, Najun Li, Qingfeng Xu, Hua Li, Jinghui He, Jianmei Lu. Pt–Pd bimetallic nanoparticles anchored on uniform mesoporous MnO2 sphere as an advanced nanocatalyst for highly efficient toluene oxidation. Green Energy&Environment, 2022, 7(6): 1349-1360. doi: 10.1016/j.gee.2021.03.002
shu

Pt–Pd bimetallic nanoparticles anchored on uniform mesoporous MnO2 sphere as an advanced nanocatalyst for highly efficient toluene oxidation

doi: 10.1016/j.gee.2021.03.002

  • College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu, 215123, China

Funds:

The authors gratefully acknowledge the financial support provided by the National Key R&D Program of China (2017YFC0210901, 2017YFC0210906), National Natural Science Foundation of China (51573122, 21722607, 21776190), Natural Science Foundation of the Jiangsu Higher Education Institutions of China (17KJA430014, 17KJA150009), the Science and Technology Program for Social Development of Jiangsu (BE2015637) and the project supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)

  • Received date 22 December 2020, Accepted date 03 March 2021, RevRecd date 03 March 2021, Publish date 31 December 2022,
    Abstract
  • Improving catalytic performance is a yet still challenge in thermal catalytic oxidation. Herein, uniform mesoporous MnO2 nanosphere-supported bimetallic Pt–Pd nanoparticles were successfully fabricated via a SiO2 template strategy for the total catalytic degradation of volatile organic compounds at low temperature. The introduction of mesopores into the MnO2 support induces a large specific surface area and pore size, thus providing numerous accessible active sites and enhanced diffusion properties. Moreover, the addition of a secondary noble metal can adjust the Oads/Olatt molar ratios, resulting in high catalytic activity. Among them, the catalyst having a Pt/Pd molar ratio of 7:3 exhibits optimized catalytic activity at a weight hourly space velocity of 36,000 mL g-1 h-1, reaching 100% toluene oxidation at 175 °C with a lower activation energy (57.0 kJ mol-1) than the corresponding monometallic Pt or non-Pt-based catalysts (93.8 kJ mol-1 and 214.2 kJ mol-1). Our findings demonstrate that the uniform mesoporous MnO2 nanosphere-supported bimetallic Pt–Pd nanoparticles catalyst is an effective candidate for application in elimination of toluene.

     

    • • Uniform mesoporous MnO2 nanosphere-supported bimetallic Pt–Pd nanoparticles were fabricated using hard templates. • The introduction of mesopores induces a large specific surface area providing numerous accessible active sites. • The addition of a secondary noble metal can adjust the Oads/Olatt molar ratios, resulting in high catalytic activity. • The catalyst having a Pt/Pd molar ratio of 7:3 exhibits optimized activity, reaching 100% toluene oxidation at 175 °C.
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