Applications of Nanoporous Materials in Sensors and Catalysis

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Energy and Catalysis".

Deadline for manuscript submissions: closed (20 December 2024) | Viewed by 1174

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Guest Editor
Department of Fine Chemistry, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
Interests: mesoporous silica nanoparticles; hollow structure; fluorescent nanoparticles; mesoporous organosilica; mesoporous metal/metal oxide; adsorption; catalysis; drug release
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Special Issue Information

Dear Colleagues,

Since the discovery of MCM-41-type ordered mesoporous silica by scientists from Mobil in 1992, considerable progress has been made in the synthesis of mesoporous materials with various structures and components. In particular, mesoporous silica and metal oxides have received a great amount of attention in heterogeneous catalysis and various types of sensors. Pioneers in this field have attempted enhance the performance of various catalytic systems, including those in the oil industry as well as in photocatalysis- and hydrogen-related systems. Although various synthesis methods have been reported, durability—for example, hydrothermal, chemical, and mechanical stability—remains a challenging barrier preventing the industrial application of mesoporous materials.

This Special Issue will present a self-contained set of papers on new synthesis methods and versatile applications of mesoporous materials, providing an exploration of current state-of-the-art research in this cutting-edge field, particularly in the areas of catalysis and sensors. These submissions can take the form of mini-reviews, original research papers, or short communications describing new breakthroughs.

All researchers in the field are invited to submit their manuscripts for publication in this Special Issue.

Prof. Dr. Eun-Bum Cho
Guest Editor

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Keywords

  • mesoporous silica
  • mesoporous organosilica
  • mesoporous metal
  • oxide mesoporous
  • aerogel catalysis
  • sensor photocatalysis
  • electrocatalysis hydrogen
  • CO2 adsorption

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Published Papers (1 paper)

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Research

21 pages, 5741 KiB  
Article
Bimetallic NiCo Nanoparticles Embedded in Organic Group Functionalized Mesoporous Silica for Efficient Hydrogen Production from Ammonia Borane Hydrolysis
by Juti Rani Deka, Diganta Saikia, Ning-Fang Lu, Chieh-Yu Chen, Hsien-Ming Kao and Yung-Chin Yang
Nanomaterials 2024, 14(22), 1818; https://doi.org/10.3390/nano14221818 - 13 Nov 2024
Viewed by 916
Abstract
In this study, bimetallic NiCo nanoparticles (NPs) were encapsulated within the mesopores of carboxylic acid functionalized mesoporous silica (CMS) through the chemical reduction approach. Both NaBH4 and NH3BH3 were used as reducing agents to reduce the metal ions simultaneously. [...] Read more.
In this study, bimetallic NiCo nanoparticles (NPs) were encapsulated within the mesopores of carboxylic acid functionalized mesoporous silica (CMS) through the chemical reduction approach. Both NaBH4 and NH3BH3 were used as reducing agents to reduce the metal ions simultaneously. The resulting composite was used as a catalyst for hydrolysis of ammonia borane (NH3BH3, AB) to produce H2. The bimetallic NiCo NPs supported on carboxylic group functionalized mesoporous silica, referred to as NixCo100−x@CMS, exhibited significantly higher catalytic activity for AB hydrolysis compared to their monometallic counterparts. The remarkable activity of NixCo100−x@CMS could be ascribed to the synergistic contributions of Ni and Co, redox reaction during the hydrolysis, and the fine-tuned electronic structure. The catalytic performance of the NixCo100−x@CMS nanocatalyst was observed to be dependent on the composition of Ni and Co. Among all the compositions investigated, Ni40Co60@CMS demonstrated the highest catalytic activity, with a turn over frequency (TOF) of 18.95 molH2min−1molcatalyst−1 and H2 production rate of 8.0 L min−1g−1. The activity of Ni40Co60@CMS was approximately three times greater than that of Ni@CMS and about two times that of Co@CMS. The superior activity of Ni40Co60@CMS was attributed to its finely-tuned electronic structure, resulting from the electron transfer of Ni to Co. Furthermore, the nanocatalyst exhibited excellent durability, as the carboxylate group in the support provided a strong metal–support interaction, securely anchoring the NPs within the mesopores, preventing both agglomeration and leakage. Full article
(This article belongs to the Special Issue Applications of Nanoporous Materials in Sensors and Catalysis)
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