Bismuth oxybromide promoted detoxification of cylindrospermopsin under UV and visible light illumination

Wang, Shulian; Ma, Wanhong; Fang, Yanfen; Jia, Meilin; Huang, Yuewang

doi:10.1016/j.apcatb.2013.12.016

Cited by 39 publications

(23 citation statements)

References 42 publications

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“…At present, it is still an arduous task for us to remove the environmentally existed organic/inorganic contaminants [1][2][3]. Luckily, semiconductor photocatalysis is considered as one of the most potential methods in various efficient strategies [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

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One-pot synthesis of novel flower-like BiOBr0.9I0.1/BiOI heterojunction with largely enhanced electron-hole separation efficiency and photocatalytic performances

Jia

Cao

Lin

et al. 2015

Journal of Molecular Catalysis A: Chemical

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Section: Introductionmentioning

confidence: 99%

“…The energy band structure of BiOBr 0.9 I 0 1. /BiOIIn general, the energy band structure of a photocatalyst significantly influences the light absorption, the oxidation and reduction ability of photocarriers and determines the final activity.…”

mentioning

confidence: 99%

One-pot synthesis of novel flower-like BiOBr0.9I0.1/BiOI heterojunction with largely enhanced electron-hole separation efficiency and photocatalytic performances

Jia

Cao

Lin

et al. 2015

Journal of Molecular Catalysis A: Chemical

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“…[81]. When BiOBr was used as photocatalyst, MC-LR and CYN degradation was achieved by direct reaction with the catalyst instead of radicals, which followed a different reaction mechanism, involving decarboxylation [83,84].…”

Section: Photocatalysismentioning

confidence: 99%

“…generally reacts with organic pollutants in three distinctive routes: i) via hydrogen abstraction from C-H bonds, ii) via addition to unsaturated bonds and iii) via electron transfer reactions from carboxylates, amines and aromatic compounds [35]. The third mechanism promotes decarboxylation, which, besides for SR-AOPs, has only been reported for UV-based degradation of cyanotoxins [56,83,84,121,123]. PMS and PS also function as oxidants, but SO 4 is usually more effective and faster given its substantially higher redox potential (Table 1).…”

Section: Somentioning

confidence: 99%

Advanced oxidation processes for the removal of cyanobacterial toxins from drinking water

Schneider

Bláha

2020

Preprint

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Drinking water production faces many different challenges with one of them being naturally produced cyanobacterial toxins. Since pollutants become more abundant and persistent today, conventional water treatment is often no longer sufficient to provide adequate removal. Amongst other emerging technologies, advanced oxidation processes (AOPs) have a great potential to appropriately tackle this issue. This review addresses the economic and health risks posed by cyanotoxins and discusses their removal from drinking water by AOPs. The current state of knowledge on AOPs and their application for cyanotoxin degradation is synthesized to provide an overview on available techniques and effects of water quality, toxin- and technique-specific parameters on their degradation efficacy. The different AOPs are compared based on their efficiency and applicability, considering economic, practical and environmental aspects and their potential to generate toxic disinfection byproducts. For future research, more relevant studies to include the degradation of less explored cyanotoxins, toxin mixtures in actual surface water, assessment of residual toxicity and scale-up are recommended. Since actual surface water most likely contains more than just cyanotoxins, a multi-barrier approach consisting of a series of different physical, biological and chemical – especially oxidative – treatment steps is inevitable to ensure safe and high quality drinking water.

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“…6,7 For example, BiOBr exhibits superior photocatalytic activity for the degradation of rhodamine B (RhB) 8,9 and cylindrospermopsin 10 under UV and visible light irradiation. In addition, PO 4 3− , possessing a large negative charge, is postulated to help the e − /h + separation, which can effectively improve its photocatalytic activity.…”

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confidence: 99%

Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO₄Nanorods

Qiu

Zeng

et al. 2015

J. Electrochem. Soc.

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Hexagonal BiPO 4 nanorods thin films with remarkable photoelectrocatalytic (PEC) performance were successfully fabricated on FTO substrates via cathodic electrodeposition. Chronoamperometry, linear sweep voltammertry (LSV) and electrochemical impedance spectroscopy (EIS) were used to study the photoelectrochemical properties of these materials. The photoelectrocatalytic capability was evaluated by the degradation of methyl blue (MB). The film deposited in 40 min has the best catalytic activity and good stability with the 30 h degrading experiment. The photocurrent was increasing because the concentration of MB was being degrading. The CV analysis which reveals a potential shift and the increasing anodic and cathodic peak currents with increasing scan rate proves a diffusion-controlled process. The hydroxyl radicals are the main active species that can oxidize the adsorbed organic pollutants. Up to date, powder photocatalysts have several inevitable weaknesses among the researches of photocatalysis in aqueous solution, including the separation of powder from system after reaction, high electron-hole recombination rate of catalyst which reduces the photocatalystic activity, and the limitation of the photoefficiency due to the slow interfacial electron transfer. Since the report of the HondaFujishima effect on TiO 2 electrodes under UV light, 34 photoelectrocatalytic (PEC) oxidation has been regarded as an ideal means of curbing environmental organic dyes pollution in aqueous solution using different semiconductor electrodes. [35][36][37][38][39] Moreover, the applied potential can enhance charge separation and facilitate the transfer of photogenerated electron. In our previous work, the BiPO 4 film prepared by hydrothermal process has performed remarkable photoelectrocatalytic activity. 40 However, a more facile way to synthesize more stable film still needs to be explored.In this paper, the BiPO 4 nanorods were first synthesized by a one-step cathodic electrodepostion approach on FTO substrates from precursor solution. Structure, morphology and the electrochemical performance were characterized as well. The photoelectrocatalytic activity was evaluated by the degradation of MB. ExperimentalElectrochemical deposition.-All chemical reagents were of analytical purity without further purification. All electrochemical dez E-mail: tzhangym@jnu.edu.cn position experiments were performed with a HDV-7C transistor potentiostatic apparatus connected to a three-electrode cell. A graphite rod was used as the auxiliary electrode. Fluorine doped SnO 2 (FTO) coated glass (5.0×4.0 cm 2 ) with a sheet resistance of 10 was used as the working electrode which was connected to the cell with a double salt bridge system. An Hg/Hg 2 Cl 2 electrode was used as the reference electrode. The FTO substrate was cleaned ultrasonically in ethanol, distilled water and 10% HNO 3 , and then rinsed in distilled water again before electrodeposition. Solution for electrodepositing the BiPO 4 nanorods thin films were prepared by dissolving 10 mM Bi(NO ...

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Bismuth oxybromide promoted detoxification of cylindrospermopsin under UV and visible light illumination

Cited by 39 publications

References 42 publications

One-pot synthesis of novel flower-like BiOBr0.9I0.1/BiOI heterojunction with largely enhanced electron-hole separation efficiency and photocatalytic performances

One-pot synthesis of novel flower-like BiOBr0.9I0.1/BiOI heterojunction with largely enhanced electron-hole separation efficiency and photocatalytic performances

Advanced oxidation processes for the removal of cyanobacterial toxins from drinking water

Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO₄Nanorods

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Bismuth oxybromide promoted detoxification of cylindrospermopsin under UV and visible light illumination

Cited by 39 publications

References 42 publications

One-pot synthesis of novel flower-like BiOBr0.9I0.1/BiOI heterojunction with largely enhanced electron-hole separation efficiency and photocatalytic performances

One-pot synthesis of novel flower-like BiOBr0.9I0.1/BiOI heterojunction with largely enhanced electron-hole separation efficiency and photocatalytic performances

Advanced oxidation processes for the removal of cyanobacterial toxins from drinking water

Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO4Nanorods

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Electrochemical Synthesis of Photoelectrocatalytic Thin Films of Hexagonal BiPO₄Nanorods