Co-MOF-74 based Co3O4/cellulose derivative membrane as dual-functional catalyst for colorimetric detection and degradation of phenol

2021 ◽  
pp. 118548
Author(s):  
Chen Hou ◽  
Linhui Fu ◽  
Yang Wang ◽  
Wenqiang Chen ◽  
Fang Chen ◽  
...  
Keyword(s):  
Colorimetric Detection ◽  
Cellulose Derivative ◽  
Dual Functional

scholarly journals Sensitive colorimetric detection of ochratoxin A by a dual-functional Au/Fe3O4 nanohybrid-based aptasensor

RSC Advances ◽  
2019 ◽  
Vol 9 (66) ◽  
pp. 38590-38596
Author(s):  
Rong Huang ◽  
Lu Lu Xiong ◽  
Hui Hui Chai ◽  
Jing Jing Fu ◽  
Zhisong Lu ◽  
...  
Keyword(s):  
Ochratoxin A ◽  
Colorimetric Detection ◽  
Dual Functional ◽  
Colorimetric Aptasensor

A novel colorimetric aptasensor based on a Au/Fe3O4 nanohybrid was developed to detect ochratoxin A (OTA).

A new coumarin based dual functional chemosensor for colorimetric detection of Fe3+ and fluorescence turn-on response of Zn2+

2016 ◽  
Vol 236 ◽  
pp. 719-731 ◽  
Author(s):  
Nayan Roy ◽  
Abhijit Dutta ◽  
Paritosh Mondal ◽  
Pradip C. Paul ◽  
T. Sanjoy Singh
Keyword(s):  
Colorimetric Detection ◽  
Turn On ◽  
Dual Functional ◽  
Fluorescence Turn On

Synthesis of dual-functional Ag/Au nanoparticles based on the decreased cavitating rate under alkaline conditions and the colorimetric detection of mercury(ii) and lead(ii)

2018 ◽  
Vol 6 (28) ◽  
pp. 7557-7567 ◽  
Author(s):  
Ting-Yang Xing ◽  
Jing Zhao ◽  
Guo-Jun Weng ◽  
Jian-Jun Li ◽  
Jian Zhu ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Colorimetric Detection ◽  
Core Shell ◽  
Specific Detection ◽  
Shell Nanoparticles ◽  
Dual Functional ◽  
Alkaline Conditions ◽  
Core Shell Nanoparticles

Synthesis of Ag/Au core–shell nanoparticles with two LSPR modes and the specific detection of Hg2+and Pb2+.

A dual functional probe for “turn-on” fluorescence response of Pb2+and colorimetric detection of Cu2+based on a rhodamine derivative in aqueous media

2015 ◽  
Vol 44 (39) ◽  
pp. 17326-17334 ◽  
Author(s):  
Min Li ◽  
Xiu-Juan Jiang ◽  
Hui-Hui Wu ◽  
Hong-Lin Lu ◽  
Hai-Yang Li ◽  
...  
Keyword(s):  
Fluorescence Enhancement ◽  
Colorimetric Detection ◽  
Aqueous Media ◽  
Fluorescence Response ◽  
Rhodamine Derivative ◽  
Turn On ◽  
Dual Functional ◽  
Colorimetric Response

A dual functional probeLexhibited a selective fluorescence enhancement response to Pb2+and a sensitive colorimetric response to Cu2+in aqueous media.

A dual functional probe: sensitive fluorescence response to H2S and colorimetric detection for SO32−

RSC Advances ◽  
2016 ◽  
Vol 6 (88) ◽  
pp. 85529-85537 ◽  
Author(s):  
Sheng Chen ◽  
Chao Ma ◽  
Mao-Sen Yuan ◽  
Wenji Wang ◽  
Dong-En Wang ◽  
...  
Keyword(s):  
Colorimetric Detection ◽  
Fluorescence Response ◽  
Dual Functional

In this study, we developed a new dual functional probe,NIR-DNP, for discriminative detection of H2S and SO32−.

Dual-Function, Light Switchable Cobalt Catalysis via Active Site Metamorphosis

2019 ◽  
Author(s):  
Enrico Bergamaschi ◽  
Frédéric Beltran ◽  
Christopher Teskey
Keyword(s):  
Visible Light ◽  
Active Site ◽  
Catalytic Site ◽  
Dual Function ◽  
Catalytic Systems ◽  
Hydride Complex ◽  
Dual Functional ◽  
Multiple Processes ◽  
Olefin Migration

<p></p><p></p><p>Switchable catalysis offers opportunities to control the rate or selectivity of a reaction <i>via</i> a stimulus such as pH or light. However, few examples of switchable catalytic systems that can facilitate multiple processes exist. Here we report a rare example of such dual-functional, switchable catalysis. Featuring an easily prepared, bench-stable cobalt(I) hydride complex in conjunction with pinacolborane, we can completely alter the reaction outcome between two widely employed transformations – olefin migration and hydroboration – with visible light as the sole trigger. This dichotomy arises from ligand photodissociation which leads to metamorphosis of the active catalytic site, resulting in divergent mechanistic pathways.</p><p></p><p></p>

Directed Evolution of P450 Fatty Acid Decarboxylases via High-Throughput Screening Towards Improved Catalytic Activity

2019 ◽  
Author(s):  
Huifang Xu ◽  
Weinan Liang ◽  
Linlin Ning ◽  
Yuanyuan Jiang ◽  
Wenxia Yang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Fatty Acid ◽  
Directed Evolution ◽  
High Throughput ◽  
High Throughput Screening ◽  
Colorimetric Detection ◽  
Screening Method ◽  
Random Mutagenesis ◽  
Direct Production ◽  
Consumption Activity

P450 fatty acid decarboxylases (FADCs) have recently been attracting considerable attention owing to their one-step direct production of industrially important 1-alkenes from biologically abundant feedstock free fatty acids under mild conditions. However, attempts to improve the catalytic activity of FADCs have met with little success. Protein engineering has been limited to selected residues and small mutant libraries due to lack of an effective high-throughput screening (HTS) method. Here, we devise a catalase-deficient <i>Escherichia coli</i> host strain and report an HTS approach based on colorimetric detection of H<sub>2</sub>O<sub>2</sub>-consumption activity of FADCs. Directed evolution enabled by this method has led to effective identification for the first time of improved FADC variants for medium-chain 1-alkene production from both DNA shuffling and random mutagenesis libraries. Advantageously, this screening method can be extended to other enzymes that stoichiometrically utilize H<sub>2</sub>O<sub>2</sub> as co-substrate.

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