Removal of congo red from water using quercetin modified α-Fe2O3 nanoparticles as effective nanoadsorbent

Satheesh, R.; Kumaravel, Vignesh; Rajarajan, Muttukrishnan; Suganthi, A.; Sreekantan, Srimala; Kang, Misook; Kwak, Byeong Sub

doi:10.1016/j.matchemphys.2016.05.029

Cited by 54 publications

(16 citation statements)

References 65 publications

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“…A greater dosage endows a higher adsorption capacity to a maximum or saturation point, before it deteriorates due to exhaustive adsorption along with an increased magnitude of adsorbent dosage for a certain concentration of dyes. Endothermic [46] From Table 4, the time taken to reach equilibrium is ranging from few minutes to more than 24 h. A fast adsorption to reach equilibrium relies on dosage and concentration. The mutual interaction depends on concentration gradient as driving force, either higher concentration with limited active sites, or lower concentration with higher active sites.…”

Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 99%

Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Swan

Zaini

2019

Ecological Chemistry and Engineering S

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Global concern on dyes-laden effluent has intensified over the years. Dyes are toxic, stable to light, and hardly oxidized and bio-degraded, hence causing severe physiological effects to living organisms. In water, dye hinders the light penetration for photosynthetic activity, consequently oxygen is deficient for respiration by aquatic creatures. Adsorption has been widely recognized as the effective removal strategy to abate dye wastewater. However, the quests to improve the adsorption efficiency are continuously sought through new adsorbents with special characters, while performing the removal process at optimum operating conditions. This short review aims to summarize the recent progress in adsorption studies of two commonly used industrial dyes, namely malachite green and congo red by various adsorbents. From the quoted studies, the oxidized mesoporous carbon yields a higher adsorption capacity of malachite green at 1265 mg/g, while Fe3O4@nSiO2@mSiO2 displays a greater capacity for congo red removal at 1429 mg/g. A superior adsorption relies not only on specific surface area but also the synergistic interactions of pore width and mesoporosity, surface chemistry, and operating conditions. The dyes properties and factors affecting the adsorption are also highlighted and discussed, with recommendations and future outlook.

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Section: Recent Studies On the Adsorption Of Malachite Green And Congmentioning

confidence: 99%

Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Swan

Zaini

2019

Ecological Chemistry and Engineering S

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“…The details of characterization were already described in our previous report . The crystalline phases were analyzed by a Bruker D8 Advance X‐ray diffractometer (XRD) at 40 kV and 40 mA (CuKa irradiation, k = 1.542 Å).…”

Section: Methodsmentioning

confidence: 99%

Exploration of Ag decoration and Bi doping on the photocatalytic activity α‐Fe₂O₃ under simulated solar light irradiation

Rajamohan¹,

Kumaravel

Abdel‐Wahab

et al. 2018

Can J Chem Eng

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In the present investigation, silver decorated and bismuth doped a-Fe 2 O 3 (Ag/Bi-Fe 2 O 3 ) was successfully synthesized using the co-precipitation method. The size, shape, surface area, and magnetic properties were characterized by XRD, FE-SEM, EDX, BET, VSM, and UV-Vis-DRS techniques. The synthesized nanoparticles were used as a photocatalyst for the degradation of rose bengal (RB) dye under simulated solar light irradiation. Ag/Bi-Fe 2 O 3 showed the better photocatalytic activity of 97.11 % within 135 min when compared to Bi-Fe 2 O 3 and Ag-Fe 2 O 3 . The superior photo-catalytic activity of Ag/Bi-Fe 2 O 3 was mainly ascribed to visible light absorption and the suppression of photo-generated electron-hole recombination. Ag/Bi-Fe 2 O 3 was found to be a stable photocatalyst during recycling experiments. Besides, the magnetic property of Ag/Bi-Fe 2 O 3 makes it an ideal candidate for separation and recovery during recycling.

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“…where the Fe 2 O 3 nanoparticles were modified by quercetin and used for the removal of Congo red dye. The adsorption of Congo red on modified magnetic nanoparticles occurred at its natural pH 5.4 in 140 min and 25 °C with adsorption capacity obtained was 427.35 mg g −1 . Similarly, C. Muthukumaran et al.…”

Section: Removal Of Organic Contaminants Using Nanomaterialsmentioning

confidence: 99%

Recent Progress in Nanomaterials for Adsorptive Removal of Organic Contaminants from Wastewater

2020

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Water being most vital component of life is getting contaminated due to inhuman disposal of toxicants in water bodies. Organic compounds such as dyes, pharmaceuticals/drugs, pesticides etc. are used for various purposes and become life threatening when dumped in water bodies without pre‐treatment. Removal of these toxicants from environment is complicated but highly essential for sustainable development. Various methods have been used for this purpose among which adsorption is the most simple, fast, effective and inexpensive method for the removal of such contaminants. Nanomaterial proved to be one of the best adsorbent due to its unique structural properties which provides large surface area and high adsorption capacity. The factors affecting adsorption along with adsorption mechanism is discussed in detail. Detection of the pollutants is also quite tedious work as pollutants are present in trace quantity. UV‐Visible spectrophotometry is widely used detection technique which is easy to operate, produce accurate results and cheap. The review emphasizes the use of nanomaterial as adsorbents for the removal of various organic pollutants from wastewater using UV‐Visible spectrophotometry.

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Removal of congo red from water using quercetin modified α-Fe2O3 nanoparticles as effective nanoadsorbent

Cited by 54 publications

References 65 publications

Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Exploration of Ag decoration and Bi doping on the photocatalytic activity α‐Fe₂O₃ under simulated solar light irradiation

Recent Progress in Nanomaterials for Adsorptive Removal of Organic Contaminants from Wastewater

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Removal of congo red from water using quercetin modified α-Fe2O3 nanoparticles as effective nanoadsorbent

Cited by 54 publications

References 65 publications

Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Adsorption of Malachite Green and Congo Red Dyes from Water: Recent Progress and Future Outlook

Exploration of Ag decoration and Bi doping on the photocatalytic activity α‐Fe2O3 under simulated solar light irradiation

Recent Progress in Nanomaterials for Adsorptive Removal of Organic Contaminants from Wastewater

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Product

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Exploration of Ag decoration and Bi doping on the photocatalytic activity α‐Fe₂O₃ under simulated solar light irradiation