Catalytic and Light-Driven ZnO/Pt Janus Nano/Micromotors: Switching of Motion Mechanism via Interface Roughness and Defect Tailoring at the Nanoscale

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43918114" target="_blank" >RIV/60461373:22310/19:43918114 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/abs/10.1002/adfm.201808678" target="_blank" >https://onlinelibrary.wiley.com/doi/abs/10.1002/adfm.201808678</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adfm.201808678" target="_blank" >10.1002/adfm.201808678</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Catalytic and Light-Driven ZnO/Pt Janus Nano/Micromotors: Switching of Motion Mechanism via Interface Roughness and Defect Tailoring at the Nanoscale

Popis výsledku v původním jazyce

The first models of mesoporous ZnO/Pt Janus micromotors that show fuel-free and light-powered propulsion depending on the interface roughness are shown. Two models of ZnO semiconducting particles with distinct surface morphologies and pore structures are synthesized by self-aggregation of primary nanoparticles and nanosheets into nanoscale rough and smooth microparticles, respectively. The self-assembled nanosheet model (smooth) provides a large surface for the formation of a continuous Pt layer with strong adherence, whereas the discontinuous Pt species take place inside the inter-nanoparticles pores in the self-assembled nanoparticle model (rough). The effects of the interface, surface porosity, defect, and charge transfer on the light-powered motion for both well-designed mesoporous ZnO/Pt Janus micromotors are investigated and compared to find the underlying propulsion mechanisms. The degradation of two model pollutants is demonstrated as a proof-of-concept application of these carefully engineered Janus micromotors. In this work, it is shown that by discreet material fabrication together with semiconductor/metal interface charge transport interpretation, it would be possible to develop new light-driven Janus micromotors based on other photocatalysts containing active surfaces such as TiO2.

Název v anglickém jazyce

Catalytic and Light-Driven ZnO/Pt Janus Nano/Micromotors: Switching of Motion Mechanism via Interface Roughness and Defect Tailoring at the Nanoscale

Popis výsledku anglicky

The first models of mesoporous ZnO/Pt Janus micromotors that show fuel-free and light-powered propulsion depending on the interface roughness are shown. Two models of ZnO semiconducting particles with distinct surface morphologies and pore structures are synthesized by self-aggregation of primary nanoparticles and nanosheets into nanoscale rough and smooth microparticles, respectively. The self-assembled nanosheet model (smooth) provides a large surface for the formation of a continuous Pt layer with strong adherence, whereas the discontinuous Pt species take place inside the inter-nanoparticles pores in the self-assembled nanoparticle model (rough). The effects of the interface, surface porosity, defect, and charge transfer on the light-powered motion for both well-designed mesoporous ZnO/Pt Janus micromotors are investigated and compared to find the underlying propulsion mechanisms. The degradation of two model pollutants is demonstrated as a proof-of-concept application of these carefully engineered Janus micromotors. In this work, it is shown that by discreet material fabrication together with semiconductor/metal interface charge transport interpretation, it would be possible to develop new light-driven Janus micromotors based on other photocatalysts containing active surfaces such as TiO2.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/GA16-05167S" target="_blank" >GA16-05167S: Použití iontových svazků pro modifikace struktur založených na grafenu</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Advanced Functional Materials

ISSN

1616-301X

e-ISSN

—

Svazek periodika

29

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

—

Kód UT WoS článku

000476566300005

EID výsledku v databázi Scopus

2-s2.0-85063756468