Significant Enhancement of Photoactivity in Hybrid TiO2/g-C3N4 Nanorod Catalysts Modified with Cu–Ni-Based Nanostructures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73592328" target="_blank" >RIV/61989592:15310/18:73592328 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/pdf/10.1021/acsanm.8b00078" target="_blank" >https://pubs.acs.org/doi/pdf/10.1021/acsanm.8b00078</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsanm.8b00078" target="_blank" >10.1021/acsanm.8b00078</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Significant Enhancement of Photoactivity in Hybrid TiO2/g-C3N4 Nanorod Catalysts Modified with Cu–Ni-Based Nanostructures

Popis výsledku v původním jazyce

Light-driven processes such as photocatalytic environmental remediation and photoelectrochemical (PEC) water splitting to produce hydrogen under sunlight are key technologies toward energy sustainability. Despite enormous efforts, a suitable photocatalyst fulfilling all the main requirements such as high photoactivity under visible light, chemical stability, environmental friendliness, and low cost has not been found yet. A promising approach to overcome these limitations is to use hybrid nanostructures showing improved activity and physicochemical properties when compared with single components. Herein, we present a novel photocatalytic nanocomposite system based on titania (TiO2): titania nanorod wrapped with Ni(OH)2 and Cu(OH)2 composite carbon nitride (CuNi@g-C3N4/TiO2). This carefully tuned photoanode nanostructure shows almost one order of magnitude higher photocurrent density compared to unsensitized TiO2 nanorods for PEC water splitting upon solar-light illumination. The heterostructured g-C3N4 strongly improves visible absorption of light, separation of electrons and holes, and surface catalysis due to the effect of Cu(OH)2 nanoparticles and Ni(OH)2 nanosheets, respectively. The improved photoperformance ascribed to the integrative cooperation effect of all the counterparts resulting in a one-dimensional hydrid nanostructured photoanode with improved light absorption, facile charge separation, and efficient surface catalysis toward PEC oxygen evolution.

Název v anglickém jazyce

Significant Enhancement of Photoactivity in Hybrid TiO2/g-C3N4 Nanorod Catalysts Modified with Cu–Ni-Based Nanostructures

Popis výsledku anglicky

Light-driven processes such as photocatalytic environmental remediation and photoelectrochemical (PEC) water splitting to produce hydrogen under sunlight are key technologies toward energy sustainability. Despite enormous efforts, a suitable photocatalyst fulfilling all the main requirements such as high photoactivity under visible light, chemical stability, environmental friendliness, and low cost has not been found yet. A promising approach to overcome these limitations is to use hybrid nanostructures showing improved activity and physicochemical properties when compared with single components. Herein, we present a novel photocatalytic nanocomposite system based on titania (TiO2): titania nanorod wrapped with Ni(OH)2 and Cu(OH)2 composite carbon nitride (CuNi@g-C3N4/TiO2). This carefully tuned photoanode nanostructure shows almost one order of magnitude higher photocurrent density compared to unsensitized TiO2 nanorods for PEC water splitting upon solar-light illumination. The heterostructured g-C3N4 strongly improves visible absorption of light, separation of electrons and holes, and surface catalysis due to the effect of Cu(OH)2 nanoparticles and Ni(OH)2 nanosheets, respectively. The improved photoperformance ascribed to the integrative cooperation effect of all the counterparts resulting in a one-dimensional hydrid nanostructured photoanode with improved light absorption, facile charge separation, and efficient surface catalysis toward PEC oxygen evolution.

Druh

J_ost - Ostatní články v recenzovaných periodicích

CEP obor

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OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

ACS Applied Nano Materials

ISSN

2574-0970

e-ISSN

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Svazek periodika

1

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

2526-2535

Kód UT WoS článku

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EID výsledku v databázi Scopus

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