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Tuning the band gap of M-doped titanate nanotubes (M = Fe, Co, Ni, and Cu): an experimental and theoretical study.

ABSTRACT: Herein, we report a systematic experimental and theoretical study about a wide-ranged band gap tuning of protonated titanate nanotubes H₂Ti₃O₇ (Ti-NT) by an easy ion-exchange method using a low concentration (1 wt%) of transition metal cations. To characterize and describe the effect of M doping (M = Cu²⁺, Ni²⁺, Co²⁺, and Fe³⁺) on the electronic, optical and structural properties, semiconductors were analyzed by a combination of experimental methods and density functional theory (DFT) calculations. The nanotube band gap can be modified from 1.5 to 3.3 eV, which opens the possibility to use them in several optoelectronic applications such as photocatalysts under solar light irradiation.

SUBMITTER: Mendez-Galvan M

PROVIDER: S-EPMC9419705 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature

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Tuning the band gap of M-doped titanate nanotubes (M = Fe, Co, Ni, and Cu): an experimental and theoretical study.

Méndez-Galván Melissa M Celaya Christian A CA Jaramillo-Quintero Oscar Andrés OA Muñiz Jesus J Díaz Gabriela G Lara-García Hugo A HA

Nanoscale advances 20201230 5

Herein, we report a systematic experimental and theoretical study about a wide-ranged band gap tuning of protonated titanate nanotubes H2Ti3O7 (Ti-NT) by an easy ion-exchange method using a low concentration (1 wt%) of transition metal cations. To characterize and describe the effect of M doping (M = Cu2+, Ni2+, Co2+, and Fe3+) on the electronic, optical and structural properties, semiconductors were analyzed by a combi ...[more]

PMID: 36132868

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