scholarly journals Author Correction: Network structure-based decorated CPA@CuO hybrid nanocomposite for methyl orange environmental remediation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dina F. Katowah ◽  
Sayed M. Saleh ◽  
Sara A. Alqarni ◽  
Reham Ali ◽  
Gharam I. Mohammed ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Network Structure ◽  
Environmental Remediation ◽  
Hybrid Nanocomposite

scholarly journals Network structure-based decorated CPA@CuO hybrid nanocomposite for methyl orange environmental remediation

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dina F. Katowah ◽  
Sayed M. Saleh ◽  
Sara A. Alqarni ◽  
Reham Ali ◽  
Gharam I. Mohammed ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Uv Radiation ◽  
Environmental Remediation ◽  
Oxidative Polymerization ◽  
Degradation Process ◽  
Process Efficiency ◽  
Hybrid Nanocomposite ◽  
Solution Ph ◽  
Methylene Orange ◽  
Cuo Nps

AbstractA unique network core–shell hybrid design-based cross-linked polyaniline (CPA), which was coated with CuO nanoparticles (NPs) and decorated with nitrogen-doped SWCNT/GO/cellulose N-SWCNTS-GO-CE, has been fabricated using the oxidative polymerization technique. This hybrid nanocomposite shows excellent photocatalytic degradation and an acceptable adsorption capability for Methyl Orange (MO) dye in aqueous solutions with a very slight effect for the N-SWCNTS-GO-CE CuO component. The prepared nanocomposites were used for the removal of a carcinogenic and noxious dye, Methyl Orange, from aqueous samples under various adsorption conditions. Approximately 100% degradation of 10 mg/L of Methylene orange dye was observed within 100 min at pH 6.0 using 50 mg/L CPA/N-SWCNTS-GO-CE/CuO nanocomposite under UV radiation. Additionally, significant factors were investigated on the degradation process including the contact time, MO initial concentration (Ci), solution pH, and dosage of the CuO nanocomposite. All investigated experiments were performed under UV radiation, which provided significant data for the MO degradation process. Furthermore, the recovery of the nanocomposite was studied based on the photocatalytic process efficiency. The obtained data provide the high opportunity of reusing CPA/N-SWCNTS-GO-CE/CuO nanocomposite for numerous photocatalytic processes. The CPA/N-SWCNTS-GO-CE/CuO nanocomposite was prepared via chemical oxidative copolymerization of polyaniline (PANI) with p-phenylenediamine (PPDA) and triphenylamine (TPA) in the presence of N-SWCNTS-GO-CE and CuO NPs. The morphology, structure and thermal properties of the CPA/N-SWCNTS-GO-CE/CuO nanocomposite were investigated using various techniques, including FTIR, XRD, RAMAN, SEM, MAP, EDX, TEM, TGA and DTG. Therefore, CPA/N-SWCNTS-GO-CE/CuO nanocomposite can be effectively used as a convenient and reusable adsorbent to remove hazardous dye from wastewater.

scholarly journals Co3O4/TiO2 hetero-structure for methyl orange dye degradation

2018 ◽  
Vol 79 (5) ◽  
pp. 947-957 ◽  
Author(s):  
Mahabubur Chowdhury ◽  
Sarah Kapinga ◽  
Franscious Cummings ◽  
Veruscha Fester
Keyword(s):  
Catalytic Activity ◽  
Methyl Orange ◽  
Environmental Remediation ◽  
Metal Ion ◽  
Dye Degradation ◽  
Lattice Structure ◽  
Host Lattice ◽  
Commercial Application ◽  
Potential Candidate ◽  
Methyl Orange Degradation

Abstract Advanced oxidation processes based on sulphate radical generated by peroxymonosulphate (PMS) activation is a promising area for environmental remediation. One of the biggest drawbacks of heterogeneous PMS activation is catalyst instability and metal ion leaching. In this study, a simple organic binder mediated route was explored to substitute Ti4+ ions into the Co3O4 host lattice structure to create a Co-O-Ti bond to minimise cobalt leaching during methyl orange degradation. The catalyst was characterised by X-ray diffraction, and scanning and transmission electron microscopy. The as-prepared catalysts with Co3O4:TiO2 ratio of 70:30 exhibited minimal leaching (0.9 mg/L) compared to other ratios studied. However, the pristine Co3O4 exhibited highest catalytic activity (rate constant = 0.41 min−1) and leaching (26.7 mg/L) compared to composite material (70:30 Co3O4:TiO2). Interestingly, the morphology of the composite and leaching of Co2+ ions were found to be temperature dependent, as an optimum temperature ensured strong Co-O-Ti bond for prevention of Co2+ leaching. The classical quenching test was utilised to determine the presence and role of radical species on methyl orange degradation. The fabricated catalyst also exhibited good catalytic activity in degrading mixed dyes and good recyclability, making it a potential candidate for commercial application.

Fabrication of kapok paper-zinc oxide-polyaniline hybrid nanocomposite for methyl orange removal

2018 ◽  
Vol 350 ◽  
pp. 971-976 ◽  
Author(s):  
Aldwin Christian Lacuesta ◽  
Marvin U. Herrera ◽  
Ronniel Manalo ◽  
Mary Donnabelle L. Balela
Keyword(s):  
Zinc Oxide ◽  
Methyl Orange ◽  
Hybrid Nanocomposite

β-Cyclodextrin modified graphitic carbon nitride for the removal of pollutants from aqueous solution: experimental and theoretical calculation study

2016 ◽  
Vol 4 (37) ◽  
pp. 14170-14179 ◽  
Author(s):  
Yidong Zou ◽  
Xiangxue Wang ◽  
Yuejie Ai ◽  
Yunhai Liu ◽  
Yongfei Ji ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Methyl Orange ◽  
Theoretical Calculation ◽  
Environmental Remediation ◽  
Carbon Nitride ◽  
Graphitic Carbon ◽  
Graphitic Carbon Nitride

The enhanced interaction of β-cyclodextrin modified graphitic carbon nitride (g-C3N4/β-CD) or g-C3N4 with methyl orange (MO) or Pb(ii) in natural environmental remediation.

scholarly journals Copper/nickel-Decorated Olive Pit Biochar: One Pot Solid State Synthesis for Environmental Remediation

2021 ◽  
Author(s):  
Ahmed M. Khalil ◽  
Laurent Michely ◽  
Rémy Pires ◽  
Stéphane Bastide ◽  
Souad Ammar ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Solid State ◽  
Environmental Remediation ◽  
Solid State Synthesis ◽  
One Pot ◽  
Efficient Catalyst ◽  
New Horizons ◽  
Copper Nickel ◽  
Powder Particles ◽  
The One

Olive pit powder particles were impregnated with copper and nickel nitrates and pyrolyzed at 400 °C. The resulting material consists of bimetallic CuNi-decorated biochar. CuNi nanocatalysts were found to be as small as 10 nm and very well dispersed over biochar. XRD results evidenced zero valent copper and nickel and formation of copper-nickel solid solutions.The biochar@CuNi was found to be efficient catalyst of the reduction of methyl orange (MO) dye, taken as model pollutant. <br> To sum up, the one pot method devised in this work provided unique CuNi-decorated biochar and opens new horizons for the emerging topic of biochar-supported nanocatalysts.

scholarly journals Controlled Growth of LDH Films with Enhanced Photocatalytic Activity in a Mixed Wastewater Treatment

Nanomaterials ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 807 ◽  
Author(s):  
Zhongchuan Wang ◽  
Pengfei Fang ◽  
Parveen Kumar ◽  
Weiwei Wang ◽  
Bo Liu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Photocatalytic Activity ◽  
Methyl Orange ◽  
Visible Light ◽  
Environmental Remediation ◽  
High Photocatalytic Activity ◽  
Manufacturing Cost ◽  
Transport Pathways ◽  
Layer Spacing ◽  
Double Hydroxides

Due to multiple charge transport pathways, adjustable layer spacing, compositional flexibility, low manufacturing cost, and absorption of visible light, layered double hydroxides (LDHs) are a promising material for wastewater treatment. In this study, LDH films and Fe-doped LDH films with different metal ions (Ni, Al, Fe) on the surface of conductive cloth were successfully prepared and applied for the photocatalytic degradation of wastewater containing methyl orange and Ag ions under visible-light irradiation. The chemical state of Fe ions and the composition of LDHs on methyl orange photodegradation were investigated. The experimental results showed that LDH films exhibited high photocatalytic activity. The photocatalytic activity of LDH films on methyl orange improved in the mixed wastewater, and the Fe-doped NiAl–LDH films exhibited best visible-light photocatalytic performance. The analysis showed that Ag ions in the mixed wastewater were reduced by the LDH films and subsequently deposited on the surface of the LDH films. The Ag nanoparticles acted as electron traps and promoted the photocatalytic activity of the LDH films on methyl orange. Thus, we have demonstrated that prepared LDH films can be used in the treatment of mixed wastewater and have broad application prospects in environmental remediation and purification processes.

Synthesis of NanoTiO2/CTMAB-Expanded Perlite Applied to the Degradation of Methyl Orange

2011 ◽  
Vol 110-116 ◽  
pp. 3801-3806 ◽  
Author(s):  
Xiao Zhi Wang ◽  
Qian Qian Gao ◽  
Hai Tao Zhao ◽  
Ke Feng ◽  
Rong Guo
Keyword(s):  
Methyl Orange ◽  
Environmental Remediation ◽  
Degradation Kinetics ◽  
Removal Rate ◽  
Organic Pollutant ◽  
Polluted Water ◽  
Expanded Perlite ◽  
Factors Affecting ◽  
Degradation Of Methyl Orange ◽  
Relevant Factors

Different environmental remediation materials were prepared by using Cetyltrimethylammonium Bromide (CTMAB) and/or TiO2to surface-modify expanded perlite (EP). Photocatalytic degradation of Methyl Orange in polluted water by these materials (CTMAB-EP, TiO2/CTMAB-EP, TiO2-EP and EP), adsorption/ degradation kinetics and relevant factors affecting degradation effects were studied. The results showed that EP had little ability to remove Methyl Orange in water, while EP modified with CTMAB and/or TiO2could remove Methyl Orange (MO) significantly, and TiO2/CTMAB-EP treatment showed the highest removal rate in all treatments. Removal effects of the materials were influenced by dosage of material, shaking time and initial concentration of MO in water. These results indicated that nanoTiO2/CTMAB-Expanded perlite can be used as a new and promising environmental remediation material in efficient removal of organic pollutant from environment.

Polymer-Titania Composites for Photocatalysis of Organics in Aqueous Environments

2009 ◽  
Vol 1171 ◽  
Author(s):  
Cecil A Coutinho ◽  
Vinay K Gupta
Keyword(s):  
Methyl Orange ◽  
Environmental Remediation ◽  
Degradation Kinetics ◽  
Titanium Dioxide Nanoparticles ◽  
Titania Nanoparticles ◽  
Thermally Responsive ◽  
Vis Spectroscopy ◽  
Aqueous Environments ◽  
Methyl Orange Concentration ◽  
Ph Conditions

AbstractMicrocomposites composed of titanium dioxide nanoparticles embedded within cross-linked, thermally responsive microgels of poly(N-isopropylacrylamide) were prepared. These microcomposites showed rapid sedimentation, which is useful for gravity separation of the titania nanoparticles in applications such as environmental remediation. To investigate the degradation kinetics using these microcomposites in aqueous suspensions, methyl orange was employed as a model contaminant. The decline in the methyl orange concentration was monitored using UV-Vis spectroscopy. Degradation of methyl orange was also measured using only nanoparticles TiO2 (DegussaTM P25) for comparison with the microcomposites. Experiments were performed at different pH conditions that spanned acidic, neutral, and basic conditions to gain insight into the interplay of TiO2 surface charge, ionization of the polyelctrolyte chains in the microcomposites, and ionization of the methyl orange.

Pt/POMs/TiO2 composite nanofibers with an enhanced visible-light photocatalytic performance for environmental remediation

2019 ◽  
Vol 48 (35) ◽  
pp. 13353-13359 ◽  
Author(s):  
Hongfei Shi ◽  
Tingting Zhao ◽  
Yue Zhang ◽  
Huaqiao Tan ◽  
Wenhui Shen ◽  
...  
Keyword(s):  
Methyl Orange ◽  
Bisphenol A ◽  
Visible Light ◽  
Environmental Remediation ◽  
Composite Nanofibers ◽  
Photocatalytic Performance ◽  
Highly Efficient ◽  
Visible Light Photocatalytic

Pt/PMo12/TiO2 composite nanofibers have been prepared and exhibit a highly efficient visible-light photocatalytic performance for removing methyl orange, tetracycline, Bisphenol A and Cr(vi).

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