Preparation and characterization of highly photocatalytic active hierarchical BiOX (X=Cl, Br, I) microflowers for rhodamine B degradation with kinetic modelling studies

Gu, Yingying; Zhao, Li; Yang, Ming-yang; Xiong, Yi-qiu; Wu, Zhe; Zhou, Min-jia; Yan, Jun

doi:10.1007/s11771-017-3477-x

Cited by 12 publications

(5 citation statements)

References 65 publications

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“…S6(b)† can be considered negligible. 15,26,49,50 Two conclusions can be drawn from this experiment. First, the photocatalytic degradation reactions are partially triggered by the light beam used to continuously measure absorption from the solution.…”

Section: Resultsmentioning

confidence: 90%

“…26,49 R -square values higher than 0.99% are obtained for all degradation curves using the pseudo-first-order kinetic equation: −ln( C / C o ) = k app t , where C and C o are live and initial concentrations of RhB, k app is the apparent first-order kinetics model (min −1 ) and t is the time. 50 The k app values thus obtained are summarized in the inset of Fig. 5(b).…”

Section: Resultsmentioning

confidence: 99%

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Screen-printed p–n BiOCl/BiFeO₃ heterojunctions for efficient photocatalytic degradation of Rhodamine B

Fourmont

Cloutier

2022

RSC Adv.

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Section: Resultsmentioning

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Screen-printed p–n BiOCl/BiFeO₃ heterojunctions for efficient photocatalytic degradation of Rhodamine B

Fourmont

Cloutier

2022

RSC Adv.

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“…(ii) Photocatalysis is coupled with an operation that does not affect the photocatalytic mechanisms, including biological treatment, membrane reactor, membrane photoreactor, physical adsoption 4 . These combinations can increase the efficiency of the photocatalysis, by decreasing the reaction time or the costs 5 .…”

Section: Introductionmentioning

confidence: 99%

Facile Preparation and Characterization of Nanostructured BiOI microspheres with certain adsorption-photocatalytic properties

Che

et al. 2018

Mat. Res.

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A novel adsorbent based nanostructured bismuth oxyiodide (BiOI) microspheres combining the highly effective adsorption and green photocatalytic regeneration were fabricated by a facile and rapid low-temperature chemical bath method. The resultant products were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Nitrogen adsorption-desorption measurements, and UV-Vis diffuse reflectance spectroscopy (DRS). The BiOI microspheres displayed remarkable performance towards removal of Rhodamine B (RhB) and Cr (VI) from aqueous solution, showing a maximum adsorption capacity reached up to 40.78 mg g-1 and 38.01 mg g-1 , respectively. The kinetics and equilibrium of adsorption process were found to follow the pseudo-second-order kinetic and Langmuir isotherm models. Notably, the BiOI microspheres have excellent photocatalytic regeneration capability due to their intrinsically prominent photoresponse in visible light region. By meaning of providing a new insight into the design of new generation adsorbent that could combine adsorption and solar-driven photocatalysis, the synthesized BiOI microspheres are very promising for the large-scale industrial application for water treatment.

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“…Zhou(Zhou et al 2020) and other researchers used ethylene glycol as solvent to prepare three-dimensional BiOCl microspheres with an average particle size of 1.73 nm by solvothermal method. Gu(Gu et al 2017) and other researchers used the general solvothermal method to synthesize the ower like BiOCl photocatalyst composed of pure phase nanosheets.Zhu(Zhu et al 2019) and other researchers successfully synthesized Cds/BiOCl thin lm photocatalyst through two-step hydrothermal and hydrolysis methods. Tian(Tian et al 2019) and other researchers successfully prepared ower shaped BiOCl by a simple one-step room temperature method.…”

mentioning

confidence: 99%

Degradation of ciprofloxacin by persulfate activated by Fe(III)-doped BiOCl composite photocatalyst

Liu

Lin

et al. 2023

Environ Sci Pollut Res

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Fe-BOC-X photocatalyst was successfully prepared by solvothermal method. The photocatalytic activity of Fe-BOC-X was determined by cipro oxacin (CIP), a typical uoroquinolone antibiotic. Under sunlight irradiation, all Fe-BOC-X showed better CIP removal performance than original BiOCl. In comparison, the photocatalyst with iron content of 50 wt% (Fe-BOC-3) has excellent structural stability and the best adsorption photodegradation e ciency. The removal rate of CIP (10 mg/l) by Fe-BOC-3 (0.6 g/L) reached 81.4% within 90 min. At the same time, the effects of photocatalyst dosage, pH, persulfate, persulfate concentration and combinations of different systems (PS, Fe-BOC-3, Vis/PS, Vis/Fe-BOC-3, Fe-BOC-3/PS and Vis/Fe-BOC-3/PS) on the reaction were systematically discussed. Reactive species trapping experiments, electron spin resonance (ESR) signals revealed that the photo-generated holes ( ), hydroxyl radical ( ), sulfate radical ( ) and superoxide radical ( ) played an important role in CIP degradation, hydroxyl radicals ( ) and sulfate radicals ( ) play a major role. Various characterization methods have demonstrated that Fe-BOC-X has larger speci c surface area and pore volume than original BiOCl. UV-vis DRS indicate that Fe-BOC-X has wider visible light absorption and faster photocarrier transfer, and provides abundant surface oxygen absorption sites for effective molecular oxygen activation. Accordingly, a large number of active species were produced and participated in the photocatalytic process, thus effectively promoting the degradation of cipro oxacin. Based on HPLC-MS analysis, two possible decomposition pathways of CIP were nally proposed. The main degradation pathways of CIP are mainly due to the high electron density of piperazine ring in CIP molecule, which is mainly attacked by various free radicals. The main reactions include piperazine ring opening, decarbonylation, decarboxylation and uorine substitution. This study can better open up a new way for the design of visible light driven photocatalyst and provide more ideas for the removal of CIP in water environment.

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Preparation and characterization of highly photocatalytic active hierarchical BiOX (X=Cl, Br, I) microflowers for rhodamine B degradation with kinetic modelling studies

Cited by 12 publications

References 65 publications

Screen-printed p–n BiOCl/BiFeO₃ heterojunctions for efficient photocatalytic degradation of Rhodamine B

Screen-printed p–n BiOCl/BiFeO₃ heterojunctions for efficient photocatalytic degradation of Rhodamine B

Facile Preparation and Characterization of Nanostructured BiOI microspheres with certain adsorption-photocatalytic properties

Degradation of ciprofloxacin by persulfate activated by Fe(III)-doped BiOCl composite photocatalyst

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Preparation and characterization of highly photocatalytic active hierarchical BiOX (X=Cl, Br, I) microflowers for rhodamine B degradation with kinetic modelling studies

Cited by 12 publications

References 65 publications

Screen-printed p–n BiOCl/BiFeO3 heterojunctions for efficient photocatalytic degradation of Rhodamine B

Screen-printed p–n BiOCl/BiFeO3 heterojunctions for efficient photocatalytic degradation of Rhodamine B

Facile Preparation and Characterization of Nanostructured BiOI microspheres with certain adsorption-photocatalytic properties

Degradation of ciprofloxacin by persulfate activated by Fe(III)-doped BiOCl composite photocatalyst

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Product

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Screen-printed p–n BiOCl/BiFeO₃ heterojunctions for efficient photocatalytic degradation of Rhodamine B

Screen-printed p–n BiOCl/BiFeO₃ heterojunctions for efficient photocatalytic degradation of Rhodamine B