Binary composite MoS2/TiO2 nanotube arrays as a recyclable and efficient photocatalyst for solar water disinfection

Yan, Huiling; Liu, Lizhi; Wang, Rong; Zhu, Wenxin; Ren, Xinyi; Luo, Linpin; Zhang, Xu; Luo, Shijia; Ai, Xuelian; Wang, Jianlong

doi:10.1016/j.cej.2020.126052

Cited by 70 publications

(32 citation statements)

References 59 publications

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“…As demonstrated in Scheme 1, photogenerated electrons and holes are produced over BiOCl and MoS 2 under solar irradiation. Because of the relative position of their conduction (CB) and valence band (VB), when making contact, electrons will be moved to the CB of BiOCl, and holes will be transferred in the VB of MoS 2 [39,41]. At the same time, p-n heterojunctions are created at the interfaces of the p-type MoS 2 and the n-type BiOCl semiconductors, thus hindering their recombination [42,43].…”

Section: Catalyst Activitymentioning

confidence: 99%

Photocatalytic Degradation of Valsartan by MoS2/BiOCl Heterojunctions

et al. 2021

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In the present study, the removal of valsartan (VLS), an antihypertensive agent, under simulated solar radiation with the use of molybdenum sulfide-bismuth oxychloride composites (MoS2/BiOCl), of variable MoS2 content (0.1–10.0 wt.%) was investigated. The physicochemical properties of the photocatalysts were examined by XRD, DRS, BET and TEM/HRTEM. Preliminary tests were conducted to examine the photocatalytic efficiency of the synthesized MoS2/BiOCl composites towards VLS degradation in ultrapure water (UPW). It was found that the activity of pure BiOCl is improved with the addition of MoS2. The degradation rate was maximized with the use of the catalyst containing 0.25 wt.% MoS2. It was also found that the increase in catalyst concentration (50–1000 mg/L) enhances VLS degradation. It was found that VLS removal decreased by increasing VLS concentration. The effect of the water matrix on VLS removal was studied by carrying out experiments in real and synthetic water matrices. VLS degradation in UPW was faster than in bottled water (BW) and wastewater (WW), mainly due to the existence of organic matter in real aqueous media. Lastly, 0.25 wt.% MoS2/BiOCl showed great stability after 360 min of irradiation, serving as a promising catalyst for water remediation of emerging contaminants under solar irradiation.

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Section: Catalyst Activitymentioning

confidence: 99%

Photocatalytic Degradation of Valsartan by MoS2/BiOCl Heterojunctions

et al. 2021

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“…Reproduced with permission. [ 280 ] Copyright 2020, Elsevier Inc. d) Diagrammatic assembly of water disinfection plastic bags with the edge‐functionalized g‐C 3 N 4 (left); photographs of the disinfection bag modified by edge‐functionalized g‐C 3 N 4 (middle); schematic diagram of the bacterial inactivation by the edge‐functionalized g‐C 3 N 4 . Reproduced with permission.…”

Section: Immobility Of Photocatalystsmentioning

confidence: 99%

“…Following anodization, MoS 2 nanosheets were in situ loaded on the surface of TiO 2 tubes through hydrothermal treatment (Figure 17c). [ 280 ] The Ti meshes of centimeter‐size completely disinfected both E. coli and an antibiotic‐resistant S. aureus strain with a concentration of 8.5 log in 150 min.…”

Section: Immobility Of Photocatalystsmentioning

confidence: 99%

Solar‐Driven Photocatalytic Disinfection Over 2D Semiconductors: The Generation and Effects of Reactive Oxygen Species

Liu

Zeng

et al. 2020

Solar RRL

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Solar‐driven photocatalysis has been developing as a sustainable process and it holds appreciable promise to address the pollutants and risks posed by biohazards. The unique geometrical and electric features of 2D semiconductors have nurtured a variety of advanced photocatalytic bactericides where oxidative oxygen species are generated as the main disinfection reagents. Herein, the state‐of‐the‐art progress of solar‐driven photocatalytic disinfection based on 2D semiconductors with an emphasis on the generation and effects of various reactive oxygen species is summarized. Moreover, the immobility of the photocatalyst for practical applications is discussed. Finally, perspectives and challenges are presented to guide future research on photocatalytic disinfection.

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“…Since the thermal conductivity of the listed substrates is low, it leads to the rise in the thermal noise phenomenon and fluctuation of the effective barrier 2). The composite material has demonstrated good photocatalytic disinfection effect and recyclability and as such has a broad field of potential applications in water disinfection [55]. Gu et al reported on the preparation of novel WO 3 NRs/graphene/BiV 1−x Mo x O 4 heterojunction photoelectrode for photoelectrochemical water splitting.…”

Section: Heterojunctions With 1d Metal Oxides Semiconductorsmentioning

confidence: 99%

Review on the Properties of Boron-Doped Diamond and One-Dimensional-Metal-Oxide Based P-N Heterojunction

et al. 2020

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This review is mainly focused on the optoelectronic properties of diamond-based one-dimensional-metal-oxide heterojunction. First, we briefly introduce the research progress on one-dimensional (1D)-metal-oxide heterojunctions and the features of the p-type boron-doped diamond (BDD) film; then, we discuss the use of three oxide types (ZnO, TiO2 and WO3) in diamond-based-1D-metal-oxide heterojunctions, including fabrication, epitaxial growth, photocatalytic properties, electrical transport behavior and negative differential resistance behavior, especially at higher temperatures. Finally, we discuss the challenges and future trends in this research area. The discussed results of about 10 years’ research on high-performance diamond-based heterojunctions will contribute to the further development of photoelectric nano-devices for high-temperature and high-power applications.

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Binary composite MoS2/TiO2 nanotube arrays as a recyclable and efficient photocatalyst for solar water disinfection

Cited by 70 publications

References 59 publications

Photocatalytic Degradation of Valsartan by MoS2/BiOCl Heterojunctions

Photocatalytic Degradation of Valsartan by MoS2/BiOCl Heterojunctions

Solar‐Driven Photocatalytic Disinfection Over 2D Semiconductors: The Generation and Effects of Reactive Oxygen Species

Review on the Properties of Boron-Doped Diamond and One-Dimensional-Metal-Oxide Based P-N Heterojunction

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