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

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

RSC Advances ◽

10.1039/c6ra01592a ◽

2016 ◽

Vol 6 (42) ◽

pp. 35167-35176 ◽

Cited By ~ 26

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.

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Highly active enzymes immobilized in large pore colloidal mesoporous silica nanoparticles

New Journal of Chemistry ◽

10.1039/c8nj04585b ◽

2019 ◽

Vol 43 (4) ◽

pp. 1671-1680 ◽

Cited By ~ 13

Author(s):

Dorothée Gößl ◽

Helena Singer ◽

Hsin-Yi Chiu ◽

Alexandra Schmidt ◽

Martina Lichtnecker ◽

...

Keyword(s):

Catalytic Activity ◽

Carbonic Anhydrase ◽

Horseradish Peroxidase ◽

Mesoporous Silica ◽

Silica Nanoparticles ◽

Mesoporous Silica Nanoparticles ◽

Click Reactions ◽

Highly Active ◽

Large Pore ◽

Colorimetric Assays

Carbonic anhydrase and horseradish peroxidase are immobilized inside the ordered material by click reactions. Colorimetric assays prove their catalytic activity.

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Synthesis of Cu nanoparticles in mesoporous silica SBA-15 functionalized with carboxylic acid groups

Chemical Communications ◽

10.1039/c0cc04719h ◽

2011 ◽

Vol 47 (8) ◽

pp. 2288-2290 ◽

Cited By ~ 34

Author(s):

Ching-Shiun Chen ◽

Chen-Chih Chen ◽

Ching-Ting Chen ◽

Hsien-Ming Kao

Keyword(s):

Carboxylic Acid ◽

Mesoporous Silica ◽

Cu Nanoparticles ◽

Carboxylic Acid Groups

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Synthesis of Air-Stable Cu Nanoparticles Using Laser Reduction in Liquid

Nanomaterials ◽

10.3390/nano11030814 ◽

2021 ◽

Vol 11 (3) ◽

pp. 814

Author(s):

Ashish Nag ◽

Laysa Mariela Frias Batista ◽

Katharine Moore Tibbetts

Keyword(s):

Carbon Matrix ◽

Laser Pulses ◽

Femtosecond Laser Pulses ◽

Cu Nanoparticles ◽

Ambient Conditions ◽

Tem Analysis ◽

Highly Active ◽

Nitrophenol Reduction ◽

The Stability ◽

Laser Reduction

We report the synthesis of air-stable Cu nanoparticles (NPs) using the bottom-up laser reduction in liquid method. Precursor solutions of copper acetlyacetonate in a mixture of methanol and isopropyl alcohol were irradiated with femtosecond laser pulses to produce Cu NPs. The Cu NPs were left at ambient conditions and analyzed at different ages up to seven days. TEM analysis indicates a broad size distribution of spherical NPs surrounded by a carbon matrix, with the majority of the NPs less than 10 nm and small numbers of large particles up to ∼100 nm in diameter. XRD collected over seven days confirmed the presence of fcc-Cu NPs, with some amorphous Cu2O, indicating the stability of the zero-valent Cu phase. Raman, FTIR, and XPS data for oxygen and carbon regions put together indicated the presence of a graphite oxide-like carbon matrix with oxygen functional groups that developed within the first 24 h after synthesis. The Cu NPs were highly active towards the model catalytic reaction of para-nitrophenol reduction in the presence of NaBH4.

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