scholarly journals Tailorable synthesis of heterogeneous enzyme–copper nanobiohybrids and their application in the selective oxidation of benzene to phenol

2020 ◽  
Vol 10 (1) ◽  
pp. 196-206 ◽  
Author(s):  
Noelia Losada-García ◽  
Alba Rodríguez-Otero ◽  
Jose M. Palomo
Keyword(s):  
Selective Oxidation ◽  
Aqueous Media ◽  
Copper Nanoparticle ◽  
New Strategy ◽  
Oxidation Of Benzene

A new strategy has been developed for the tailor-made synthesis of copper nanoparticle (CuNPs)-enzyme biohybrids in aqueous media for selective benzene monohydroxylation.

scholarly journals Tailorable Aqueous-Media Synthesis of Heterogeneous Copper Nanoparticles Hybrids and Application in Selective Oxidation of Benzene

2019 ◽  
Author(s):  
Noelia Losada-Garcia ◽  
Alba Rodriguez-Otero ◽  
Jose M Palomo
Keyword(s):  
Hydrogen Peroxide ◽  
Selective Oxidation ◽  
Copper Nanoparticles ◽  
Room Temperature ◽  
Aqueous Media ◽  
Green Technology ◽  
Direct Oxidation ◽  
Experimental Conditions ◽  
Copper Species ◽  
Oxidation Of Benzene

Novel heterogeneous nanocatalysts has been synthesized in aqueous media at multimilligram scale for highly selective direct oxidation of benzene to phenol in aqueous media. The synthesis of a novel biohybrids containing copper nanoparticles (CuNPs) by an efficient and green technology have been described. The methodology involves the combination of an enzyme and a copper salt in aqueous media at room temperature. It was possible to control the copper species and nanoparticle size depending on the experimental conditions, e.g. pH, reducing step, amount of enzyme, obtaining novel heterogeneous nanobiohybrids containing exclusively Cu (0)NPs, Cu2O (Cu(i)) NPs or very crystalline Cu3(PO4)2 (Cu (ii)) NPs. Very small dispersed copper nanoparticles were formed in all cases (from 3 to 15 nm). These novel CuNPs biohybrids were evaluated as catalyst in the selective oxidation of benzene to phenol in water at 30ºC using hydrogen peroxide as oxidant, obtaining excellent yields and selectivity of phenol (>80% yield, >95% selectivity). <br>

scholarly journals Tailorable Aqueous-Media Synthesis of Heterogeneous Copper Nanoparticles Hybrids and Application in Selective Oxidation of Benzene

2019 ◽  
Author(s):  
Noelia Losada-Garcia ◽  
Alba Rodriguez-Otero ◽  
Jose M Palomo
Keyword(s):  
Hydrogen Peroxide ◽  
Selective Oxidation ◽  
Copper Nanoparticles ◽  
Room Temperature ◽  
Aqueous Media ◽  
Green Technology ◽  
Direct Oxidation ◽  
Experimental Conditions ◽  
Copper Species ◽  
Oxidation Of Benzene

Novel heterogeneous nanocatalysts has been synthesized in aqueous media at multimilligram scale for highly selective direct oxidation of benzene to phenol in aqueous media. The synthesis of a novel biohybrids containing copper nanoparticles (CuNPs) by an efficient and green technology have been described. The methodology involves the combination of an enzyme and a copper salt in aqueous media at room temperature. It was possible to control the copper species and nanoparticle size depending on the experimental conditions, e.g. pH, reducing step, amount of enzyme, obtaining novel heterogeneous nanobiohybrids containing exclusively Cu (0)NPs, Cu2O (Cu(i)) NPs or very crystalline Cu3(PO4)2 (Cu (ii)) NPs. Very small dispersed copper nanoparticles were formed in all cases (from 3 to 15 nm). These novel CuNPs biohybrids were evaluated as catalyst in the selective oxidation of benzene to phenol in water at 30ºC using hydrogen peroxide as oxidant, obtaining excellent yields and selectivity of phenol (>80% yield, >95% selectivity). <br>

Influence of Starting Solution in Preparation of V2O5/TiO2Catalysts for Selective Oxidation of Benzene

1996 ◽  
Vol 25 (12) ◽  
pp. 1115-1116 ◽  
Author(s):  
Atsushi Satsuma ◽  
Sakae Takenaka ◽  
Tsunehiro Tanaka ◽  
Shigeru Nojima ◽  
Yoshiya Kera ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Starting Solution ◽  
Oxidation Of Benzene

An efficient and recyclable copper nano-catalyst for the selective oxidation of benzene to p-benzoquinone (p-BQ) using H2O2(aq) in CH3CN

2019 ◽  
Vol 370 ◽  
pp. 332-346 ◽  
Author(s):  
Wondemagegn Hailemichael Wanna ◽  
Ravirala Ramu ◽  
Damodar Janmanchi ◽  
Yi-Fang Tsai ◽  
Natarajan Thiyagarajan ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Nano Catalyst ◽  
Oxidation Of Benzene

Selective oxidation of benzene to phenol with N2O by unsupported and supported FePO4 catalysts

2003 ◽  
Vol 244 (1) ◽  
pp. 11-17 ◽  
Author(s):  
Tong Ren ◽  
Liang Yan ◽  
Xiaoming Zhang ◽  
Jishuan Suo
Keyword(s):  
Selective Oxidation ◽  
Oxidation Of Benzene

Facile construction of leaf-like WO3 nanoflakes decorated on g-C3N4 towards efficient oxidation of alcohols under mild conditions

2018 ◽  
Vol 42 (20) ◽  
pp. 16523-16532 ◽  
Author(s):  
Cai Xu ◽  
Xiaozhong Wang ◽  
Gang Xu ◽  
Yingqi Chen ◽  
Liyan Dai
Keyword(s):  
Selective Oxidation ◽  
Aqueous Media ◽  
Mild Conditions ◽  
Oxidation Of Alcohols

Selective oxidation of aryl and alkyl alcohols with H2O2 in aqueous media catalyzed by a well-defined WO3/g-C3N4 composite.

scholarly journals High Performance of Simple Organic Phosphorescence Host-Guest Materials

2020 ◽  
Author(s):  
Yunsheng Wang ◽  
Heqi Gao ◽  
Jie Yang ◽  
Manman Fang ◽  
Dan Ding ◽  
...  
Keyword(s):  
High Performance ◽  
High Efficiency ◽  
Aqueous Media ◽  
Theoretical Research ◽  
Long Afterglow ◽  
Afterglow Time ◽  
New Strategy ◽  
Long Lifetime ◽  
First Time ◽  
Design Guidance

<p><b>The study of purely organic room-temperature phosphorescence (RTP) has drawn </b><b>increasing attention </b><b>because of its considerable theoretical research and practical application </b><b>value</b><b>. Currently, organic RTP materials with both high efficiency (<i>Ф</i><sub>P</sub> > 20%) and a long lifetime (<i>τ</i><sub>P</sub> > 10 s) in air are still </b><b>scarce due to</b><b> the lack of related design guidance. Here, we </b><b>report</b><b> a new strategy to increase the phosphorescence performance of organic materials by integrating the RTP host and RTP guest in one doping system to form </b><b>a </b><b>triplet exciplex. With these materials, the high-contrast </b><b>labelling</b><b> of tumours in living mice and encrypted patterns in thermal printing are both successfully realized for the first time</b><b> by</b><b> taking </b><b>advantage of both</b><b> the long afterglow time (up to 25 min in aqueous media) and high phosphorescence efficiency (43%).</b></p>

Photocatalytic selective oxidation of benzene to phenol in water over layered double hydroxide: A thermodynamic and kinetic perspective

2020 ◽  
Vol 388 ◽  
pp. 124248 ◽  
Author(s):  
Jiaxin Li ◽  
Yanqi Xu ◽  
Zhongzhen Ding ◽  
Abdul Hanif Mahadi ◽  
Yufei Zhao ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Layered Double Hydroxide ◽  
Double Hydroxide ◽  
Oxidation Of Benzene
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