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.

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.

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.

High Catalytic Activity and Stability of Hexaaluminate Catalysts for N2O Decomposition

2013 ◽  
Vol 320 ◽  
pp. 665-669
Author(s):  
Chao Zhang ◽  
Yong Ji Song ◽  
Feng Hua Shi ◽  
Cui Qing Li ◽  
Hong Wang
Keyword(s):  
Catalytic Activity ◽  
Decomposition Reaction ◽  
Precipitation Method ◽  
High Catalytic Activity ◽  
Structure And Properties ◽  
Active Components ◽  
Co Precipitation ◽  
Hexaaluminate Catalysts

In this paper, hexaaluminate oxides LaMAl12O19-σwere prepared by using M=Cu ,Ce and Zn as active components to substitute Al in the hexaaluminate lattice by co-precipitation method. The structure and properties of LaMAl11O19-σcatalyst was characterized with XRD and BET. The results showed LaCuAl11O19-σexhibited significant high catalytic activity for the decomposition reaction of N2O. Under the simulated in situ condition, LaCuAl11O19-σalso indicated significant catalytic activity and stability, with N2O conversion of 90% at 635°C.

A facile construction of Au nanoparticles on a copolymer ligand brushes modified graphene oxide nanoplatform with excellent catalytic properties

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 64937-64945 ◽  
Author(s):  
Yajiao Song ◽  
Jianhua Lü ◽  
Bingxin Liu ◽  
Changli Lü
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Au Nanoparticles ◽  
Catalytic Properties ◽  
High Catalytic Activity ◽  
Au Nps ◽  
Modified Graphene Oxide ◽  
Modified Graphene ◽  
Copolymer Brush

Au NPs were generated via in situ reduction on copolymer brush P(OEGMA-co-MQ) functionalized GO. MQ units in the brushes as capping agents could stabilize the Au NPs. The Au NPs–GO hybrid exhibited high catalytic activity for the reduction of 4-NP.

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