Heterostructured Cu2O@Au nanowire as dual-functional nanocomposite for environmental pollutant degradation and hydrogen peroxide sensing

2021 ◽  
Author(s):  
Yisheng Wei ◽  
Xiaobo Yuan ◽  
shen han ◽  
Chonghui Li ◽  
Zhen Li ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Environmental Pollutant ◽  
Pollutant Degradation ◽  
Dual Functional ◽  
Au Nanowire

Self-Reducing Prussian Blue on Ti3C2Tx MXene Nanosheets as a Dual-Functional Nanohybrid for Hydrogen Peroxide and Pesticide Sensing

2020 ◽  
Vol 59 (35) ◽  
pp. 15556-15564
Author(s):  
Ying He ◽  
Xitong Zhou ◽  
Liya Zhou ◽  
Xiaoning Zhang ◽  
Li Ma ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Prussian Blue ◽  
Dual Functional

scholarly journals P450BM3-Catalyzed Oxidations Employing Dual Functional Small Molecules

Catalysts ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 567 ◽  
Author(s):  
Willot ◽  
Tieves ◽  
Girhard ◽  
Urlacher ◽  
Hollmann ◽  
...  
Keyword(s):  
Amino Acids ◽  
Hydrogen Peroxide ◽  
Cytochrome P450 ◽  
Small Molecules ◽  
Bacillus Megaterium ◽  
Cytochrome P450 Monooxygenase ◽  
Oxidation Reactions ◽  
P450 Monooxygenase ◽  
Dual Functional ◽  
Catalytic Epoxidation

A set of dual functional small molecules (DFSMs) containing different amino acids has been synthesized and employed together with three different variants of the cytochrome P450 monooxygenase P450BM3 from Bacillus megaterium in H2O2-dependent oxidation reactions. These DFSMs enhance P450BM3 activity with hydrogen peroxide as an oxidant, converting these enzymes into formal peroxygenases. This system has been employed for the catalytic epoxidation of styrene and in the sulfoxidation of thioanisole. Various P450BM3 variants have been evaluated in terms of activity and selectivity of the peroxygenase reactions.

scholarly journals Furfural Oxidation with Hydrogen Peroxide Over ZSM-5 Based Micro-Mesoporous Aluminosilicates

2021 ◽  
Author(s):  
Nataliya D. Shcherban ◽  
Roman Yu. Barakov ◽  
Sergii A. Sergiienko ◽  
Kari Eränen ◽  
Johan Wärnå ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Model ◽  
Succinic Acid ◽  
Sulfated Zirconia ◽  
Template Method ◽  
Reaction Products ◽  
Mesoporous Aluminosilicates ◽  
Dual Functional

AbstractMicro-mesoporous aluminosilicates based on ZSM-5 zeolite, obtained by a dual template method, as well as in the presence of a dual-functional template (i.e. a Gemini-type surfactant), were tested in the oxidation of furfural with hydrogen peroxide. Even substantial changes in acidity and porosity of the catalysts result in minor variations of selectivity towards the desired products. Application of the synthesized zeolite-based materials in the oxidation of furfural with hydrogen peroxide leads to formation of 2(5H)-furanone (yield up to 28.5%) and succinic acid (up to 19.5%) as the main C4 reaction products. The kinetic model developed previously to treat the results for oxidation of furfural over sulfated zirconia was able to describe the data also for micro-mesoporous aluminosilicates. Graphical Abstract

Dual-functional Z-scheme CdSe/Se/BiOBr photocatalyst: Generation of hydrogen peroxide and efficient degradation of ciprofloxacin

2022 ◽  
Vol 606 ◽  
pp. 1715-1728
Author(s):  
Cuiwei Du ◽  
Shiyu Nie ◽  
Can Zhang ◽  
Tian Wang ◽  
Shizhan Wang ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Dual Functional

scholarly journals Fabrication of single Pt@Au nanowire electrodes for monitoring hydrogen peroxide released from living cells

RSC Advances ◽  
2017 ◽  
Vol 7 (70) ◽  
pp. 44552-44558 ◽  
Author(s):  
Yong Liu ◽  
Yaoyao Zhang ◽  
Hongmei Hua ◽  
Yongxin Li
Keyword(s):  
Hydrogen Peroxide ◽  
Living Cells ◽  
Au Nanowire ◽  
Replacement Technique

Single Pt@AuNWEs were fabricated by a Cu UPD/Pt redox replacement technique, and were applied to monitoring H2O2 released from living cells.

Biodegradation of groundwater pollutants by a combined culture ofMycobacterium vaccaeand aRhodococcussp.

1997 ◽  
Vol 43 (9) ◽  
pp. 841-846 ◽  
Author(s):  
Jason R. Fairlee ◽  
Brian L. Burback ◽  
Jerome J. Perry
Keyword(s):  
Environmental Pollutant ◽  
Cell Fractionation ◽  
Pollutant Degradation ◽  
Mycobacterium Vaccae ◽  
Culture Optimization ◽  
Microbial Ecosystems ◽  
Cellular Components ◽  
Groundwater Pollutant ◽  
Rhodococcus Sp ◽  
Groundwater Pollutants

The catabolism of selected groundwater pollutants by a combined culture of Mycobacterium vaccae and a Rhodococcus sp. (strain R-22) was investigated. The M. vaccae – R-22 combined culture was five times more effective in mineralizing benzene than either organism alone. Mycobacterium vaccae oxidized benzene to phenol, and R-22 catabolized the phenol to cellular components and CO2. Benzene did not support growth of M. vaccae, R-22, or the combined culture. Optimization of ratios of the two species indicated that the maximum mineralization of benzene occurred at an initial ratio of 75% M. vaccae to 25% R-22. Cell fractionation of the combined culture after mineralization of [U-14C]benzene indicated that 10% of the benzene carbon was incorporated into cell material, and of this 45% was present in protein and 20% in nucleic acids. This suggested that minimally one species could utilize the products of benzene as a nutrient source. The M. vaccae – R-22 combined culture catabolized ethylbenzene and chlorobenzene without the accumulation of phenolic intermediates, which are inhibitory to M. vaccae's ability to degrade the parent compounds. This study demonstrates that defined mixed cultures may be useful in studying the effects of environmental pollutant degradation on microbial ecosystems and mineralization of these pollutants by the ecosystem.Key words: biodegradation, groundwater pollutant, Mycobacterium vaccae, Rhodococcus sp.

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