Interfacial electron transfer promotes photo-catalytic reduction of 4-nitrophenol by Au/Ag2O nanoparticles confined in dendritic mesoporous silica nanospheres

2019 ◽  
Vol 9 (20) ◽  
pp. 5786-5792 ◽  
Author(s):  
Tai-Qun Yang ◽  
Tian-Yu Ning ◽  
Bo Peng ◽  
Bing-Qian Shan ◽  
Yu-Xin Zong ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Mesoporous Silica ◽  
Metal Oxides ◽  
Heterogeneous Catalysts ◽  
Catalytic Reduction ◽  
Interfacial Electron Transfer ◽  
Silica Nanospheres ◽  
Ag2o Nanoparticles ◽  
Mesoporous Silica Nanospheres

Manipulating the electron transfer in composite metals or/and metal oxides on the nanoscale is crucial for the development of improved heterogeneous catalysts.

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.

Carborane based mesoporous nanoparticles as a potential agent for BNCT

2021 ◽  
Vol 5 (6) ◽  
pp. 2771-2776
Author(s):  
Yong Wang ◽  
Yanwen Xu ◽  
Jingying Yang ◽  
Xiaoyan Qiu ◽  
Nan Li ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Pancreatic Tumors ◽  
Silica Nanospheres ◽  
Mesoporous Nanoparticles ◽  
Mesoporous Silica Nanospheres

A novel BNCT system targeting pancreatic tumors was created by covalently hybridizing carborane with dendritic mesoporous silica nanospheres.

Direct conversion of cellulose to ethyl levulinate catalysed by modified fibrous mesoporous silica nanospheres in a co-solvent system

2021 ◽  
Vol 45 (12) ◽  
pp. 5526-5539
Author(s):  
Zhi Zhang ◽  
Zhihang Huang ◽  
Hong Yuan
Keyword(s):  
Mesoporous Silica ◽  
Solvent System ◽  
Direct Conversion ◽  
Reaction Yield ◽  
Silica Nanospheres ◽  
Ethyl Levulinate ◽  
System A ◽  
System P ◽  
Mesoporous Silica Nanospheres

A KCC-1/Al–SO3H catalyst with Si/Al = 5 was prepared to directly catalyse the synthesis of ethyl levulinate from cellulose in an ethanol/toluene co-solvent system. A reaction yield of 28.8 mol% was achieved after 6 h at 200 °C.

Multicolor (Vis-NIR) mesoporous silica nanospheres linked with lanthanide complexes using 2-(5-bromothiophen)imidazo[4,5-f][1,10]phenanthroline for in vitro bioimaging

2015 ◽  
Vol 44 (1) ◽  
pp. 237-246 ◽  
Author(s):  
Ying Liu ◽  
Lining Sun ◽  
Jinliang Liu ◽  
Yu-Xin Peng ◽  
Xiaoqian Ge ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Lanthanide Complexes ◽  
Cell Imaging ◽  
Silica Nanospheres ◽  
Phenanthroline Ligand ◽  
Mesoporous Silica Nanospheres

Using the modified phenanthroline ligand, the multicolor mesoporous silica nanospheres linked with lanthanide complexes were synthesized and characterized, and the application for cell imaging has been studied.

Cooperative Catalysis by General Acid and Base Bifunctionalized Mesoporous Silica Nanospheres

2005 ◽  
Vol 44 (12) ◽  
pp. 1826-1830 ◽  
Author(s):  
Seong Huh ◽  
Hung-Ting Chen ◽  
Jerzy W. Wiench ◽  
Marek Pruski ◽  
Victor S.-Y. Lin
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanospheres ◽  
Cooperative Catalysis ◽  
General Acid ◽  
Acid And Base ◽  
Mesoporous Silica Nanospheres

Copper-containing monodisperse mesoporous silica nanospheres by a smart one-step approach

2008 ◽  
pp. 3118 ◽  
Author(s):  
Gaëlle Derrien ◽  
Clarence Charnay ◽  
Jerzy Zajac ◽  
Deborah J. Jones ◽  
Jacques Rozière
Keyword(s):  
Mesoporous Silica ◽  
Silica Nanospheres ◽  
One Step ◽  
Mesoporous Silica Nanospheres
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