The impact of alkali metal halide electron donor complexes in the photocatalytic degradation of pentachlorophenol

Khuzwayo, Zakhele Siyanda Prince; Chirwa, Evans M.N.

doi:10.1016/j.jhazmat.2016.08.069

Cited by 15 publications

(7 citation statements)

References 40 publications

(45 reference statements)

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“…The best performing TiO2 catalyst identified from the screening experiments was modified by introducing Zn and Cu metal dopants using a procedure similar to that described by Khuzwayo and Chirwa (2017). In this method, 1 g of TiO2 was added to 50 mL of dopant solution with a concentration of 30 g/L.…”

Section: Catalyst Modificationmentioning

confidence: 99%

Effect of TiO2 phase on the photocatalytic degradation of methylene blue dye

Tichapondwa

Newman

Kubheka

2020

Physics and Chemistry of the Earth, Parts A/B/C

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Section: Catalyst Modificationmentioning

confidence: 99%

Effect of TiO2 phase on the photocatalytic degradation of methylene blue dye

Tichapondwa

Newman

Kubheka

2020

Physics and Chemistry of the Earth, Parts A/B/C

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“…The exploitation of photocatalysts is one of the keys to realize the high‐performance application of photocatalytic technology 10‐12 . Up to now, various semiconductor photocatalysts have been developed, including metal oxides (TiO 2 , Bi 2 O 3 , etc), 13‐16 metal sulfides (MoS 2 , Bi 2 S 3 , etc), 17‐21 multi‐component oxides (Bi 2 WO 6 , SrTiO 3 , etc), 22‐25 metal selenides (MoSe 2 , CdSe, etc), 26‐29 metal phosphides (Co 2 P, Ni 2 P, etc), 30‐32 metal phosphates (Ag 3 PO 4 , BiPO 4 , etc), 33,34 metal halides (AgBr, etc), 35‐37 metal oxyhalides (BiOBr, BiOCl, etc), 38‐40 metal‐free materials (SiC, g‐C 3 N 4 , etc) 41‐43 and so on. Among them, the semiconductor with a band gap of Eg ≥ 3 eV are called wide‐band‐gap photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Bi‐based photocatalysts for light‐driven environmental and energy applications: Structural tuning, reaction mechanisms, and challenges

Chen

Liu

Cui

et al. 2020

EcoMat

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Environmental pollution and energy crisis have become major challenges to sustainable development of human society. Solar-driven photocatalytic technology is regarded as an extremely attractive solution to environmental remediation and energy conversion. Unfortunately, practical applications of traditional photocatalysts are restricted owing to the poor absorption of visible light, insufficient charge separation and undefined reaction mechanism. Therefore, developing novel visible light photocatalysts and exploring their modification strategies are significant in the area of photocatalysis. Bi-based photocatalysts have attracted wide attention due to unique geometric structures, tunable electronic structure and decent photocatalytic activity under visible light. At present, Bi-based photocatalysts can be mainly classified as bismuth metal, binary oxides, bismuth oxyhalogen, multicomponent oxides and binary sulfides, and so forth. Although they can be used as independent photocatalysts for environmental purification and energy development, their efficiency is not ideal. Therefore, many efforts have been made to enhance their photocatalytic performance in the past few decades. Significant progresses in determining the fundamental properties of photocatalysts, improving the photocatalytic performance and understanding the photocatalytic mechanism in important reactions have been made benefited from the various new developed concepts and approaches. This review introduces the structural properties of Bi-based photocatalysts in detail and summarizes the design and modification strategy for improving the photocatalytic performance, including metal/ Peng Chen and Hongjing Liu contributed equally to this work.

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“…Chlorophenols, listed as priority pollutants by most water directives worldwide due to their high toxicity, are still massively employed in industrial and agricultural activities (Hechmi et al, 2016;Khuzwayo and Chirwa, 2017). Pentachlorophenol (PCP,C6HCl5O), the highest chlorinated phenol, is widely used as herbicide, fungicide, insecticide and disinfectant, showing main applications in agriculture, wood preservation and industry (Amendola et al, 2017;Tsoufis et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…As a result, it has been detected in industrial wastewater of pH 9.0 at a concentration of 490 mg/L (Rahmani et al, 2018). Various technologies have been developed for the treatment of PCP in water, including biodegradation (Khan et al, 2017), adsorption (Zhou et al, 2014), chemical oxidation and reduction (Shih et al, 2016), electrochemical oxidation (Niu et al, 2013) and photocatalysis (Khuzwayo and Chirwa, 2017). Unfortunately, most of these methods exhibit several weaknesses like long treatment times required, high energy consumption, insufficient ability to ensure total removal and inefficient mineralization that causes the accumulation of toxic intermediates.…”

Section: Introductionmentioning

confidence: 99%