Comparative study on the photocatalytic activity of biomass carbon doped Bi2WO6 crystallite with self-assembled hierarchical structure

Liu, Dinghan; Huang, Jianfeng; Cao, Liyun; Tao, Xingwang; Zhang, Bo-Ye

doi:10.1007/s10854-015-4048-2

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…As shown in Fig. S3 a, characteristic peaks of O 2 − ∙ (six lines) and ∙OH (1:2:2:1) were observed when using DMPO as a trapping agent 46 , 47 . However, the peak corresponding to SO 4 − ∙ was not detected due to nucleophilic substitution resulting in the rapid conversion of DMPO-SO 4 − · to DMPO-·OH 48 .…”

Section: Resultsmentioning

confidence: 85%

Powdered activated carbon (PAC)-assisted peroxymonosulfate activation for efficient urea elimination in ultrapure water production from reclaimed water

Kim,

Yoo,

Lee

et al. 2024

Sci Rep

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Urea is a problematic pollutant in reclaimed water for ultrapure water (UPW) production. The sulfate radical-based advanced oxidation process (SR-AOP) has been recognized as an effective method for urea degradation. However, conventional metal-based catalysts for peroxymonosulfate (PMS) activation are unsuitable for UPW production due to issues related to metal ion leaching. In this study, the use of powdered activated carbon (PAC) was investigated for the removal of urea from reclaimed water. The PAC exhibited a high degree of defects (ID/IG = 1.709) and various surface oxygen functional groups (C–OH, C=O, and C–O), which greatly enhanced its catalytic capability. The PAC significantly facilitated PMS activation in the PMS + PAC system, leading to the complete urea decomposition. The PMS + PAC system demonstrated excellent urea removal efficiency within a wide pH range, except for pH < 3. Among the various anions present, the CO32− and PO43− inhibited urea degradation, while the coexistence of Cl− promoted urea removal. Furthermore, the feasibility test was evaluated using actual reclaimed water. The quenching test revealed that SO4−·, ·OH, and O2−· played crucial roles in the degradation of urea in the PAC-assisted SR-AOP. The oxygen functional groups (C–OH and O–C=O) and defect sites of PAC clearly contributed to PMS activation.

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Section: Resultsmentioning

confidence: 85%

Powdered activated carbon (PAC)-assisted peroxymonosulfate activation for efficient urea elimination in ultrapure water production from reclaimed water

Kim,

Yoo,

Lee

et al. 2024

Sci Rep

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“…Metal tungstates, such as Y 2 WO 6 [9,10], Bi 2 WO 6 [11], CaWO 4 [12,13] and ZnWO 4 [14,15], are investigated widely in a very long time because of their electric, optical and environmental applications.…”

Section: Introductionmentioning

confidence: 99%

DEGRADATION OF METHYLENE BLUE UNDER SOLAR LIGHT USING QUARTZ – Bi2WO6 NANOCOMPOSITES

2018

IJMTER

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Abstract-Photocatalysis is a catalytic oxidation process occurring on the surface of semiconductor photocatalyst materials by using the irradiation of light. It is applied as an effective, easy-operated with low cost to degrade the organic dyes pollutants. Quartz-Bi 2 WO 6 nanocomposites were synthesized by a co-precipitation method and characterized by X-ray diffraction (XRD), UV-vis-diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and transmission electron microscopy (TEM) techniques. The photocatalytic activity of QuartzBi 2 WO 6 nanocomposites was evaluated by degrading methylene blue under the sunlight irradiation, revealing that Quartz-Bi 2 WO 6 nanocomposites exhibit a good photocatalytic activity. The photodegradation of MB follows pseudo first order kinetics. The most suitable operation conditions of Quartz-Bi 2 WO 6 nanocomposites at a concentration of 0.20 g/L, irradiation time-180 min, dye concentration 10 µM. Quartz-Bi 2 WO 6 nanocomposites is an efficient photocatalyst for the degradation of organic pollutants like MB under sunlight.

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“…However, only a few investigations have been conducted on biomass-derived doping in the photocatalytic field. [21][22][23][24][25] Silk fibroin (SF), as a protein-based biomaterial, contains some nitrogen. [26][27][28][29] Herein, a novel N-doped NaTaO 3 photocatalyst was synthesized from NaTaO 3 precursor and SF.…”

mentioning

confidence: 99%

Improved visible-light photocatalytic activity of sodium tantalum oxide via biomass-derived silk fibroin doping

Sun

Luo

Zhu

et al. 2018

Textile Research Journal

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Biomass-derived silk fibroin (SF)-doped NaTaO3 catalysts were successfully synthesized by a simple hydrothermal process using SF as the dopant. The as-prepared samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and ultraviolet-visible diffuse reflectance spectroscopy (UV-vis DRS) analyses. The samples were tested as photocatalysts in the degradation of methylene blue under UV and visible light. XRD results showed the monoclinic structure of NaTaO3 lacking significant structural changes after anion doping. SEM and TEM images revealed the nanocubic morphology of the samples, the crystal particle sizes of which were about 100–300 nm. The XPS spectrum showed the peak of Ta4p3&N1s, indicating the combination of N and Ta. The UV-vis DRS results of the samples revealed a cut-off edge that red shifted from 315 nm of the pure NaTaO3 to 324 nm of the SF-doped counterpart. SF doping helped narrow the band gap and rendered the prepared sample sensitive to visible light. Under UV and visible-light irradiation, SF-doped NaTaO3 exhibited higher photocatalytic activity than that the undoped compound. SF-doped NaTaO3 samples also exhibited excellent stability during the recycling photocatalytic process.

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Comparative study on the photocatalytic activity of biomass carbon doped Bi2WO6 crystallite with self-assembled hierarchical structure

Cited by 6 publications

References 17 publications

Powdered activated carbon (PAC)-assisted peroxymonosulfate activation for efficient urea elimination in ultrapure water production from reclaimed water

Powdered activated carbon (PAC)-assisted peroxymonosulfate activation for efficient urea elimination in ultrapure water production from reclaimed water

DEGRADATION OF METHYLENE BLUE UNDER SOLAR LIGHT USING QUARTZ – Bi2WO6 NANOCOMPOSITES

Improved visible-light photocatalytic activity of sodium tantalum oxide via biomass-derived silk fibroin doping

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