DataVXACS Applied Nano MaterialsPaper
journal article·2024-05-10

TiO2 Nanosheet/In2S3 Nanosheet/Polydopamine Layered Composites for Constructing Enzymatic and Nonenzymatic Dual Sensors under Visible Light

Chide Zhang, Nan Zhang, Xiaohong Wang, Ming Gao, Delun Chen, Yi Li, Qiang Wu, Jinchun Tu

ACS Applied Nano Materials· Volume 7· Issue 9
Publisher page
Source abstract

Abstract

TiO 2 is an excellent photoelectric semiconductor that has a broad range of applications in photocatalysis and photoelectric sensing. Because of its wide band gap, TiO 2 can only be excited under UV light, limiting its application in biosensors. In this work, a TiO 2 nanosheet/In 2 S 3 nanosheet/PDA layered heterostructure was successfully constructed through a hydrothermal reaction and electropolymerization. In 2 S 3 and PDA were used to cosensitize TiO 2, and the composite band gap was successfully reduced to 2.36 eV. Besides, PDA could mitigate the photocorrosion of In 2 S 3 by isolating narrow-band-gap semiconductors from oxygen radicals. The sensitivity of the enzyme and nonenzyme biosensors at 470 nm visible light is 3.48 and 1.33 μA·mM –1 ·cm –2, respectively. These findings demonstrate the potential of constructing heterojunctions with multiple sensitizers as a promising approach to broaden the utility of TiO 2 as a visible-light-responsive sensor in the biological field.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materialsCompositesCatalysis & surfaces

OpenAlex topics: Advanced Nanomaterials in Catalysis · Quantum Dots Synthesis And Properties · Advanced biosensing and bioanalysis techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Advanced Materials of Tropical Island Resources, Ministry of Education, Hainan University, Haikou 570228, P. R. China

The Second Affiliated Hospital, School of Tropical Medicine, Hainan Medical University, Haikou 570311, P. R. China

The First Affiliated Hospital, Key Laboratory of Emergency and Trauma of Ministry of Education, Research Unit of Island Emergency Medicine, Chinese Academy of Medical Sciences (No. 2019RU013), Hainan Medical University, Haikou 570102, P. R. China

Funding

Hainan Provincial Department of Science and Technology · Chinese Academy of Medical Sciences · Natural Science Foundation of Hainan Province · National Natural Science Foundation of China · Hainan Province Clinical Medical Center · Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University

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