Comparative evaluation of anion doped photocatalysts on the mineralization and decolorization of natural organic matter

Uyguner-Demirel, Ceyda Senem; Sen-Kavurmaci, Sibel; Gürkan, Yelda Yalçın; Türkten, Nazlı; Çınar, Zekiye; Bekbölet, Miray

doi:10.1016/j.cattod.2014.04.020

Cited by 29 publications

(21 citation statements)

References 32 publications

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“…2 To improve the utilization of solar light, a lot of researchers have shown that doping TiO 2 with non-metal elements such as C, N, F, S and B could be an effective strategy. [3][4][5][6][7] In order to further achieve photocatalytic activity, co-doping TiO 2 with two or three non-metal elements has attracted much attention, such as N-F, 5,8 N-B, 9 C-N, 10 S-N, 11,12 S, N and C, 3,13 and so on. Density functional theory (DFT) calculations have shown that the doping S, N elements could lower the band gap of TiO 2 effectively.…”

Section: Introductionmentioning

confidence: 99%

Preparation of S–N co-doped CoFe₂O₄@rGO@TiO₂ nanoparticles and their superior UV-Vis light photocatalytic activities

et al. 2019

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Section: Introductionmentioning

confidence: 99%

Preparation of S–N co-doped CoFe₂O₄@rGO@TiO₂ nanoparticles and their superior UV-Vis light photocatalytic activities

et al. 2019

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“…Due to the adverse environmental significance of DOM in natural waters, removal of DOM by advanced oxidation techniques has been extensively studied under solar light irradiation [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Humic Acids Using LaFeO3

et al. 2018

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TiO2 photocatalytic degradation of dissolved organic matter (DOM), namely humic substances composed of humic (HA) and fulvic acids, has been investigated for decades. However, the application of non-TiO2 photocatalysis for this purpose has only received recent attention. Aiming to fill this gap, this study was performed to elucidate the photocatalytic degradation of HAs using the novel photocatalyst LaFeO3 (LF) under simulated solar light irradiation. HA was selectively fractionated by ultrafiltration to two different molecular size fractions representing high molecular fraction as 100 kDa and lower molecular size fraction comprised of humic components expressing size fractions smaller than 30 kDa. Photocatalyst LF was prepared by the citrate auto-combustion method and characterized by using various techniques and Brunauer–Emmett–Teller (BET) surface area. Ultraviolet (UV)-vis and excitation-emission matrix (EEM) fluorescence spectroscopic features were used to characterize the treated HA and photocatalytic mineralization extend was followed by dissolved organic carbon (DOC) contents. Photocatalytic performance of LF was compared to the metal modified version as Cu-doped LF. Highest mineralization was achieved upon the use of a photocatalyst dose of 0.25 mg/mL of LaFe0.90Cu0.10O3−δ (Cu-LF) for 30 kDaHA, whereas lowest mineralization was attained for 100 kDaHA upon the use of LF. Photocatalytic degradation kinetics indicated the possible use of LF and Cu-LF for the degradation of HA.

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“…The peak located at an excitation/emission (Ex/Em) wavelength of 240-245/415-425 nm, which is the characteristic fluorescence peak of HA. The peak intensity correlated positively with HA concentration [55,67]. Compared to the initial Ex/Em of 245/430 nm for HA with no ENPs present, the peak location showed a blue shift along both excitation and emission axes and the fluorescence peak intensity also decreased when ENPs were present (Table S1).…”

Section: Interaction Of Humic Acid On the Surface Of Ceo 2 And Tio 2 mentioning

confidence: 77%

Heteroaggregation of CeO2 and TiO2 engineered nanoparticles in the aqueous phase: Application of turbiscan stability index and fluorescence excitation-emission matrix (EEM) spectra

Luo

Ren

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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A B S T R A C TCeO 2 and TiO 2 engineered nanoparticles (ENPs) are being increasingly used in many applications. Due to their properties, heteroaggregation between these two types of ENPs is very likely, which can determine their fate and transport. However, the heteroaggregation behavior of CeO 2 and TiO 2 ENPs is still not clear, partly due to the lack of appropriate tools. In this study, we investigated the application of Turbiscan Stability Index (TSI) for the measurements of CeO 2 /TiO 2 ENP heteroaggregation. TSI was found to be effective to investigate the heteroaggregation and stability of the CeO 2 -TiO 2 ENPs system. Increasing CeO 2 /TiO 2 ENPs ratio reduces the TSI values, indicating higher stability. Fluorescence excitation-emission matrix (EEM) spectra were used to study the interface interaction between humic acid (HA) and CeO 2 /TiO 2 ENPs. The TSI value of ENPs were rising with the increasing of CeO 2 /TiO 2 ENPs ratios in the H River or Q Reservoir water. In addition, their variation trends were http://dx

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Comparative evaluation of anion doped photocatalysts on the mineralization and decolorization of natural organic matter

Cited by 29 publications

References 32 publications

Preparation of S–N co-doped CoFe₂O₄@rGO@TiO₂ nanoparticles and their superior UV-Vis light photocatalytic activities

Preparation of S–N co-doped CoFe₂O₄@rGO@TiO₂ nanoparticles and their superior UV-Vis light photocatalytic activities

Photocatalytic Degradation of Humic Acids Using LaFeO3

Heteroaggregation of CeO2 and TiO2 engineered nanoparticles in the aqueous phase: Application of turbiscan stability index and fluorescence excitation-emission matrix (EEM) spectra

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Comparative evaluation of anion doped photocatalysts on the mineralization and decolorization of natural organic matter

Cited by 29 publications

References 32 publications

Preparation of S–N co-doped CoFe2O4@rGO@TiO2 nanoparticles and their superior UV-Vis light photocatalytic activities

Preparation of S–N co-doped CoFe2O4@rGO@TiO2 nanoparticles and their superior UV-Vis light photocatalytic activities

Photocatalytic Degradation of Humic Acids Using LaFeO3

Heteroaggregation of CeO2 and TiO2 engineered nanoparticles in the aqueous phase: Application of turbiscan stability index and fluorescence excitation-emission matrix (EEM) spectra

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Preparation of S–N co-doped CoFe₂O₄@rGO@TiO₂ nanoparticles and their superior UV-Vis light photocatalytic activities

Preparation of S–N co-doped CoFe₂O₄@rGO@TiO₂ nanoparticles and their superior UV-Vis light photocatalytic activities