Anodic fabrication of advanced titania nanotubes photocatalysts for photoelectrocatalysis decolorization of Orange G dye

Juang, Yaju; Liu, Yijin; Nurhayati, Ervin; Thủy, Nguyễn Thị; Huang, Chihpin; Hu, Chi-Chang

doi:10.1016/j.chemosphere.2015.11.029

Cited by 16 publications

(6 citation statements)

References 30 publications

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“…4 shows the decolorization of methyl orange in the cathode chamber and the anode chamber under different electrolyte dosage. The results show that if the electrolyte concentration is too low, the conductivity of the solution is low, which is not conducive to the degradation reaction; however, if the electrolyte concentration is too high, the hydrogen evolution side reaction will accelerate, the power expenditure will increase, and a large number of bubbles will be generated, which decreases the mass transfer rate; thus, the decolorization effect will be changed [14]. Based on the results, the optimum amount of Na 2 SO 4 is 0.02 mol/L.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Response Surface Methodology for Optimizing the Degradation of Methyl Orange in Aqueous Solution by a Diaphragm System that Utilizes a Cathode and Anode Coaction Electrochemical Method

Ban¹,

Nan²,

Jin³

et al. 2021

Pol. J. Environ. Stud.

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In an electrochemical reactor made by the authors, the degradation of simulated methyl orange wastewater was experimentally studied by using a diaphragm system with an anode and cathode coaction electrochemical method. Response surface methodology was used to optimize the one-factor test results. The optimum condition was that when the voltage was 20.56 V, the distance between the plates was 4.4 cm, and the aeration rate was 2.21 L/min. The order of influence of each factor was as follows: voltage> distance between electrodes> aeration rate. The two most influential factors were the voltage and aeration rate. Under optimal conditions, the decolorization rate of methyl orange in the cathode chamber reached 90.81%, and in the anode chamber, it was 98.75%. At the same time, the energy expenditure of the diaphragm system during electrolysis is analyzed. UV-visible absorption spectroscopy showed that methyl orange experienced both molecular structure degradation and mineralization during the electrolysis process. The decolorization effect in the anode chamber was better than that in the cathode chamber, but the degree of mineralization of methyl orange in the cathode chamber was better than that in the anode chamber.

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Section: Accepted Manuscriptmentioning

confidence: 99%

Response Surface Methodology for Optimizing the Degradation of Methyl Orange in Aqueous Solution by a Diaphragm System that Utilizes a Cathode and Anode Coaction Electrochemical Method

Ban¹,

Nan²,

Jin³

et al. 2021

Pol. J. Environ. Stud.

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“…Liu et al, 2010). This promoted highly oxidative sites for the generation of hydroxyl radicals (OH • ) for the degradation of organics (Juang et al, 2016). Hence, the recombination of electrons played the major role for the oxidation of organics, and could be enhanced by the manipulation of electrons through an external source.…”

Section: Irradiationmentioning

confidence: 99%

“…. The reduction cathode has been demonstrated to generate reactive oxygen species which enhanced organic degradation if oxygen is diffused around the cathode(Garcia-Segura et al, 2013;Juang et al, 2016). The degradation of organics such as phenol and EDTA with the reduction of Cr(VI) to Cr(III) has been demonstrated using PECs, with the anode providing the oxidation process while the cathode initiates the reduction process (Q Wang et al, 2016;Q.…”

mentioning

confidence: 99%

“…Similarly, the balance of the redox reaction occurred at the rGO Cathode where electrons are reintroduced. It was reported that the introduction of dissolved oxygen at the cathode area, enabled the scavenging of electrons by O2 to form reactive oxygen species (ROS)(Garcia-Segura et al, 2013;Juang et al, 2016). The lack of electron scavengers or reducing agents at the cathode surface created a recombination situation.…”

mentioning

confidence: 99%

“…As the decolorization of the AO7 was due to the oxidative anode within the system, and was attributed to the breaking of the azo bonds within the azo dyes(Pedro Silva et al, 2004;Zhong et al, 2011). The reduced rate of degradation does suggest that the electrons either disrupted the water chemistry by reducing OH • back into hydroxide (OH -)(Juang et al, 2016), reversing the overall degradation process.…”

mentioning

confidence: 99%

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Multi-dimensional micro-/nano TiO2 reactor spheres for simultaneous organic degradation and heavy metal recovery

Ang¹

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The intricate link between water and energy has raised the need for a pragmatic approach towards absolving the cycle for sustainable clean water purification. Therefore, significant attention has been drawn towards advanced materials which harness solar energy for effective water purification, and are also able to manage pollutants including pathogens, organics and heavy metals.This thesis explores the feasibility of fabricating titanium dioxide (TiO2)-based materials and its derivatives through sustainable synthesis approaches for the simultaneous degradation of organics and heavy metal recovery.In a preliminary study, TiO2 hollow spheres were fabricated using carbonaceous spheres as templates to investigate the structural morphology and photocatalytic oxidation of organic pollutants as well as changes to flux performance with and without photoinduced superhydrophilicity. The study demonstrated the formation of 300 nm Hierarchical TiO2 Hollow Spheres (HTHS) composed of 13.79 nm nanoparticulates. The HTHS revealed increased UV-absorbance which suggest light scattering by the hollow morphology which resulted in enhanced organic degradation. The flux evaluation observed increased flux due to superhydrophilicity for both HTHS and P25 nanoparticulate. The P25 demonstrated higher magnitude of flux increment due to higher surface to fluid contact. However, the advantage of larger microstructures is the pragmatic recovery of material and prevention of release out of the treatment process.Subsequently, improvements were made to design a novel synthesis process as well as to modify the TiO2 based spheres. The synthesis method considered a green synthesis pathway which applied minimal additives and involved a 2-step process. Firstly, the highly-concentrated metal nitrate solution penetrated the pores of the carbonaceous spheres followed by a solvothermal treatment in Tiglycerolate during which Ion Exchange occurs. The morphology of the spheres includes micro spheres consisting of hierarchical, multi-shell hollow spheres assembled by nanoparticulates. throughout the Ph.D journey. His life philosophies, view-points and approaches aided me both in research and provocative thoughts on making life choices. I could not have imagined having a better advisor and mentor for my Ph.D study. Special thanks to my Co-Supervisor Dr. Bai Hongwei whom I have worked with since joining Prof. Darren's Research Group. His stories and life journey has always been inspiring and his advice, guidance, insights, and of course time and friendship in Ph.D journey.

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Advances in Template Prepared Nano‐Oxides and their Applications: Polluted Water Treatment, Energy, Sensing and Biomedical Drug Delivery

Zhao

Shao

et al. 2020

The Chemical Record

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The nano‐oxide materials with special structures prepared by template methods have a good dispersion, regular structures and high specific surface areas. Therefore, in some areas, improved properties are observed than conventional bulk oxide materials. For example, in the treatment of dye wastewater, the treatment efficiency of adsorbents and catalytic materials prepared by template method was about 30 % or even higher than that of conventional samples. This review mainly focuses on the progress of inorganic, organic and biological templates in the preparation of micro‐ and nano‐ oxide materials with special morphologies, and the roles of the prepared materials as adsorbents and photocatalysts in dye wastewater treatment. The characteristics and advantages of inorganic, organic and biological template are also summarized. In addition, the applications of template method prepared oxides in the field of sensors, drug carrier, energy materials and other fields are briefly discussed with detailed examples.

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Anodic fabrication of advanced titania nanotubes photocatalysts for photoelectrocatalysis decolorization of Orange G dye

Cited by 16 publications

References 30 publications

Response Surface Methodology for Optimizing the Degradation of Methyl Orange in Aqueous Solution by a Diaphragm System that Utilizes a Cathode and Anode Coaction Electrochemical Method

Response Surface Methodology for Optimizing the Degradation of Methyl Orange in Aqueous Solution by a Diaphragm System that Utilizes a Cathode and Anode Coaction Electrochemical Method

Multi-dimensional micro-/nano TiO2 reactor spheres for simultaneous organic degradation and heavy metal recovery

Advances in Template Prepared Nano‐Oxides and their Applications: Polluted Water Treatment, Energy, Sensing and Biomedical Drug Delivery

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