A highly efficient Au-MoS2 nanocatalyst for tunable piezocatalytic and photocatalytic water disinfection

Chou, Ting Mao; Chan, Shuen Wen; Lin, Yu Jiung; Yang, Po Kang; Liu, Chia-Chen; Lin, Yu Jhen; Wu, Jyh Ming; Lee, Jyun‐Ting; Lin, Zong‐Hong

doi:10.1016/j.nanoen.2018.12.006

Cited by 176 publications

(77 citation statements)

References 35 publications

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“…[ 93,95 ] Some researchers also demonstrated that MoS 2 can catalyze the production of reactive oxygen species to inactivate Escherichia coli bacteria up to 99.999% via piezo‐enhanced photocatalysis. [ 96 ] These works strongly demonstrate that the hybridization of piezoelectric and photocatalytic effects will lead to a performance much superior to that obtained with the individual ones.…”

Section: Piezoelectric Polarization Promoted Photo(electro)catalysismentioning

confidence: 96%

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Pan

Sun

Chen

et al. 2020

Advanced Energy Materials

433

236

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The storage/utilization of solar energy is a promising strategy to alleviate current disparities in energy shortage Direct conversion of solar light into chemical energy by means of photocatalysis or photoelectrocatalysis is currently a point of focus for sustainable energy development and environmental remediation. However, its current efficiency is still far from satisfying, suffering especially from severe charge recombination. To solve this problem, the piezo-phototronic effect has emerged as one of the most effective strategies for photo(electro)catalysis. Through the integration of piezoelectricity, photoexcitation, and semiconductor properties, the built-in electric field by mechanical stimulation induced polarization can serve as a flexible autovalve to modulate the charge-transfer pathway and facilitate carrier separation both in the bulk phase and at the surfaces of semiconductors. This review focuses on illustrating the trends and impacts of research based on piezo-enhanced photocatalytic reactions. The fundamental mechanisms of piezo-phototronics modulated band bending and charge migration are highlighted. Through comparing and classifying different categories of piezo-photocatalysts (like the typical ZnO, MoS 2 , and BaTiO 3 ), the recent advances in polarization-promoted photo(electro)catalytic processes involving water splitting and pollutant degradation are overviewed. Meanwhile the optimization methods to promote their catalytic activities are described. Finally, the outlook for future development of polarization-enhanced strategies is presented.

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Section: Piezoelectric Polarization Promoted Photo(electro)catalysismentioning

confidence: 96%

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Pan

Sun

Chen

et al. 2020

Advanced Energy Materials

433

236

View full text Add to dashboard Cite

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“…Benefiting from the these advantages, this composite catalyst killed 99.999% E. Coli within 15 min by harvesting the energy from visible light and vortex vibration. [ 147 ] Kumar et al revealed the direct bacterial disinfection by piezo‐photocatalysis of BaTiO 3 ceramic. [ 104 ] The bacterial disinfection took place on the surface of ceramic wafer under light irradiation (Figure 22c) and the photo‐sterilizing rate reached 100% within 30 min with the assistance of bending stress.…”

Section: Applications Of Piezocatalysis and Piezo‐photocatalysismentioning

confidence: 99%

Piezocatalysis and Piezo‐Photocatalysis: Catalysts Classification and Modification Strategy, Reaction Mechanism, and Practical Application

Guo

Zhang

et al. 2020

Adv Funct Materials

608

320

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Piezoelectric-based catalysis that relies on the charge energy or separation efficiency of charge carriers has attracted significant attention. The piezo-potential induced by strain or stress can induce a giant electric field, which has been demonstrated to be an effective means for charge energy shifting or transferring electrons and holes. In recent years, intense efforts have been made in this subject, and the research has mainly focussed on two aspects: i) Alteration of surface charge energy by piezo-potential in piezocatalysis; ii) the separation of photo-generated charge carriers and the catalytic activity enhancement of an integrated piezoelectric semiconductor or coupled system composed of piezoelectrics and semiconductors. Systematically summarizing the advances of the above two aspects is helpful in the context of deepening understanding of the relevant issues and developing new ideas for piezoelectric-based catalysis. In this review, a comprehensive summary on piezocatalysis and piezo-photocatalysis is provided. The charge transfer behaviors and catalytic mechanisms over a large variety of piezocatalysts and piezo-photocatalysts are systematically analyzed. In addition, the types of mechanical energy, strategies for enhancing piezocatalysis, and the advanced applications of piezocatalysis and piezophotocatalysis are discussed. Finally, the promising development directions of piezocatalysis and piezo-photocatalysis, such as materials, assembly forms, and applications in the future are proposed.

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“…Few-layered MoS 2 nanosheets (NSs) have the advantages of being able to harvest the whole spectrum of visible light (approximately 50% of solar energy) and have been reported to effectively generate photocatalytic reactions, which presented superior catalytic activity and disinfection performance owing mainly to prolonged electron-hole pair (EHP) lifetime. Chou et al (Ref 68 ) reported a single- and few-layered MoS 2 decorated with Au nanoparticles (NPS) as a new efficient nanocatalyst that can be simply activated by ambient mechanical force and light excited electron-hole pairs, as shown in Fig. 6 (a).…”

Section: Typical Photocatalytic Disinfection Materialsmentioning

confidence: 99%

“…(c) Disinfection performance of the control (pure bacteria), MoS 2 @CFs and Au-MoS 2 @CFs under visible-light irradiation. (d) Disinfection performance of Au-MoS 2 @CFs under a combination of mechanical vibration and IR light irradiation (Ref 68 ) …”

Section: Typical Photocatalytic Disinfection Materialsmentioning

confidence: 99%

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

et al. 2020

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There have been ever-growing demands for disinfection of water and air in recent years. Efficient, eco-friendly, and cost-effective methods of disinfection for pathogens are vital to the health of human beings. The photocatalysis route has attracted worldwide attention due to its highly efficient oxidative capabilities and sustainable recycling, which can be used to realize the disinfection purposes without secondary pollution. Though many studies have comprehensively reviewed the work about photocatalytic disinfection, including design and fabrication of photocatalytic coatings, inactivation mechanisms, or practical applications, systematic reviews about the disinfection photocatalysis coatings from fabrication to effort for practical use are still rare. Among different ways of fabricating photocatalytic materials, thermal spray is a versatile surface coating technique and competitive in constructing large-scale functional coatings, which is a most promising way for the future environmental purification, biomedical and life health applications. In this review, we briefly introduced various photocatalytic materials and corresponding inactivation mechanisms for virus, bacteria and fungus. We summarized the thermal-sprayed photocatalysts and their antimicrobial performances. Finally, we discussed the future perspectives of the photocatalytic disinfection coatings for potential applications. This review would shed light on the development and implementation of sustainable disinfection strategies that is applicable for extensive use for controlling pathogens in the near future.

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A highly efficient Au-MoS2 nanocatalyst for tunable piezocatalytic and photocatalytic water disinfection

Cited by 176 publications

References 35 publications

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Piezocatalysis and Piezo‐Photocatalysis: Catalysts Classification and Modification Strategy, Reaction Mechanism, and Practical Application

Thermal-Sprayed Photocatalytic Coatings for Biocidal Applications: A Review

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