High surface area Au–SBA-15 and Au–MCM-41 materials synthesis: Tryptophan amino acid mediated confinement of gold nanostructures within the mesoporous silica pore walls

Selvakannan, P. R.; Mantri, Kshudiram; Tardio, James; Bhargava, Suresh K.

doi:10.1016/j.jcis.2012.12.008

Cited by 49 publications

(44 citation statements)

References 43 publications

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“…Possessing regular pore structure, uniform pore diameter and high surface area [16], they have successfully been employed The material is functionalized by anchoring organic bases at the silanol groups, thereby forming a covalent bond. Unfortunately, these organic-inorganic hybrid materials are less basic than the corresponding free organic amine molecule.…”

Section: Introductionmentioning

confidence: 99%

Catalytic behavior of surfactant-containing-MCM-41 mesoporous materials for cycloaddition of 4-nitrophenyl azide

Boukoussa

Zeghada

Ababsa

et al. 2015

Applied Catalysis A: General

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International audienceSi-MCM-41, Ga-MCM-41 and Al-MCM-41 mesoporous catalysts (with Si/Al = 80 and Si/Ga = 80) were prepared by direct synthesis under hydrothermal crystallization method using sodium aluminate or gallium sulfate and tetraethyl orthosilicate (TEOS) as aluminum or gallium and silica sources, respectively. The structural features of the materials were determined by various physico-chemical techniques such as X-ray diffraction (XRD), nitrogen sorption at 77 K, Fourier transform infrared spectroscopy (FTIR), scanning and transmission electronic microscopy (SEM, TEM) and thermogravimetric analysis ATG. The catalytic activity of the calcined and as-synthesized catalyst was evaluated through the cycloaddition reaction of 4-nitrophenyl azide with activated alkenes at room temperature under liquid-phase conditions. High yields of 1,2,3-triazole were obtained. For comparison purpose, mixtures of homogeneous and heterogeneous catalyst Et3N/M-MCM-41 (M = Al or Ga) are also tested. The catalyst was used in five consecutive experiments without important loss of activity, confirming its stability. Finally, a new method for preparing triazoles in short reaction times was developed

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Section: Introductionmentioning

confidence: 99%

Catalytic behavior of surfactant-containing-MCM-41 mesoporous materials for cycloaddition of 4-nitrophenyl azide

Boukoussa

Zeghada

Ababsa

et al. 2015

Applied Catalysis A: General

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“…The BET surface area of the MCM-41 material was measured as 1438 m 2 /g. In the literature, BET surface areas of various MCM-41 materials varied from 360 to 1218 m 2 /g [17,21,46,47]. When compared with these materials in the literature, MCM-41 prepared in this study has the highest specific surface area value.…”

Section: Physical and Structural Propertiesmentioning

confidence: 84%

Diffusion of alcohols and aromatics in a mesoporous MCM-41 material

Ergün¹,

Kocabaş²,

Yürüm³

et al. 2014

Fluid Phase Equilibria

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“…In order to employ NPs‐incorporated silica frameworks, NPs should to be localized within the condensing silica phase or between the interface of the template and the condensing silica phase during the assembly process. Hence, the charge of NP precursors likely to be reversed according to the template or silica, so that they could have the ability to bind the silica and template phase . The assembly of mesostructures is susceptible to potential changes of the synthesis conditions, therefore some strong interactions between NP precursors and mesoporous phase should be designed to strengthen the driving force for a mesostructure, e.g., hydrogen‐bond interaction and covalent‐linked strategy …”

Section: Fabrication Of a Mesoporous Sensing Interfacementioning

confidence: 99%

“…In another work, Tian et al fabricated the MCM‐41 type mesoporous silicas with small size Ag NPs highly dispersed in the framework using a one‐pot approach . Selvakannan et al synthesized the gold NPs inside the pre‐formed SBA‐15 and MCM‐41 channels and their textural properties were compared …”

Section: Fabrication Of a Mesoporous Sensing Interfacementioning

confidence: 99%

“…Hence, the charge of NP precursors likely to be reversed according to the template or silica, so that they could have the ability to bind the silica and template phase. [77] The assembly of mesostructures is susceptible to potential changes of the synthesis conditions, therefore some strong interactions between NP precursors and mesoporous phase should be designed to strengthen the driving force for a mesostructure, e.g., hydrogen-bond interaction [8] and covalent-linked strategy. [75] Guan et al functionalized the nanocrystalline silicon (ncSi) with hydride-terminated surface by hydrosilylation with triethoxysilylethylene.…”

Section: Assembly With Npsmentioning

confidence: 99%

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Interfacial Assembly of Mesoporous Silica‐Based Optical Heterostructures for Sensing Applications

Gao

Zeng

Liang

et al. 2020

Adv Funct Materials

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Functionalized mesoporous silica materials (MSMs) are extensively investigated in sensing science due to their diverse structural and optical properties including tunable pore size, modifiable surface properties, and excellent accessibility to active sites. In the last few years, great efforts have been devoted to developing modification methods for MSMs for sensing applications with augmented sensitivity, super selectivity, as well as targeting capability, and multimodal capabilities. The functional group, structure, morphology, and component levels in the assembly of heterostructures of MSMs are a key for high sensing performance. As the development of mesoporous silica‐based sensing materials progresses, diverse functional units and materials are rationally implemented into the mesoporous structures. These heterostructures can maintain the excellent structural features of mesoporous silica and the optical properties of the functional units simultaneously, which shows the advantages of photostability, design flexibility, and multifunctionality. Here, an up‐to‐date overview of the fabrication strategies, the properties, and the sensing mechanisms of optical heterostructures based on MSMs is provided. A number of crucial sensing domains, including ionic, molecules, temperature, and biological species are highlighted. Finally, the prospects and potential sensing applications of mesoporous silica‐based optical heterostructures are discussed.

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High surface area Au–SBA-15 and Au–MCM-41 materials synthesis: Tryptophan amino acid mediated confinement of gold nanostructures within the mesoporous silica pore walls

Cited by 49 publications

References 43 publications

Catalytic behavior of surfactant-containing-MCM-41 mesoporous materials for cycloaddition of 4-nitrophenyl azide

Catalytic behavior of surfactant-containing-MCM-41 mesoporous materials for cycloaddition of 4-nitrophenyl azide

Diffusion of alcohols and aromatics in a mesoporous MCM-41 material

Interfacial Assembly of Mesoporous Silica‐Based Optical Heterostructures for Sensing Applications

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