Heterostructured nanorod array with piezophototronic and plasmonic effect for photodynamic bacteria killing and wound healing

Yu, Xin; Wang, Shu; Zhang, Xiaodi; Qi, Anhui; Qiao, Xiran; Liu, Zhongfan; Wu, Mengqi; Li, Linlin; Wang, Zhong Lin

doi:10.1016/j.nanoen.2018.01.033

Cited by 144 publications

(87 citation statements)

References 46 publications

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“…[ 42 ] The fringe spacing of the Au NPs was ≈0.235 nm, corresponding to the (111) plane of cubic Au. [ 3,43 ] It was noteworthy that the seamless contacting between Au NPs and ZnO nanorod might facilitate the transfer of the LSPR electrons from the Au NPs to the ZnO nanorods.…”

Section: Resultsmentioning

confidence: 99%

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Enhanced Piezo‐Photoelectric Catalysis with Oriented Carrier Migration in Asymmetric Au−ZnO Nanorod Array

Xiang

Liu

et al. 2020

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Current photocatalytic semiconductors often have low catalytic performance due to limited light utilization and fast charge carrier recombination. Formation of Schottky junction between semiconductors and plasmonic metals can broaden the light absorption and facilitate the photon‐generated carriers separation. To further amplify the catalytic performance, herein, an asymmetric gold‐zinc oxide (Asy‐Au−ZnO) nanorod array is rationally designed, which realizes the synergy of piezocatalysis and photocatalysis, as well as spatially oriented electron−hole pairs separation, generating a significantly enhanced catalytic performance. In addition to conventional properties from noble metal/semiconductor Schottky junction, the rationally designed heterostructure has several additional advantages: 1) The piezoelectric ZnO under light and mechanical stress can directly generate charge carriers; 2) the Schottky barrier can be reduced by ZnO piezopotential to enhance the injection efficiency of hot electrons from Au nanoparticles to ZnO; 3) the unique asymmetric nanorod array structure can achieve a spatially directed separation and migration of the photon‐generated carriers. When ultrasound and all‐spectrum light irradiation are exerted simultaneously, the Asy‐Au−ZnO reaches the highest catalytic efficiency of 95% in 75 min for dye degradation. It paves a new pathway for designing unique asymmetric nanostructures with the synergy of photocatalysis and piezocatalysis.

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Section: Resultsmentioning

confidence: 99%

“…The binding energies of 87.7 and 84.0 eV were Au 4f 5/2 and Au 4f 7/2 (Figure 2c), respectively, attributed to the metallic Au 0 . [ 43 ] The binding energies of 1045.1 and 1022.0 eV were assigned to Zn 2p 1/2 and Zn 2p 3/2 states, respectively (Figure 2d). [ 14 ]…”

Section: Resultsmentioning

confidence: 99%

Enhanced Piezo‐Photoelectric Catalysis with Oriented Carrier Migration in Asymmetric Au−ZnO Nanorod Array

Xiang

Liu

et al. 2020

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“…1) Crystal phase. For example, Liu et al reported that orthorhombic KNbO 3 nanowire is about two times more active than its monoclinic counterparts in aqueous rhodamine B (RhB) and N ‐de‐ethylation degradation, by means of both experiments and DFT calculations, for the higher 7.6% in the former; [ 31 ] 2) Shape/morphology (like nanoparticle, [ 32 ] nanofiber, [ 33 ] nanowire, [ 14,34–36 ] nanorod, [ 37,38 ] nanoflower, [ 39 ] nanoplatelets, [ 40 ] microsphere, and nest‐like hollow microsphere [ 30 ] ). For example, Yu et al has revealed that the piezo‐polarization of KNbO 3 can be efficiently tuned by changing its poling configuration (nanosheets or nanocubes).…”

Section: Fundamentals Of Piezo‐phototronic Effect On Photoinduced Catmentioning

confidence: 99%

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Pan

Sun

Chen

et al. 2020

Advanced Energy Materials

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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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“…Sunlight, one of easily accessible, environmental friendly, and inexhaustible energy, has been thought to be an ideal power to initiate another energy production and pollution abatement . Especially, the semiconductor‐based photocatalysis has been proved to be a sustainable, renewable, and cost‐efficient technique to conquer above‐mentioned problems by implementing different catalytic reactions such as hydrogen evolution, carbon dioxide reduction, organic decomposition, nitrogen fixation, and bacterial disinfection with the help of sunlight. And the most critical role in photocatalysis technology is to develop highly efficient photocatalyst which possesses high light utilization efficiency and narrow bandgap.…”

Section: Introductionmentioning

confidence: 99%

Black Phosphorus, a Rising Star 2D Nanomaterial in the Post‐Graphene Era: Synthesis, Properties, Modifications, and Photocatalysis Applications

Lai

Zeng

et al. 2019

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Semiconductor photocatalysis, a sustainable and renewable technology, is deemed to be a new path to resolve environmental pollution and energy shortage. The development of effective photocatalysts, especially the metal‐free photocatalysts, is a critical determinant of this technique. The recently emerged 2D material of black phosphorus with distinctive properties of tunable direct bandgap, ultrahigh charge mobility, fortified optical absorption, large specific surface area, and anisotropic structure has captured enormous attention since the first exfoliation of bulk black phosphorus into mono‐ or few layered phosphorene in 2014. In this article, the state‐of‐the‐art preparation methods are first summarized for bulk black phosphorus, phosphorene, and black phosphorus quantum dot and then the fundamental structure and electronic and optical properties are analyzed to evaluate its feasibility as a metal‐free photocatalyst. Various modifications on black phosphorus are also summarized to enhance its photocatalytic performance. Furthermore, the multifarious applications such as solar to energy conversion, organic removal, disinfection, nitrogen fixation, and photodynamic therapy are discussed and some of the future challenges and opportunities for black phosphorus research are proposed. This review reveals that the rising star of black phosphorus will be a multifunctional material in the postgraphene era.

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Heterostructured nanorod array with piezophototronic and plasmonic effect for photodynamic bacteria killing and wound healing

Cited by 144 publications

References 46 publications

Enhanced Piezo‐Photoelectric Catalysis with Oriented Carrier Migration in Asymmetric Au−ZnO Nanorod Array

Enhanced Piezo‐Photoelectric Catalysis with Oriented Carrier Migration in Asymmetric Au−ZnO Nanorod Array

Advances in Piezo‐Phototronic Effect Enhanced Photocatalysis and Photoelectrocatalysis

Black Phosphorus, a Rising Star 2D Nanomaterial in the Post‐Graphene Era: Synthesis, Properties, Modifications, and Photocatalysis Applications

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