Size dependence of silver nanoparticles in carboxylic acid functionalized mesoporous silica SBA-15 for catalytic reduction of 4-nitrophenol

RSC Advances ◽  
2016 ◽  
Vol 6 (42) ◽  
pp. 35167-35176 ◽  
Author(s):  
Diganta Saikia ◽  
Ya-Yang Huang ◽  
Cheng-En Wu ◽  
Hsien-Ming Kao
Keyword(s):  
Silver Nanoparticles ◽  
Carboxylic Acid ◽  
Mesoporous Silica ◽  
Size Dependence ◽  
Catalytic Reduction ◽  
Highly Active ◽  
Functionalized Mesoporous Silica

Silver nanoparticles with a size around 3 nm are formed within the mesopores of –COOH functionalized mesoporous silica SBA-15, and they are highly active in the catalytic reduction of 4-nitrophenol.

Palladium nanoparticles supported on 1,3-dicyclohexylguanidine functionalized mesoporous silica SBA-15 as highly active and reusable catalyst for the Suzuki–Miyaura cross-coupling reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (26) ◽  
pp. 20098-20107 ◽  
Author(s):  
Hojat Veisi ◽  
Abbas Amini Manesh ◽  
Neda Eivazi ◽  
Ali Reza Faraji
Keyword(s):  
Mesoporous Silica ◽  
Palladium Nanoparticles ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Reusable Catalyst ◽  
Suzuki Reactions ◽  
Highly Active ◽  
Functionalized Mesoporous Silica ◽  
Cross Coupling Reaction ◽  
Nano Catalyst

The synthesis and application of SBA-15/1,3-DCG/Pd as a novel heterogeneous and reusable nano catalyst in Suzuki reactions was described.

Ordered mesoporous silica cubic particles decorated with silver nanoparticles: a highly active and recyclable heterogeneous catalyst for the reduction of 4-nitrophenol

2019 ◽  
Vol 48 (8) ◽  
pp. 2692-2700 ◽  
Author(s):  
Hui-Tao Fan ◽  
Xue-Guo Liu ◽  
Xiao-Jing Xing ◽  
Bo Li ◽  
Kun Wang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Catalytic Activity ◽  
Mesoporous Silica ◽  
Potential Application ◽  
High Surface ◽  
High Surface Area ◽  
Ordered Mesoporous Silica ◽  
Highly Active ◽  
Ordered Mesoporous ◽  
Recyclable Heterogeneous Catalyst

An Ag–OMS-C nanocomposite with a high surface area was proposed, and its potential application for catalytic activity was highlighted.

Cage like ordered carboxylic acid functionalized mesoporous silica with enlarged pores for enzyme adsorption

2017 ◽  
Vol 52 (11) ◽  
pp. 6322-6340 ◽  
Author(s):  
Yung-Chin Yang ◽  
Juti Rani Deka ◽  
Cheng-En Wu ◽  
Cheng-Hsun Tsai ◽  
Diganta Saikia ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Mesoporous Silica ◽  
Enzyme Adsorption ◽  
Functionalized Mesoporous Silica

Multiple Silver Nanoparticles Anchored Hollow Mesoporous Silica Nanospheres by Polyacrylic Acid Aggregate Templating Approach for Catalytic Reduction of p-Nitrophenol

2018 ◽  
Vol 18 (12) ◽  
pp. 8307-8312 ◽  
Author(s):  
Peng Xu ◽  
Nannan Chen ◽  
Huan Lin ◽  
Changli Cen ◽  
Zhenguo Wu ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Mesoporous Silica ◽  
Polyacrylic Acid ◽  
Ag Nanoparticles ◽  
Catalytic Reduction ◽  
Metal Catalyst ◽  
Silica Nanospheres ◽  
One Pot ◽  
Hollow Mesoporous Silica ◽  
Mesoporous Silica Nanospheres

Anchoring metal cores inside porous shells can endow metal catalyst with high selectivity and stability. Herein, multiple silver nanoparticles were successfully anchored in hollow mesoporous silica nanospheres (Ag@HMSNs) through a facile one-pot method. Polyacrylic acid aggregates self-assembled in water/ethanol solvent were used as core templates and Ag nanoparticles captors, and hexadecyl trimethoxysilane (C16TMS) was used as the pore-making agent. The hollow cavity, encapsulated multiple Ag nanoparticles, and mesoporous silica shell of the Ag@HMSNs were confirmed by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and nitrogen sorption analysis. Just as expected, Ag nanoparticles (2–5 nm) were encapsulated in the cavity of hollow mesoporous silica nanospheres with the size of about 200 nm. The fabricated Ag@HMSNs showed excellent performance for catalytic reduction of p-nitrophenol (4-NP). Also, catalytic activity of the Ag@HMSNs for 4-NP reduction was increased with the addition amount of the pore-making agents and surface areas. The superior catalytic performance was attributed to the unique structural features of Ag@HMSNs architecture, in which the mesoporous shell provided readily accessible pathway for fast transport of reactants to the encapsulated Ag nanoparticles.

Confinement of Cu nanoparticles in the nanocages of large pore SBA-16 functionalized with carboxylic acid: enhanced activity and improved durability for 4-nitrophenol reduction

2019 ◽  
Vol 48 (23) ◽  
pp. 8227-8237 ◽  
Author(s):  
Juti Rani Deka ◽  
Mu-Hsin Lee ◽  
Diganta Saikia ◽  
Hsien-Ming Kao ◽  
Yung-Chin Yang
Keyword(s):  
Carboxylic Acid ◽  
Mesoporous Silica ◽  
Cu Nanoparticles ◽  
Highly Active ◽  
Large Pore ◽  
Enhanced Activity ◽  
Nitrophenol Reduction

Fabrication of a highly active mesoporous silica SBA-16 supported Cu nanocatalyst with superb durability for the reduction of 4-nitrophenol into 4-aminophenol.

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