A controlled solvethermal approach to synthesize nanocrystalline iron oxide for congo red adsorptive removal from aqueous solutions

Gao, Jinrong; Wei, Wei; Shi, MingJin; Han, Hekun; Lu, Junwei; Xie, Jimin

doi:10.1007/s10853-016-9760-7

Cited by 30 publications

(7 citation statements)

References 55 publications

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“…Thus, the adsorption properties of the material also declined in strong acid conditions. The results were in consistent with some other reports. , It is important to note that the natural pH of CR solution is between 6 and 7. , Hence, the Fe(OH) 3 @Cellulose PHFs can favorably adsorb the dye without the need to adjust pH of the polluted water. This will make the water treatment simpler and less costly.…”

Section: Resultssupporting

confidence: 92%

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Fabrication and Characterization of Highly Porous Fe(OH)₃@Cellulose Hybrid Fibers for Effective Removal of Congo Red from Contaminated Water

Zhao

et al. 2017

ACS Sustainable Chem. Eng.

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Research on water purification has recently revolved around nanomaterials because of their large specific surface area. However, there are still some problems associated with the preparation, application, and recovery of nanomaterials. Herein, we report for the first time a novel approach for one-step synthesis of porous hybrid fibers (PHFs), which can be used as an effective adsorbent for dye removal from polluted water. A lowcost biopolymer cellulose was chosen as the matrix of the fibers, whereas a NaOH solution was applied as the coagulation bath for the cellulose spinning dope that contained a certain amount of FeCl 3 . The obtained Fe(OH) 3 @Cellulose PHFs exhibited a multiscaled pore structure, with the in situ generated Fe(OH) 3 nanoparticles uniformly distributed on the regenerated cellulose nanofibrous network of the fibers. These structural attributes are quite advantageous for an efficient adsorbent. The maximum Congo red removal capacity of the Fe(OH) 3 @Cellulose PHFs reached 689.65 mg/g, which was much higher than many early reported values. Importantly, the Fe(OH) 3 @Cellulose PHFs could favorably remove the dye at natural pH through filtration adsorption with excellent reusability. This approach, with the desired characteristics of simplicity, high efficiency, low cost, and being environmentally friendly, demonstrated a great potential for industrial applications.

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Section: Resultssupporting

confidence: 92%

“…The results were in consistent with some other reports. 1,34 It is important to note that the natural pH of CR solution is between 6 and 7. 19,35 Hence, the Fe(OH) 3 @Cellulose PHFs can favorably adsorb the dye without the need to adjust pH of the polluted water.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Fabrication and Characterization of Highly Porous Fe(OH)₃@Cellulose Hybrid Fibers for Effective Removal of Congo Red from Contaminated Water

Zhao

et al. 2017

ACS Sustainable Chem. Eng.

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“…In recent years, apart from metal oxides and conventional dye adsorbents such as activated charcoal, electrospun polymer fibers have also been widely studied for their interesting thermal and chemical properties and for applications to adsorb the volatile organic contaminants [26][27][28][29] in air and dyes in water. In this study, inexpensive, simple, and non-toxic composite TiO 2 -SnO 2 nanofibers were prepared using electrospinning under ambient experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

Metal Oxide Electrospun Nanofibrous Membranes for Effective Dye Degradation and Sustainable Photocatalysis

Babu

Rashid

Sundarrajan

et al. 2023

Sustainable Chemistry

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The fabrication of metal oxide nanofibers using (titanium (IV) isopropoxide) and (tin (IV) tert-butoxide) of weight ratio 1:1 precursor in presence of poly (vinyl pyrrolidone) as a binder using a well-known electrospinning technique is reported. The average diameter of TiO2, SnO2, and composite TiO2-SnO2 nanofibers were found to be in the range 75–110 nm. The nanofibers were characterized using thermogravimetric analysis (TGA) to understand the polymer evaporation temperature and further analyzed using scanning electron microscopy (SEM) to study the morphology of the nanofibers. The oxidation states of titanium (Ti) and tin (Sn) ions were analyzed using X-ray photoelectron spectroscopy (XPS), indicating that the TiO2 undergoes a change even after loading SnO2. The photocatalytic efficiency of the composite TiO2-SnO2 fibers was investigated to study the degradation capabilities under ultraviolet (UV) light towards industrial polluting dyes such as Alcian Blue, Alizarin Red S, Bilirubin, Brilliant Blue, Bromophenol Blue, and Rhodamine B ITC. Rhodamine B showed a significant degradation rate of about 0.0064 min−1 in comparison to the other dyes.

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“…Before scanning electron microscopy analysis, the collagen fiber samples were placed in a chamber with constant temperature and humidity (PT-2091D, Precise test instr. CO., LTD, China) at 40 °C and 50% Rh for 48 h. Then, the microstructures of the fibers were analyzed with scanning electron microscopy (SEM) 25 (FESEM, Hitachi, S4800, Japan), and the interaction effects of collagen fibers and chomium ions were analyzed with FT-IR spectroscopy 26 (FTIR, Nicolet iS10, Thermo Scientific, USA).…”

Section: ■ Introductionmentioning

confidence: 99%

Mechanism and Effect of High-Basicity Chromium Agent Acting on Cr-Wastewater-Reuse System of Leather Industry

Cao

Wang

Zhou

et al. 2018

ACS Sustainable Chem. Eng.

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Chrome-containing waste is the major stumbling block for the leather industry. However, in current leather manufacturing, chrome tanning is difficult to replace due to the excellent characteristics it endows on the finished leather and because Cr agents play a key role in tanning. To reduce the increasing serious chrome pollution, this study establishes a Cr-wastewater loop system (CL system) to reuse Cr effluents through high-basicity chromium agent adjusting, and the mechanisms of Cr agent with different basicities affecting the CL system were explored. The basicity of Cr agent represented the number of free hydroxyls attached to the chromium atoms, which decided the binding capacity between Cr agent and collagen. Therefore, the existence forms of Cr complexes at different basicities was investigated, and the possible binding sites of Cr 3+ ions and chrome were calculated and analyzed by molecular docking. The result emphasized that highbasicity Cr agent was effective in treating Cr wastewater. The high-basicity Cr agent balances the existing forms of Cr complexes to enhance the quality of finished leather produced by CL system. After 20 cycles of Cr-wastewater reuse, Cr 3+ concentration in effluent was lower than 5 mg/L. It suggested that CL system was capable of removing chrome ions from Cr wastewater. Afterward, by analyzing the physicochemical properties, we saw that shrinkage temperature of the wet-blue produced from CL system reached 102 °C and the tensile strength was over 13 MPa, which was even to those of traditional tanning methods and meets national standards. Meantime, the organoleptic properties such as softness and grain smoothness are comparable to those of the wet-blue leather tanned by 33% basicity Cr agent as well. Therefore, the new CL system not only reduces chrome pollution from the tanning process but also ensures the high quality of leather.

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A controlled solvethermal approach to synthesize nanocrystalline iron oxide for congo red adsorptive removal from aqueous solutions

Cited by 30 publications

References 55 publications

Fabrication and Characterization of Highly Porous Fe(OH)₃@Cellulose Hybrid Fibers for Effective Removal of Congo Red from Contaminated Water

Fabrication and Characterization of Highly Porous Fe(OH)₃@Cellulose Hybrid Fibers for Effective Removal of Congo Red from Contaminated Water

Metal Oxide Electrospun Nanofibrous Membranes for Effective Dye Degradation and Sustainable Photocatalysis

Mechanism and Effect of High-Basicity Chromium Agent Acting on Cr-Wastewater-Reuse System of Leather Industry

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A controlled solvethermal approach to synthesize nanocrystalline iron oxide for congo red adsorptive removal from aqueous solutions

Cited by 30 publications

References 55 publications

Fabrication and Characterization of Highly Porous Fe(OH)3@Cellulose Hybrid Fibers for Effective Removal of Congo Red from Contaminated Water

Fabrication and Characterization of Highly Porous Fe(OH)3@Cellulose Hybrid Fibers for Effective Removal of Congo Red from Contaminated Water

Metal Oxide Electrospun Nanofibrous Membranes for Effective Dye Degradation and Sustainable Photocatalysis

Mechanism and Effect of High-Basicity Chromium Agent Acting on Cr-Wastewater-Reuse System of Leather Industry

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Product

Resources

About

Fabrication and Characterization of Highly Porous Fe(OH)₃@Cellulose Hybrid Fibers for Effective Removal of Congo Red from Contaminated Water

Fabrication and Characterization of Highly Porous Fe(OH)₃@Cellulose Hybrid Fibers for Effective Removal of Congo Red from Contaminated Water