Synergy mechanism for <scp>TiO<sub>2</sub></scp>/activated carbon composite material: Photocatalytic degradation of methylene blue solution

Xu, Wenqi; Jin, Yang; Ren, Yongsheng; Li, Jun; Wei, Zhizhen; Ban, Changsheng; Cai, Haitao; Chen, Ming

doi:10.1002/cjce.24097

Cited by 19 publications

(25 citation statements)

References 33 publications

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“…[50,54] The interaction effect of photocatalyst and PS concentrations at 250 mg/L of PMS is depicted in Figure 4. Similar to Figure 3, raising the photocatalyst and PS concentrations up to their optimum values improved the degradation efficiency; that can be attributed to the formation of radicals through reactions ( 8), ( 9), (22), and (23). [3,53] S…”

Section: Analysis Of Individual and Interaction Effects Of Parameterssupporting

confidence: 66%

“…Several attempts have been made to enhance the photocatalytic activity of TiO 2. [22][23][24][25][26][27] The incorporation of oxidants such as persulphate (PS) and peroxymonosulphate (PMS) in the photocatalytic reaction is a promising method to accelerate the rate of degradation by creating more reactive and diverse species as well as decreasing the rate ofelectron-hole recombination. [28][29][30][31] Madhavan and coworkers found that PMS was more effective than PS to improve the degradation rate of acid red 88 in the presence of TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

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Analysis of interaction effects of persulphate and peroxymonosulphate on solar photocatalytic degradation of cortisone acetate

et al. 2023

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The degradation of environmental contaminants using sustainable solar energy is one of the most promising applications of the photocatalytic process. In this research, the individual and interaction effects of persulphate (PS) and peroxymonosulphate (PMS) oxidants on the solar photocatalytic degradation of cortisone acetate (CA) were studied. Concentrations of PS, PMS, and photocatalyst were independent variables, and the response was CA degradation efficiency. Response surface methodology (RSM) and artificial neural network (ANN) models were developed to predict the CA degradation efficiency. The analysis of the current results revealed that the optimum amounts of individual variables were highly affected by the other variables, which confirmed their significant interaction effect. As an example, by increasing the PS concentration, not only were the required concentrations of PMS and photocatalyst decreased, but also the degradation efficiency was enhanced. Then, the overall optimum concentration of the photocatalyst, PS, and PMS were found to be respectively 328.7, 119.1, and 194.2 mg/L using the genetic algorithm method. The maximum CA degradation efficiency at the optimum condition was 95.6% after only 30 min of solar radiation. Finally, investigation of relative importance of the variables showed that the concentrations of both oxidants affected the degradation efficiency almost equally.

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Section: Analysis Of Individual and Interaction Effects Of Parameterssupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

Analysis of interaction effects of persulphate and peroxymonosulphate on solar photocatalytic degradation of cortisone acetate

et al. 2023

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“…Photocatalytic activity tests are utilized to further substantiate the ability of TiO 2 and ZnO to generate free radicals and the inhibitory effect of lignin on this ability. The contents of • OH and • O 2 − , both of which are the main reactants for photocatalytic MB degradation, 53,54 are positively correlated with the degradation rate. Figure 12c shows that the degradation rate of the modifier is 3T > 3Z ≫ 3T5L ≈ 3Z5L.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Synergistic Effect and Mechanism of Nanomaterial Compounded with Sustainable Lignin for Aging Resistance of Asphalt

Zhang

Yan

et al. 2023

ACS Sustainable Chem. Eng.

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TiO 2 and ZnO can alleviate the direct UV attack toward asphalt by absorbing UV, but this process can generate the free radical and may accelerate aging indirectly. Abundant and renewable lignin could trap the free radical and is therefore considered a useful antiaging agent. In this study, to enhance the resistance of asphalt against thermal and UV oxidation comprehensively, lignin was blended in with TiO 2 /ZnO at a mass ratio of 5:3 to prepare composites (3T5L and 3Z5L). Then, the rheological properties and chemical structure of various modified ES70# before and after TFOT and UV aging were studied. The modification mechanism was obtained by SEM, TEM, UV−vis, XPS VB and photocatalytic activity tests. The results showed that 3T5L and 3Z5L improve the shear deformation resistance of asphalt while they slightly influence low-temperature brittleness. Meanwhile, 3T5L and 3Z5L significantly slow down the aging degree of ES70# because of its synergetic effect, especially for 3Z5L. Furthermore, the synergetic effect is explained that lignin and nanomaterials provide a lower free radical generation and lower UV aging state for each other to exert their strong resistance to thermal-and UV-oxidative aging, respectively. Overall, nanomaterials compounded with lignin show promise for eco-friendly antiaging asphalt with economic benefits.

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“…(1) adsorption: AC was trapped and accumulated the benzene gas around the catalyst, which then transferred to the active site of TiO2 for the photo-degradation process [18], (2) AC could acidify the OH groups in the TiO2 surface, these could lead to extra degradation and complete removal of the pollutant, (3) AC could play a role in the oxidation step via the transfer of electron/hole and also the large AC pores can accelerate the flow of benzene to the photo-oxidative species [19], (4) in addition,…”

Section: Application Of Ac/tio2 Air Purifier Filter For Benzene Gas C...mentioning

confidence: 99%

Air pollution remediation using synergetic coupling of AC/TiO₂ filter for benzene gas removal: regeneration and reuse of spent activated carbon after the treatment process

Mohamed

2022

J. Phys.: Conf. Ser.

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Recently, climate change and air pollution are of the most important problems confronting the world. Hence, the present work is designed to provide an air purifier that can be re-utilized many times with high efficiency for several volatile pollutants. The air purifier fabricated from AC/TiO2 was used to investigate the performance of this filter towards the removal of volatile organic compounds (VOCs) from the air. The filter was composed of a mixture of fiber layers (TiO2, SiO2 and AC). The results indicated that the synergistic coupling of adsorption/oxidation technique is effective for removal of the air pollutants as well as for regeneration of the activated carbon to be extensional reused. The performance test of air purifier confirmed its high removal efficiency (98%). It was found that nearly up to 94% and 86% recovery of the filter activity could be achieved after the second and third cycles of treatment, respectively. From these results, AC/TiO2 filter still has the capability to remove and control extra gas pollutants indicating the synergistic coupling effect of TiO2 with the activated carbon. This filter concerns in developing an economic and feasible air purifier system to remove air contaminants for several times.

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Synergy mechanism for TiO₂/activated carbon composite material: Photocatalytic degradation of methylene blue solution

Cited by 19 publications

References 33 publications

Analysis of interaction effects of persulphate and peroxymonosulphate on solar photocatalytic degradation of cortisone acetate

Analysis of interaction effects of persulphate and peroxymonosulphate on solar photocatalytic degradation of cortisone acetate

Synergistic Effect and Mechanism of Nanomaterial Compounded with Sustainable Lignin for Aging Resistance of Asphalt

Air pollution remediation using synergetic coupling of AC/TiO₂ filter for benzene gas removal: regeneration and reuse of spent activated carbon after the treatment process

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Synergy mechanism for TiO2/activated carbon composite material: Photocatalytic degradation of methylene blue solution

Cited by 19 publications

References 33 publications

Analysis of interaction effects of persulphate and peroxymonosulphate on solar photocatalytic degradation of cortisone acetate

Analysis of interaction effects of persulphate and peroxymonosulphate on solar photocatalytic degradation of cortisone acetate

Synergistic Effect and Mechanism of Nanomaterial Compounded with Sustainable Lignin for Aging Resistance of Asphalt

Air pollution remediation using synergetic coupling of AC/TiO2 filter for benzene gas removal: regeneration and reuse of spent activated carbon after the treatment process

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Synergy mechanism for TiO₂/activated carbon composite material: Photocatalytic degradation of methylene blue solution

Air pollution remediation using synergetic coupling of AC/TiO₂ filter for benzene gas removal: regeneration and reuse of spent activated carbon after the treatment process