Zirconium Nanoparticles-Poly (N-isopropylacrylamide-methacrylic acid) Hybrid Microgels Decorated Graphene Sheets for Catalytic Reduction of Organic Pollutants

2021 ◽  
pp. 138915
Author(s):  
Sarmed Ali ◽  
Sayyed Junaid Ul Hassan Shah ◽  
Saba Jamil ◽  
Shamsa Bibi ◽  
Muhammad Usman Shah ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Methacrylic Acid ◽  
Catalytic Reduction ◽  
Graphene Sheets ◽  
Hybrid Microgels

scholarly journals Poly(N-isopropylacrylamide-co-methacrylic acid) microgel stabilized copper nanoparticles for catalytic reduction of nitrobenzene

2015 ◽  
Vol 33 (3) ◽  
pp. 627-634 ◽  
Author(s):  
Zahoor H. Farooqi ◽  
Zonarah Butt ◽  
Robina Begum ◽  
Shanza Rhauf Khan ◽  
Ahsan Sharif ◽  
...  
Keyword(s):  
Copper Nanoparticles ◽  
Methacrylic Acid ◽  
Catalytic Reduction ◽  
Aqueous Media ◽  
Activation Parameters ◽  
Reducing Agent ◽  
Different Temperatures ◽  
Entropy Of Activation ◽  
Micro Reactors

Abstract Poly(N-isopropylacrylamide-co-methacrylic acid) microgels [p(NIPAM-co-MAAc)] were synthesized by precipitation polymerization of N-isopropylacrylamide and methacrylic acid in aqueous medium. These microgels were characterized by dynamic light scattering and Fourier transform infrared spectroscopy. These microgels were used as micro-reactors for in situ synthesis of copper nanoparticles using sodium borohydride (NaBH4) as reducing agent. The hybrid microgels were used as catalysts for the reduction of nitrobenzene in aqueous media. The reaction was performed with different concentrations of cat­alyst and reducing agent. A linear relationship was found between apparent rate constant (kapp) and amount of catalyst. When the amount of catalyst was increased from 0.13 to 0.76 mg/mL then kapp was increased from 0.03 to 0.14 min-1. Activation parameters were also determined by performing reaction at two different temperatures. The catalytic process has been discussed in terms of energy of activation, enthalpy of activation and entropy of activation. The synthesized particles were found to be stable even after 14 weeks and showed catalytic activity for the reduction of nitrobenzene.

Urchin-like hybrid nanostructures of CuOx/Fe2O3 from Cu-mediated pyrolysis of Fe-MOFs for catalytic reduction of organic pollutants

Nanoscale ◽  
2022 ◽  
Author(s):  
Min Zhang ◽  
Aihui Cao ◽  
Heng Zhang ◽  
Yunlong Zhao ◽  
Xintai Su ◽  
...  
Keyword(s):  
Metal Oxides ◽  
Organic Pollutants ◽  
Catalytic Reduction ◽  
Hybrid Nanostructures

MOFs have been widely used as templates to design and construct catalysis materials, such as LDH, metal oxides, and carbon. Herein, we developed a Cu-mediated pyrolysis protocol for the synthesis...

Highly recyclable and ultra-rapid catalytic reduction of organic pollutants on Ag–Cu@ZnO bimetal nanocomposite synthesized via green technology

2018 ◽  
Vol 8 (5) ◽  
pp. 1123-1131 ◽  
Author(s):  
Manjari Gangarapu ◽  
Saran Sarangapany ◽  
Devipriya P. Suja ◽  
Vijaya Bhaskara Rao Arava
Keyword(s):  
Organic Pollutants ◽  
Catalytic Reduction ◽  
Green Technology

scholarly journals Fabrication of CS/GA/RGO/Pd composite hydrogels for highly efficient catalytic reduction of organic pollutants

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15091-15097 ◽  
Author(s):  
Lei Ge ◽  
Meng Zhang ◽  
Ran Wang ◽  
Na Li ◽  
Lexin Zhang ◽  
...  
Keyword(s):  
Composite Materials ◽  
Organic Pollutants ◽  
Self Assembly ◽  
Catalytic Reduction ◽  
Assembly Process ◽  
Composite Hydrogels ◽  
Highly Efficient ◽  
Potential Applications

New functional CS/GA/RGO/Pd composite hydrogels are prepared via a self-assembly process, demonstrating potential applications in catalysis as well as composite materials.

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