Increase and enrichment of active electrons by carbon dots induced to improve TiO2 photocatalytic hydrogen production activity

Huang, Xiaolin; Sun, Lianhang; Liu, Xing; Min, Gao; Zhao, Bin; Bai, Yibing; Wang, Yuning; Han, Shiyan; Li, Yudong; Han, Youqi; Zhang, Chunlei

doi:10.1016/j.apsusc.2023.157494

Cited by 16 publications

(1 citation statement)

References 47 publications

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“…3), which matched with SEM images. The lattice spacing of 0.33 nm in the corresponding HRTEM image corresponds to the lattice spacing of the (110) plane of rutile TiO 2 38 (Fig. 3(c)), confirming that TiO 2 was successfully pillared with I/S.…”

Section: Resultsmentioning

confidence: 65%

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Yang¹,

Wang²,

Xie³

et al. 2023

New J. Chem.

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Section: Resultsmentioning

confidence: 65%

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Yang¹,

Wang²,

Xie³

et al. 2023

New J. Chem.

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Preparation of Ti₄O₇/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification

Li,

Gong,

Hossain

et al. 2024

Asia-Pacific J Chem Eng

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The construction of high‐efficiency self‐supported ceramic photoelectrode based on ideal semiconductor materials is essential for achieving effective degradation of pollutants by photoelectrocatalysis (PEC) technology. Herein, a Ti4O7/h‐BN composite ceramic photoelectrode with a unique microstructure was fabricated by a step‐by‐step calcination process and used in PEC water pollution remediation. The PEC activity of Ti4O7 ceramic photoelectrode could be enhanced by introducing hexagonal boron nitride (h‐BN) nanoparticles on the surface. The most optimized Ti4O7/h‐BN photoelectrode exhibited the decolorization rate of active brilliant blue KN‐R at about 97.79% in 30 min. The PEC activities could remain stable during five degradation cycles. The excellent photoelectrocatalytic performance of Ti4O7/h‐BN ceramic photoelectrode could be attributed to the low Tafel slope, low charge transfer resistance, large electrochemical active area, and excellent photo‐generated carrier separation efficiency. A type‐II heterojunction was formed between the Ti4O7 and h‐BN, which caused more effective carrier separation and enhanced the generation of dominant active species •O2− and h+. This work provided a mature synthesis strategy of Ti4O7/h‐BN self‐supported ceramic photoelectrodes with excellent practical application prospects to achieve superior PEC performance for water purification.

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Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review

You,

Zou,

Jiang

et al. 2024

Carbon Neutralization

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Carbon quantum dots (CQDs) have emerged as prominent contenders in the realm of luminescent nanomaterials over the past decade owing to their tunable optical properties, robust photostability, versatile surface functionalization and doping potential, low toxicity, and straightforward synthesis utilizing environmentally friendly precursors. In this review, we commence with a concise introduction, presenting both top‐down and bottom‐up strategies for the eco‐friendly synthesis of CQDs. Subsequently, we delve into a comprehensive examination of CQDs' structure and optical characteristics, encompassing their ultraviolet–visible absorption properties, surface confinement effects, and surface state emissions contributing to room‐temperature photoluminescence (PL). This review proceeds to elucidate recent advancements in modification strategies for CQDs, specifically focusing on surface oxidation, passivation, and the incorporation of heteroatoms. These strategies serve to afford control over the physicochemical properties, facilitating the enhancement of PL through the decoration of highly visible‐responsive CQDs. This enhancement is achieved by suppressing the nonradiative recombination of electron‐hole pairs, enabling red/blue shifts in CQDs for the generation of a full‐color emission spectrum, and regulating the band‐gap and surface states to broaden the photoabsorption range. Finally, we offer an overview of the most recent developments in the applications of fluorescent CQDs, emphasizing their utility in biomedicine, fluorescent sensors, lighting, and displays, as well as photocatalysis.

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Increase and enrichment of active electrons by carbon dots induced to improve TiO2 photocatalytic hydrogen production activity

Cited by 16 publications

References 47 publications

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Preparation of Ti₄O₇/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification

Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review

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Increase and enrichment of active electrons by carbon dots induced to improve TiO2 photocatalytic hydrogen production activity

Cited by 16 publications

References 47 publications

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Carbon modified Ti(I/S) composites and their photocatalytic degradation of rhodamine B

Preparation of Ti4O7/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification

Fluorescent carbon quantum dots with controllable physicochemical properties fantastic for emerging applications: A review

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About

Preparation of Ti₄O₇/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification