Boosting the Photocatalytic Ability of TiO Nanosheet Arrays for MicroRNA-155 Photoelectrochemical Biosensing by Titanium Carbide MXene Quantum Dots

Overview

Journal Nanomaterials (Basel)

Date 2022 Oct 27

PMID 36296747

Authors

Bingdong Yan

Zike Cheng

Caiyan Lai

Bin Qiao

Run Yuan

Chide Zhang

Hua Pei

Jinchun Tu

Qiang Wu

Affiliations

Soon will be listed here.

Abstract

The electrodes of two-dimensional (2D) titanium dioxide (TiO) nanosheet arrays were successfully fabricated for microRNA-155 detection. The (001) highly active crystal face was exposed to catalyze signaling molecules ascorbic acid (AA). Zero-dimensional (0D) titanium carbide quantum dots (TiCT QDs) were modified to the electrode as co-catalysts and reduced the recombination rate of the charge carriers. Spectroscopic methods were used to determine the band structure of TiO and TiCT QDs, showing that a type Ⅱ heterojunction was built between TiO and TiCT QDs. Benefiting the advantages of materials, the sensing platform achieved excellent detection performance with a wide liner range, from 0.1 pM to 10 nM, and a low limit of detection of 25 fM (S/N = 3).

Citing Articles

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