In situ intercalation of Au nanoparticles and magnetic γ-Fe2O3 in the walls of MCM-41 with abundant void defects for highly efficient reduction of 4-nitrophenol and organic dyes

2018 ◽  
Vol 47 (47) ◽  
pp. 16862-16875 ◽  
Author(s):  
Shijian Zhou ◽  
Weiming Jin ◽  
Yun Ding ◽  
Bo Shao ◽  
Bangbang Wang ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Organic Dyes ◽  
Assembly Process ◽  
Highly Efficient ◽  
Efficient Reduction ◽  
Void Defects ◽  
Mcm 41

Au nanoparticles and magnetic γ-Fe2O3 are intercalated in situ in the walls of MCM-41, and abundant void defects appeared during the assembly process.

Starfish-like Au–CdS hybrids for the highly efficient photocatalytic degradation of organic dyes

RSC Advances ◽  
2014 ◽  
Vol 4 (80) ◽  
pp. 42441-42444 ◽  
Author(s):  
Xinyu Wang ◽  
Yulong Ying ◽  
Jiahuan Lei ◽  
Pan Hu ◽  
Xinsheng Peng
Keyword(s):  
Visible Light ◽  
Photocatalytic Degradation ◽  
Au Nanoparticles ◽  
Organic Dyes ◽  
Highly Efficient ◽  
Self Assembling

A novel starfish-like Au–CdS heterostructures are constructed by a simple self-assembling method with centered Au nanoparticles, and exhibit highly efficient visible light photodegradation of organic dyes.

Synthesis of Au-SiO2 Composite Nanospheres and Their Catalytic Activity

2016 ◽  
Vol 16 (4) ◽  
pp. 3821-3826 ◽  
Author(s):  
Wang Dexuan ◽  
Li Guian ◽  
Han Qingyan ◽  
Wang Ziqiang ◽  
Pan Liping ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Photoelectron Spectroscopy ◽  
Au Nanoparticles ◽  
Catalytic Properties ◽  
Organic Dyes ◽  
Chemical Elements ◽  
X Ray ◽  
Transmission Electron ◽  
Environmentally Friendly Approach

We report a simple and environmentally friendly approach to the synthesis of Au-SiO2 composite nanospheres. Our method presents a route for the decoration of preformed amine functionalized SiO2 nanospheres by in situ formation of Au nanoparticles at three different concentrations of Au precursor (HAuCl4). Herein, the silane coupling agent (KH-550) is used as an intermediary to connect the Au nanoparticles to the surfaces of the SiO2 nanospheres, which helps avoid the aggregation of Au nanoparticles. The crystal structure, chemical elements, morphology and catalytic properties of the Au-SiO2 composite nanospheres were analyzed by transmission electron microscopy (TEM), X-Ray powder diffraction (XRD), UV-vis-spectrophotometer (UV-vis) and X-ray photoelectron spectroscopy (XPS). The analytical results demonstrate that the Au nanoparticles (4–9 nm) were homogeneously distributed on the surface of the SiO2 nanospheres, which had a good FCC crystal structure. Moreover, the Au-SiO2 composite nanospheres exhibited good catalytic properties, measured by their ability to reduce organic dyes. The Au-SiO2 composite nanospheres are promising candidates for applications in catalysis and wastewater treatment.

A new Ce-doped MgAl-LDH@Au nanocatalyst for highly efficient reductive degradation of organic contaminants

2017 ◽  
Vol 5 (14) ◽  
pp. 6716-6724 ◽  
Author(s):  
Kanwal Iqbal ◽  
Anam Iqbal ◽  
Alexander M. Kirillov ◽  
Bingkai Wang ◽  
Weisheng Liu ◽  
...  
Keyword(s):  
Organic Contaminants ◽  
Au Nanoparticles ◽  
Environmentally Friendly ◽  
Average Diameter ◽  
Au Nps ◽  
Highly Efficient ◽  
Reductive Degradation ◽  
New Type

A new type of convenient, environmentally friendly, and recyclable nanocatalyst (abbreviated as MgAlCe-LDH@Au) was designed and successfully assembled by loading Au nanoparticles (Au NPs; ∼3 nm average diameter) on a MgAlCe-LDH support through an in situ reduction of HAuCl4 by NaBH4.

Facile assembly of nanosheet array-like CuMgAl-layered double hydroxide/rGO nanohybrids for highly efficient reduction of 4-nitrophenol

2016 ◽  
Vol 4 (48) ◽  
pp. 18990-19002 ◽  
Author(s):  
Liguang Dou ◽  
Hui Zhang
Keyword(s):  
Layered Double Hydroxide ◽  
Aqueous Phase ◽  
Highly Efficient ◽  
Reduction Activity ◽  
Nanosheet Array ◽  
Efficient Reduction ◽  
Double Hydroxide

3D-Architectured nanosheet array-like CuMgAl-LDH/rGO hybrids assembled via a green aqueous-phase coprecipitation strategy exhibit excellent reduction activity for 4-nitrophenol due to in situ created ultrafine Cu2O particles in the reaction.

Uranyl-Anchored MCM-41 as a Highly Efficient Photocatalyst in the Oxidative Destruction of Short Chain Linear Alkanes: An in situ FTIR Study

2008 ◽  
Vol 112 (40) ◽  
pp. 15832-15843 ◽  
Author(s):  
Vidya Krishna ◽  
Valmik S. Kamble ◽  
Narendra M. Gupta ◽  
Parasuraman Selvam
Keyword(s):  
Short Chain ◽  
Oxidative Destruction ◽  
In Situ Ftir ◽  
Ftir Study ◽  
Highly Efficient ◽  
Linear Alkanes ◽  
Mcm 41

scholarly journals Highly efficient reduction of 4-nitrophenolate to 4-aminophenolate by Au/γ-Fe2O3@HAP magnetic composites

RSC Advances ◽  
2019 ◽  
Vol 9 (18) ◽  
pp. 10272-10281 ◽  
Author(s):  
Yide Xia ◽  
Ying Liu ◽  
Nannan Shi ◽  
Xungao Zhang
Keyword(s):  
Shell Structure ◽  
Au Nanoparticles ◽  
Precipitation Method ◽  
Core Shell ◽  
Magnetic Composites ◽  
The Core ◽  
Highly Efficient ◽  
Efficient Reduction ◽  
Core Shell Structure

In this article, the catalyst Au/γ-Fe2O3@hydroxyapatite (Au/γ-Fe2O3@HAP) consisting of Au nanoparticles supported on the core–shell structure γ-Fe2O3@HAP was prepared through a deposition–precipitation method.

Novel core–shell-like nanocomposites xCu@Cu2O/MgAlO-rGO through an in situ self-reduction strategy for highly efficient reduction of 4-nitrophenol

2017 ◽  
Vol 46 (45) ◽  
pp. 15836-15847 ◽  
Author(s):  
Liguang Dou ◽  
Yanna Wang ◽  
Yangguang Li ◽  
Hui Zhang
Keyword(s):  
Synergistic Effect ◽  
Core Shell ◽  
Reduction Strategy ◽  
Highly Efficient ◽  
Efficient Reduction

Novel core–shell-like nanocomposites xCu@Cu2O/MgAlO-rGO via an in situ self-reduction strategy exhibit extraordinary activity for the reduction of 4-nitrophenol upon a Cu–Cu2O–MgAlO–rGO four-phase synergistic effect.

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