Oxalate capped iron nanomaterial: from methylene blue degradation to bis(indolyl)methane synthesis

RSC Advances ◽  
2014 ◽  
Vol 4 (63) ◽  
pp. 33446-33456 ◽  
Author(s):  
Rupa Pegu ◽  
Krishna Joyti Majumdar ◽  
Dhruba Joyti Talukdar ◽  
Sanjay Pratihar
Keyword(s):  
Methylene Blue ◽  
Oxalic Acid ◽  
Sodium Borohydride ◽  
Room Temperature ◽  
Methylene Blue Degradation ◽  
Iron Oxalate ◽  
Reduction Of Iron ◽  
Green Procedure

An efficient, sustainable and green procedure for the synthesis of selective orthorhombic iron(oxalate) capped Fe(0) [Fe(ox)–Fe(0)] nanomaterial is developed using sodium borohydride (NaBH4) reduction of iron(ii) salt in the presence of oxalic acid at room temperature in water.

Iron oxalate capped iron–copper nanomaterial for oxidative transformation of aldehydes

2015 ◽  
Vol 39 (2) ◽  
pp. 1430-1437 ◽  
Author(s):  
Rajarshi Kashyap ◽  
Dhruba Joyti Talukdar ◽  
Sanjay Pratihar
Keyword(s):  
Oxalic Acid ◽  
Sodium Borohydride ◽  
Room Temperature ◽  
Borohydride Reduction ◽  
Oxidative Transformation ◽  
Iron Oxalate ◽  
Iron Copper ◽  
Reduction Of Iron ◽  
Sodium Borohydride Reduction ◽  
Green Procedure

An efficient, sustainable and green procedure for the synthesis of selective orthorhombic iron(oxalate) capped Fe–Cu bimetallic oxide nanomaterial [Fe(ox)Fe–CuOx] was developed using a sodium borohydride reduction of iron(ii) salt in the presence of oxalic acid at room temperature followed by addition of copper sulfate in water.

scholarly journals Synthesis of Magnetic Ferrocene-Containing Polymer with Photothermal Effects for Rapid Degradation of Methylene Blue

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 558
Author(s):  
Wenhui Zhu ◽  
Caiyun Zhang ◽  
Yali Chen ◽  
Qiliang Deng
Keyword(s):  
Methylene Blue ◽  
Photoelectron Spectroscopy ◽  
Room Temperature ◽  
Degradation Rate ◽  
Model Compound ◽  
Vibrating Sample Magnetometer ◽  
Simulated Sunlight ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir

Photothermal materials are attracting more and more attention. In this research, we synthesized a ferrocene-containing polymer with magnetism and photothermal properties. The resulting polymer was characterized by Fourier-transform infrared (FT-IR), vibrating sample magnetometer (VSM), scanning electron microscope (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and thermogravimetric analysis (TGA). Its photo-thermocatalytic activity was investigated by choosing methylene blue (MB) as a model compound. The degradation percent of MB under an irradiated 808 nm laser reaches 99.5% within 15 min, and the degradation rate is 0.5517 min−1, which is 145 times more than that of room temperature degradation. Under irradiation with simulated sunlight, the degradation rate is 0.0092 min−1, which is approximately 2.5 times more than that of room temperature degradation. The present study may open up a feasible route to degrade organic pollutants.

scholarly journals Kinetic Studies of Methylene Blue Degradation using CaTiO3 Photocatalyst from Chicken Eggshells

2021 ◽  
Vol 1726 ◽  
pp. 012017
Author(s):  
Lusi Ernawati ◽  
Ade Wahyu Yusariarta ◽  
Andromeda Dwi Laksono ◽  
Ruri Agung Wahyuono ◽  
Hendri Widiyandari ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Kinetic Studies ◽  
Methylene Blue Degradation

Enhanced Nanostructured ZnO-Based Photocatalyst Immobilized by Ink-Jet Printing for Methylene Blue Degradation

JOM ◽  
2020 ◽  
Vol 73 (1) ◽  
pp. 387-394
Author(s):  
Liwen Huang ◽  
Fangyuan Chen ◽  
Sara Paydar ◽  
Yan Wu
Keyword(s):  
Methylene Blue ◽  
Methylene Blue Degradation ◽  
Ink Jet Printing ◽  
Ink Jet ◽  
Jet Printing

scholarly journals Zirconium-Doped Chromium IV Oxide Nanocomposites: Synthesis, Characterization, and Photocatalysis towards the Degradation of Organic Dyes

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 117
Author(s):  
Zahir Muhammad ◽  
Farman Ali ◽  
Muhammad Sajjad ◽  
Nisar Ali ◽  
Muhammad Bilal ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Solid State ◽  
Room Temperature ◽  
Organic Dyes ◽  
Uv Light ◽  
Heterogeneous Photocatalysis ◽  
Ft Ir ◽  
Complete Mineralization

Degradation of organic dyes and their byproducts by heterogeneous photocatalysts is an essential process, as these dyes can be potentially discharged in wastewater and threaten aquatic and xerophyte life. Therefore, their complete mineralization into nontoxic components (water and salt) is necessary through the process of heterogeneous photocatalysis. In this study, Zr/CrO2 (Zirconium-doped chromium IV oxide) nanocomposite-based photocatalysts with different compositions (1, 3, 5, 7 & 9 wt.%) were prepared by an environmentally friendly, solid-state reaction at room temperature. The as-prepared samples were calcined under air at 450 °C in a furnace for a specific period of time. The synthesis of Zr/CrO2 photocatalysts was confirmed by various techniques, including XRD, SEM, EDX, FT-IR, UV-Vis, and BET. The photocatalytic properties of all samples were tested towards the degradation of methylene blue and methyl orange organic dyes under UV light. The results revealed a concentration-dependent photocatalytic activity of photocatalysts, which increased the amount of dopant (up to 5 wt.%). However, the degradation efficiency of the catalysts decreased upon further increasing the amount of dopant due to the recombination of holes and photoexcited electrons.

scholarly journals Synthesis of yttrium doped nanocrystalline ZnO and its photocatalytic activity in methylene blue degradation

2016 ◽  
Vol 9 ◽  
pp. S1618-S1626 ◽  
Author(s):  
P.K. Sanoop ◽  
S. Anas ◽  
S. Ananthakumar ◽  
V. Gunasekar ◽  
R. Saravanan ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Activity ◽  
Methylene Blue Degradation

Preparation and Application of Titanate Nanotubes on Methylene Blue Degradation from Aqueous Media

2011 ◽  
Vol 117-119 ◽  
pp. 786-789 ◽  
Author(s):  
Wen Churng Lin ◽  
Wein Duo Yang ◽  
Zen Ja Chung ◽  
Hui Ju Chueng
Keyword(s):  
Methylene Blue ◽  
Surface Area ◽  
Uv Irradiation ◽  
Aqueous Media ◽  
Hydrothermal Process ◽  
Reaction Times ◽  
Titanate Nanotubes ◽  
Methylene Blue Degradation ◽  
Bet Analysis

Titanate nanotubes were synthesized at various hydrothermal temperatures and reaction times by the hydrothermal process and used as photocatalyst. BET analysis was conducted in order to find out the surface area of these as-prepared samples and it was found that the surface area increases with rise in temperature till 130 oC. Synthesized as-prepared titanate nanotubes were applied on methylene blue degradation from aqueous media by UV irradiation. It was observed that dye removes ~99% from the aqueous media at a titanate nanotubes dose of 2 g/L.

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