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Title: Synthesis and Characterization of Mesoporous Silica Nanoparticles Loaded with Pt Catalysts

Abstract

Coating the catalyst with a nanoporous layer has been demonstrated to be an effective approach to improve catalyst stability. Herein, we systematically investigate two types of core-shell mesoporous silica nanoparticles with a platinum nanocatalyst using a variety of characterization methods. One of the mesoporous particles has a unique amine ring structure in the middle of a shell (Ring-mSiO2/Pt-5.0/SiO2), and the other one has no ring structure (mSiO2/Pt-5.0/SiO2). Brunauer–Emmett–Teller/Barrett–Joyner–Halenda (BET/BJH) presented a similar surface area for both particles, and the pore size was 2.4 nm. Ultra-Small-Angle X-ray Scattering (USAXS)/ Small-Angle X-ray Scattering (SAXS) showed the size of mSiO2/Pt-5.0/SiO2 and Ring-mSiO2/Pt-5.0/SiO2 were 420 nm and 272 nm, respectively. It also showed that the ring structure was 30 nm above the silica core. Using high-resolution Transmission Electron Microscopy (TEM), it was found that the platinum nanoparticles are loaded evenly on the surface of the silica. In situ SAXS heating experiments and Thermogravimetric Analysis (TGA) indicated that the mSiO2/Pt-5.0/SiO2 were more stable during the high temperature, while the Ring-mSiO2/Pt-5.0/SiO2 had more change in the particle.

Authors:
 [1];  [2];  [3];  [4];  [3]; ORCiD logo [5]
+ Show Author Affiliations
  1. Northern Illinois Univ., DeKalb, IL (United States)
  2. Iowa State Univ., Ames, IA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Iowa State Univ., Ames, IA (United States); Ames Lab., Ames, IA (United States)
  5. Northern Illinois Univ., DeKalb, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Energy Frontier Research Center (United States). Institute for Cooperative Upcycling of Plastics (iCOUP)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
OSTI Identifier:
1846431
Alternate Identifier(s):
OSTI ID: 1880291
Report Number(s):
Is-J-10,710
Journal ID: ISSN 2073-4344
Grant/Contract Number:  
AC02-07CH11358; AC02-06CH11357; AC-02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Catalysts
Additional Journal Information:
Journal Volume: 12; Journal Issue: 2; Journal ID: ISSN 2073-4344
Publisher:
MDPI
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; mesoporous materials; USXAS/SXAS

Citation Formats

Lyu, Xingyi, Wu, Xun, Liu, Yuzi, Huang, Wenyu, Lee, Byeongdu, and Li, Tao. Synthesis and Characterization of Mesoporous Silica Nanoparticles Loaded with Pt Catalysts. United States: N. p., 2022. Web. doi:10.3390/catal12020183.
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Lyu, Xingyi, Wu, Xun, Liu, Yuzi, Huang, Wenyu, Lee, Byeongdu, & Li, Tao. Synthesis and Characterization of Mesoporous Silica Nanoparticles Loaded with Pt Catalysts. United States. https://doi.org/10.3390/catal12020183
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Lyu, Xingyi, Wu, Xun, Liu, Yuzi, Huang, Wenyu, Lee, Byeongdu, and Li, Tao. Mon . "Synthesis and Characterization of Mesoporous Silica Nanoparticles Loaded with Pt Catalysts". United States. https://doi.org/10.3390/catal12020183. https://www.osti.gov/servlets/purl/1846431.
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@article{osti_1846431,
title = {Synthesis and Characterization of Mesoporous Silica Nanoparticles Loaded with Pt Catalysts},
author = {Lyu, Xingyi and Wu, Xun and Liu, Yuzi and Huang, Wenyu and Lee, Byeongdu and Li, Tao},
abstractNote = {Coating the catalyst with a nanoporous layer has been demonstrated to be an effective approach to improve catalyst stability. Herein, we systematically investigate two types of core-shell mesoporous silica nanoparticles with a platinum nanocatalyst using a variety of characterization methods. One of the mesoporous particles has a unique amine ring structure in the middle of a shell (Ring-mSiO2/Pt-5.0/SiO2), and the other one has no ring structure (mSiO2/Pt-5.0/SiO2). Brunauer–Emmett–Teller/Barrett–Joyner–Halenda (BET/BJH) presented a similar surface area for both particles, and the pore size was 2.4 nm. Ultra-Small-Angle X-ray Scattering (USAXS)/ Small-Angle X-ray Scattering (SAXS) showed the size of mSiO2/Pt-5.0/SiO2 and Ring-mSiO2/Pt-5.0/SiO2 were 420 nm and 272 nm, respectively. It also showed that the ring structure was 30 nm above the silica core. Using high-resolution Transmission Electron Microscopy (TEM), it was found that the platinum nanoparticles are loaded evenly on the surface of the silica. In situ SAXS heating experiments and Thermogravimetric Analysis (TGA) indicated that the mSiO2/Pt-5.0/SiO2 were more stable during the high temperature, while the Ring-mSiO2/Pt-5.0/SiO2 had more change in the particle.},
doi = {10.3390/catal12020183},
journal = {Catalysts},
number = 2,
volume = 12,
place = {United States},
year = {Mon Jan 31 00:00:00 EST 2022},
month = {Mon Jan 31 00:00:00 EST 2022}
}
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https://doi.org/10.3390/catal12020183
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