scholarly journals Mussel-Inspired Magnetic Nanoflowers as an Effective Nanozyme and Antimicrobial Agent for Biosensing and Catalytic Reduction of Organic Dyes

ACS Omega ◽  
2020 ◽  
Vol 5 (30) ◽  
pp. 18766-18777 ◽  
Author(s):  
Mahsa Mohammad ◽  
Fatemeh Ahmadpoor ◽  
Seyed Abbas Shojaosadati
Keyword(s):  
Antimicrobial Agent ◽  
Catalytic Reduction ◽  
Organic Dyes

Fe3O4 Nanoparticles Coated with EDTA and Ag Nanoparticles for the Catalytic Reduction of Organic Dyes from Wastewater

2019 ◽  
Vol 2 (8) ◽  
pp. 5310-5319 ◽  
Author(s):  
Hafiz Muhammad Adeel Sharif ◽  
Asif Mahmood ◽  
Hao-Yi Cheng ◽  
Ridha Djellabi ◽  
Jafar Ali ◽  
...  
Keyword(s):  
Fe3o4 Nanoparticles ◽  
Ag Nanoparticles ◽  
Catalytic Reduction ◽  
Organic Dyes

scholarly journals Green Synthesis of Silver and Gold Nanoparticles via Sargassum serratifolium Extract for Catalytic Reduction of Organic Dyes

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 347
Author(s):  
Beomjin Kim ◽  
Woo Chang Song ◽  
Sun Young Park ◽  
Geuntae Park
Keyword(s):  
Gold Nanoparticles ◽  
Green Synthesis ◽  
Catalytic Reduction ◽  
Organic Dyes ◽  
Low Cost ◽  
Inorganic Nanoparticles ◽  
X Ray ◽  
Selected Area Electron Diffraction ◽  
Transmission Electron ◽  
Sargassum Serratifolium

The green synthesis of inorganic nanoparticles (NPs) using bio-materials has attained enormous attention in recent years due to its simple, eco-friendly, low-cost and non-toxic nature. In this work, silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) were synthesized by the marine algae extract, Sargassum serratifolium (SS). The characteristic studies of bio-synthesized SS-AgNPs and SS-AuNPs were carried out by using ultraviolet–visible (UV–Vis) absorption spectroscopy, dynamic light scattering (DLS), high-resolution transmission electron microscope (HR-TEM), selected area electron diffraction (SAED), energy-dispersive X-ray spectroscopy (EDX), X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Phytochemicals in the algae extract, such as meroterpenoids, acted as a capping agent for the NPs’ growth. The synthesized Ag and Au NPs were found to have important catalytic activity for the degradation of organic dyes, including methylene blue, rhodamine B and methyl orange. The reduction of dyes by SS-AgNPs and -AuNPs followed the pseudo-first order kinetics.

Catalytic Reduction Performance of Carboxylated Alginic Acid Derivatives

2021 ◽  
Author(s):  
Raed H. Althomali ◽  
Khalid A. Alamry ◽  
Mahmoud Hussein Abdo ◽  
Shams H. Abdel-Hafez
Keyword(s):  
Metal Complexes ◽  
Metal Ion ◽  
Alginic Acid ◽  
Catalytic Reduction ◽  
Organic Dyes ◽  
Reduction Process ◽  
Spectroscopic Techniques ◽  
Reduction Behavior ◽  
Long Time ◽  
Ft Ir

Abstract In this study, the catalytic reduction behavior of carboxylated alginic acid derivatives has been investigated against the harmful organic dyes including Methyl Orange (MO) and Congo Red (CR). Alginic acid was firstly oxidized through an easy addition of KMnO4 as an oxidizing agent. A carboxylated alginic acid (CAA) has been interacted with selected metal ions (Sn, Fe, Ni, and Zr) through coordination bonds at the value of pH = 4 to form the corresponding metal complexes namely: Sn-CAA, Fe-CAA, Ni-CAA and Zr-CAA. The consistency of the coordination was confirmed by several spectroscopic techniques including FT-IR, XRD, SEM, and EDX. The catalytic reduction of these metal ion-based products was carried out against MO and CR in the presence of NaBH4 as a reducing agent under UV irradiation. All catalysts based metal complexes showed enhanced catalytic reduction against CR compared to MO. Among all those mentioned metal complexes Sn-CAA showed the best catalytic reduction of these dyes. The time taken by the Sn-CAA for CR, and MO is 5 and 7min respectively. Ni-CAA was classified as the second efficient product against both dyes, where the reduction process took 20 and 9 min respectively. The other two catalysts took a long time for CR and MO reduction. Zr-CAA showed more than 80 % reduction of only CR dye within 20 min. Whereas, Fe-CAA did not show any significant sign of reduction against both the dyes after the same time. The order of higher catalytic reduction was illustrated as: Sn-CAA > Ni-CAA > Zr-CAA = Fe-CAA.

Synthesis of free-standing silver nanoparticles coated filter paper for recyclable catalytic reduction of 4-nitrophenol and organic dyes

Cellulose ◽  
2019 ◽  
Vol 27 (4) ◽  
pp. 2279-2292 ◽  
Author(s):  
Melisew Tadele Alula ◽  
Peter Lemmens ◽  
Mothusi Madiba ◽  
Bokang Present
Keyword(s):  
Silver Nanoparticles ◽  
Filter Paper ◽  
Catalytic Reduction ◽  
Organic Dyes ◽  
Free Standing

Low-cost palladium decorated on m-aminophenol-formaldehyde-derived porous carbon spheres for the enhanced catalytic reduction of organic dyes

2018 ◽  
Vol 5 (2) ◽  
pp. 354-363 ◽  
Author(s):  
Pitchaimani Veerakumar ◽  
I. Panneer Muthuselvam ◽  
Pounraj Thanasekaran ◽  
King-Chuen Lin
Keyword(s):  
Porous Carbon ◽  
Catalytic Reduction ◽  
Organic Dyes ◽  
Low Cost ◽  
Carbon Spheres ◽  
Novel Method ◽  
Porous Carbon Spheres

A novel method for the synthesis of recyclable Pd@PCS catalyst was applied for the reduction of CV, EY, and SY.

Insights into the catalytic reduction of organic dyes and antibacterial activity of graphene oxide supported mono and bimetallic nanocomposites

2017 ◽  
Vol 41 (11) ◽  
pp. 4348-4359 ◽  
Author(s):  
K. Sivaranjan ◽  
P. Vanitha ◽  
A. Sathiyaseelan ◽  
P. T. Kalaichelvan ◽  
M. Sathuvan ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Graphene Oxide ◽  
Catalytic Reduction ◽  
Organic Dyes ◽  
Bimetallic Nanocomposites

GO-supported mono and bimetallic NCs were synthesized. The newly designed GO-supported NCs were utilized for the catalytic reduction of organic dyes and their antibacterial activity was also investigated.

Activation of two-dimensional MoS2 nanosheets by wet-chemical sulfur vacancy engineering for the catalytic reduction of nitroarenes and organic dyes

2020 ◽  
Vol 20 ◽  
pp. 100678
Author(s):  
S. García-Dalí ◽  
J.I. Paredes ◽  
B. Caridad ◽  
S. Villar-Rodil ◽  
M. Díaz-González ◽  
...  
Keyword(s):  
Catalytic Reduction ◽  
Organic Dyes ◽  
Two Dimensional ◽  
Mos2 Nanosheets ◽  
Sulfur Vacancy ◽  
Wet Chemical
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