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Updated: Jan 22, 2026

Assessing Disaster Resilience of Concrete with Titanium Dioxide Nanoparticles
Published on: November 14, 2025
Carbon dots decorated three-dimensionally ordered macroporous bismuth-doped titanium dioxide with efficient charge
Jing-Feng Li1, Chu-Yao Zhong1, Jia-Rong Huang1
1School of Chemistry and Chemical Engineering/Institute of Clean Energy and Materials, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, No. 230 Wai Huan Xi Road, Higher Education Mega Center, Guangzhou 510006, PR China.
Abstract:
Fast recombination of photo-generated carriers and limited photo-response have greatly hindered the development of TiO2-based photocatalysts. Herein, we present a ternary three-dimensionally ordered macroporous (3DOM) carbon dots (CDs)/Bi:TiO2 photocatalyst, which affords well-designed charge transmission and allows broad-spectrum absorption, thus delivering enhanced photocatalytic performance. The carbon dots act as effective electron extractors to accelerate the separation of electron-hole pairs, and pore engineering of the 3DOM Bi:TiO2 skeleton greatly promotes the response of light in the whole solar spectrum range. Impressively, the 3DOM CDs/Bi:TiO2 catalyst exhibits a greatly enhanced photocatalytic degradation performance toward phenol (92.7% in 2 h), and RhB (96.4% in 40 min) under full-spectra illumination, compared to the pristine 3DOM TiO2. This work provides a new design strategy for the optimization of carriers transmission pathway in high-quality and low-cost photocatalysts.
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