In situ assembly of well-dispersed Ni nanoparticles on silica nanotubes and excellent catalytic activity in 4-nitrophenol reduction

Nanoscale ◽  
2014 ◽  
Vol 6 (19) ◽  
pp. 11181-11188 ◽  
Author(s):  
Shenghuan Zhang ◽  
Shili Gai ◽  
Fei He ◽  
Shujiang Ding ◽  
Lei Li ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Catalytic Activity ◽  
High Catalytic Activity ◽  
Ni Nanoparticles ◽  
Small Particle Size ◽  
Reduction Strategy ◽  
Nitrophenol Reduction ◽  
Nanotube Composites ◽  
Loading Amount

Ni nanoparticle/silica nanotube composites with small particle size, good dispersion and high loading amount of Ni NPs was synthesized using an in situ thermal decomposition and reduction strategy. The composite exhibited high catalytic activity and good stability in 4-NP reduction.

A cheap and efficient catalyst with ultra-high activity for reduction of 4-nitrophenol

CrystEngComm ◽  
2015 ◽  
Vol 17 (30) ◽  
pp. 5744-5750 ◽  
Author(s):  
Weicheng Pan ◽  
Shenghuan Zhang ◽  
Fei He ◽  
Shili Gai ◽  
Yanbo Sun ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Particle Size ◽  
Catalytic Activity ◽  
Small Particle ◽  
Ni Nanoparticles ◽  
Small Particle Size ◽  
Efficient Catalyst ◽  
Nitrophenol Reduction ◽  
Loading Amount

Ni/SBA-15 catalyst with ultra-small particle size (7 nm), good dispersion, and ultra-high loading amount (57.4%) of Ni nanoparticles was prepared by a unique in situ thermal decomposition and reduction route. It exhibits excellent catalytic activity and stability for 4-nitrophenol reduction.

Synthesis of Ni@MWCNTs Magnetic Nanocatalysts and their Catalytic Activity towards 4-Nitrophenol Reduction

2012 ◽  
Vol 531 ◽  
pp. 358-361 ◽  
Author(s):  
Ming Mei Zhang ◽  
Qian Sun ◽  
Ji Min Xie
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
Average Particle Size ◽  
Chemical Vapor ◽  
High Catalytic Activity ◽  
Average Particle ◽  
Ni Nanoparticles ◽  
Nitrophenol Reduction ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

A well-dispersed Ni nanoparticles on multi-walled carbon nanotubes (Ni@MWCNTs) was prepared by chemical vapor deposition (CVD) method using a vacuum quartz tube furnace at the temperature of 600°C. The scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD) were performed to characterize the synthesized catalyst. It shows an unfirom dispersion of Ni nanoparticles on MWCNTs with the average particle size of 8.6 nm. The as synthesized catalyst was applied in a redox reaction of 4-nitrophenol, which showed very high catalytic activity, stability and well conversion. The catalyst can be easily separated due to the magnetical performance

Uniform Ni/SiO2@Au magnetic hollow microspheres: rational design and excellent catalytic performance in 4-nitrophenol reduction

Nanoscale ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 7025-7032 ◽  
Author(s):  
Shenghuan Zhang ◽  
Shili Gai ◽  
Fei He ◽  
Yunlu Dai ◽  
Peng Gao ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Catalytic Activity ◽  
Rational Design ◽  
Au Nanoparticles ◽  
Catalytic Performance ◽  
Hollow Microspheres ◽  
Nitrophenol Reduction ◽  
Excellent Catalytic Performance

Uniform Ni/SiO2 magnetic hollow microspheres were prepared by an in situ thermal decomposition and reduction route. Tiny Au nanoparticles (5 nm) were linked to Ni/SiO2 microspheres. The as-prepared Ni/SiO2@Au catalysts exhibited excellent catalytic activity for 4-nitrophenol reduction.

A ternary Cu2O–Cu–CuO nanocomposite: a catalyst with intriguing activity

2016 ◽  
Vol 45 (7) ◽  
pp. 3139-3150 ◽  
Author(s):  
Anup Kumar Sasmal ◽  
Soumen Dutta ◽  
Tarasankar Pal
Keyword(s):  
Catalytic Activity ◽  
High Catalytic Activity ◽  
Nitrophenol Reduction

The exceptionally high catalytic activity of in situ generated ternary Cu2O–Cu–CuO nanocomposite obtained from Cu2O nanoparticles for 4-nitrophenol reduction is described.

Facile in situ redox synthesis of Au@Fe2O3 nanocomposites with multifunctional catalytic activity

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Zhuo Chen ◽  
Xiao-jun Wei ◽  
Jun Liu ◽  
Xiao-meng Lv
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Hybrid Composites ◽  
Synthesis Method ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Oxidation Of Benzyl Alcohol ◽  
Nitrophenol Reduction ◽  
Dispersed Gold

AbstractUsing freshly synthesized Fe(OH)2 matrix and HAuCl4 as precursor, l-lysine as stabilizer and linker, Au nanoparticles coated onto γ-Fe2O3 substrate were in-situ synthesized at room temperature. The Au@Fe2O3 hybrid composites with small highly dispersed gold particles (∼3 nm) exhibited high catalytic activity towards 4-nitrophenol reduction and the oxidation of benzyl alcohol. The results indicated the rate constant for 4-nitrophenol reduction was 5.3 × 10−2 s−1, and displayed efficient catalytic performance in terms of turnover number (TOF) of 134.8 h−1 for the oxidation of benzyl alcohol at 90 ± 1 °C. Furthermore, the facial electrode potential-driven in situ synthesis method paved the way of other metal nanoparticles over Fe2O3.

Chitosan modified Cu2O nanoparticles with high catalytic activity for p-nitrophenol reduction

2019 ◽  
Vol 480 ◽  
pp. 601-610 ◽  
Author(s):  
Yan Guo ◽  
Mingming Dai ◽  
Zhixu Zhu ◽  
Yuqi Chen ◽  
Hui He ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Catalytic Activity ◽  
Nitrophenol Reduction ◽  
Cu2o Nanoparticles

A metal–organic framework with in situ generated low-coordinate binuclear Cu(i) units as a highly effective catalyst for photodriven hydrogen production

2020 ◽  
Vol 56 (49) ◽  
pp. 6700-6703
Author(s):  
Ning-Yu Huang ◽  
Hai He ◽  
Hao Li ◽  
Pei-Qin Liao ◽  
Xiao-Ming Chen
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Production ◽  
Synergistic Effect ◽  
Metal Organic Framework ◽  
High Catalytic Activity ◽  
Binuclear Copper ◽  
Metal Organic ◽  
Cu Ions ◽  
Organic Framework

Here, we report a metal–organic framework featuring a binuclear copper unit, showing extraordinarily high catalytic activity (102.8 mmol g−1 h−1) for photodriven H2 generation, which is attributed to the synergistic effect between the two Cu ions.

scholarly journals New gold standard: weakly capped infant Au nanoclusters with record high catalytic activity for 4-nitrophenol reduction and hydrogen generation from an ammonia borane–sodium borohydride mixture

2020 ◽  
Vol 2 (11) ◽  
pp. 5384-5395
Author(s):  
Dinabandhu Patra ◽  
Srinivasa Rao Nalluri ◽  
Hui Ru Tan ◽  
Mohammad S. M. Saifullah ◽  
Ramakrishnan Ganesan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Citric Acid ◽  
Solid State ◽  
Gold Standard ◽  
Active Sites ◽  
Hydrogen Generation ◽  
High Catalytic Activity ◽  
Au Nanoclusters ◽  
Nitrophenol Reduction ◽  
Rapid Dissolution

Active sites are preserved in the citric acid-capped Au nanoclusters prepared in solid state. In water, the rapid dissolution of citric acid allows the reactants to easily access the active sites of infant Au nanoclusters leading to faster catalysis.

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