Surface Functionalization of Grown-on-Tip ZnO Nanopyramids: From Fabrication to Light-Triggered Applications

Alberto Gasparotto, Chiara Maccato, Giorgio Carraro, Cinzia Sada, Urska Lavrencic Stangar, Bruno Alessi, Conor Rocks, Davide Mariotti, Andrea La Porta, Thomas Altantzis, Davide Barreca

Research output: Contribution to journalArticle

Abstract

Herein, we report on a combined chemical vapor deposition (CVD)/radio frequency (RF)-sputtering synthetic strategy for the controlled surface modification of ZnO nanostructures by Ti-containing species. Specifically, the proposed approach consists in the CVD of grown-on-tip ZnO nanopyramids, followed by titanium RF-sputtering under mild conditions. The results obtained by a thorough characterization demonstrate the successful ZnO surface functionalization with dispersed Ti-containing species in low amounts. This phenomenon, in turn, yields a remarkable enhancement of photo-activated superhydrophilic behaviour, self-cleaning ability and photocatalytic performances in comparison to bare ZnO. The reasons accounting for such an improvement are unravelled by a multi-technique analysis, elucidating the interplay between material chemico-physical properties and the corresponding functional behaviour. Overall, the proposed strategy stands as an amenable tool for the mastering of semiconductor-based functional nanoarchitectures through ad-hoc engineering of the system surface.
LanguageEnglish
JournalACS Applied Materials & Interfaces
Publication statusAccepted/In press - 9 Apr 2019

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Sputtering
Chemical vapor deposition
Fabrication
Titanium
Surface treatment
Cleaning
Nanostructures
Physical properties
Semiconductor materials

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Gasparotto, A., Maccato, C., Carraro, G., Sada, C., Lavrencic Stangar, U., Alessi, B., ... Barreca, D. (Accepted/In press). Surface Functionalization of Grown-on-Tip ZnO Nanopyramids: From Fabrication to Light-Triggered Applications. ACS Applied Materials & Interfaces.
Gasparotto, Alberto ; Maccato, Chiara ; Carraro, Giorgio ; Sada, Cinzia ; Lavrencic Stangar, Urska ; Alessi, Bruno ; Rocks, Conor ; Mariotti, Davide ; La Porta, Andrea ; Altantzis, Thomas ; Barreca, Davide. / Surface Functionalization of Grown-on-Tip ZnO Nanopyramids: From Fabrication to Light-Triggered Applications. In: ACS Applied Materials & Interfaces. 2019.
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abstract = "Herein, we report on a combined chemical vapor deposition (CVD)/radio frequency (RF)-sputtering synthetic strategy for the controlled surface modification of ZnO nanostructures by Ti-containing species. Specifically, the proposed approach consists in the CVD of grown-on-tip ZnO nanopyramids, followed by titanium RF-sputtering under mild conditions. The results obtained by a thorough characterization demonstrate the successful ZnO surface functionalization with dispersed Ti-containing species in low amounts. This phenomenon, in turn, yields a remarkable enhancement of photo-activated superhydrophilic behaviour, self-cleaning ability and photocatalytic performances in comparison to bare ZnO. The reasons accounting for such an improvement are unravelled by a multi-technique analysis, elucidating the interplay between material chemico-physical properties and the corresponding functional behaviour. Overall, the proposed strategy stands as an amenable tool for the mastering of semiconductor-based functional nanoarchitectures through ad-hoc engineering of the system surface.",
author = "Alberto Gasparotto and Chiara Maccato and Giorgio Carraro and Cinzia Sada and {Lavrencic Stangar}, Urska and Bruno Alessi and Conor Rocks and Davide Mariotti and {La Porta}, Andrea and Thomas Altantzis and Davide Barreca",
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Gasparotto, A, Maccato, C, Carraro, G, Sada, C, Lavrencic Stangar, U, Alessi, B, Rocks, C, Mariotti, D, La Porta, A, Altantzis, T & Barreca, D 2019, 'Surface Functionalization of Grown-on-Tip ZnO Nanopyramids: From Fabrication to Light-Triggered Applications', ACS Applied Materials & Interfaces.

Surface Functionalization of Grown-on-Tip ZnO Nanopyramids: From Fabrication to Light-Triggered Applications. / Gasparotto, Alberto; Maccato, Chiara; Carraro, Giorgio; Sada, Cinzia; Lavrencic Stangar, Urska; Alessi, Bruno; Rocks, Conor; Mariotti, Davide; La Porta, Andrea; Altantzis, Thomas; Barreca, Davide.

In: ACS Applied Materials & Interfaces, 09.04.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Surface Functionalization of Grown-on-Tip ZnO Nanopyramids: From Fabrication to Light-Triggered Applications

AU - Gasparotto, Alberto

AU - Maccato, Chiara

AU - Carraro, Giorgio

AU - Sada, Cinzia

AU - Lavrencic Stangar, Urska

AU - Alessi, Bruno

AU - Rocks, Conor

AU - Mariotti, Davide

AU - La Porta, Andrea

AU - Altantzis, Thomas

AU - Barreca, Davide

PY - 2019/4/9

Y1 - 2019/4/9

N2 - Herein, we report on a combined chemical vapor deposition (CVD)/radio frequency (RF)-sputtering synthetic strategy for the controlled surface modification of ZnO nanostructures by Ti-containing species. Specifically, the proposed approach consists in the CVD of grown-on-tip ZnO nanopyramids, followed by titanium RF-sputtering under mild conditions. The results obtained by a thorough characterization demonstrate the successful ZnO surface functionalization with dispersed Ti-containing species in low amounts. This phenomenon, in turn, yields a remarkable enhancement of photo-activated superhydrophilic behaviour, self-cleaning ability and photocatalytic performances in comparison to bare ZnO. The reasons accounting for such an improvement are unravelled by a multi-technique analysis, elucidating the interplay between material chemico-physical properties and the corresponding functional behaviour. Overall, the proposed strategy stands as an amenable tool for the mastering of semiconductor-based functional nanoarchitectures through ad-hoc engineering of the system surface.

AB - Herein, we report on a combined chemical vapor deposition (CVD)/radio frequency (RF)-sputtering synthetic strategy for the controlled surface modification of ZnO nanostructures by Ti-containing species. Specifically, the proposed approach consists in the CVD of grown-on-tip ZnO nanopyramids, followed by titanium RF-sputtering under mild conditions. The results obtained by a thorough characterization demonstrate the successful ZnO surface functionalization with dispersed Ti-containing species in low amounts. This phenomenon, in turn, yields a remarkable enhancement of photo-activated superhydrophilic behaviour, self-cleaning ability and photocatalytic performances in comparison to bare ZnO. The reasons accounting for such an improvement are unravelled by a multi-technique analysis, elucidating the interplay between material chemico-physical properties and the corresponding functional behaviour. Overall, the proposed strategy stands as an amenable tool for the mastering of semiconductor-based functional nanoarchitectures through ad-hoc engineering of the system surface.

M3 - Article

JO - ACS Applied Materials and Interfaces

T2 - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

SN - 1944-8244

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Gasparotto A, Maccato C, Carraro G, Sada C, Lavrencic Stangar U, Alessi B et al. Surface Functionalization of Grown-on-Tip ZnO Nanopyramids: From Fabrication to Light-Triggered Applications. ACS Applied Materials & Interfaces. 2019 Apr 9.