Interfacial engineering of Ni-phytate and Ti3C2Tx MXene-sensitized TiO2 toward enhanced sterilization efficacy under 808 nm NIR light irradiation

Cheng, Jin; Sun, Dengning; Sun, Zhongti; Rao, Shaosheng; Wu, Zirui; Chen, Cheng; Liu, Lei; Liu, Qinqin; Yang, Juan

doi:10.1016/j.apcatb.2023.122613

Cited by 35 publications

(21 citation statements)

References 44 publications

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“…Considering the rapid recombination of photogenic carriers, only a few electrons were captured by surrounding species to form ROS. Referring to our previous research, Ti 3 C 2 T x -MXene exhibits a certain photothermal character due to the localized surface plasmon resonance (LSPR) effect. After the contact between CN and MXene, the Schottky junction can be formed at the MXene/CN interface because of the disparity of their work function values.…”

Section: Resultsmentioning

confidence: 72%

“…The mixed solution was rinsed with ethanol and deionized water (DI water) via centrifugation until the acidity and alkalinity (pH) were equal to 6. Lastly, the blank powder, dried in an oven, was multilayer MXene. , …”

Section: Methodsmentioning

confidence: 99%

“…Lastly, the blank powder, dried in an oven, was multilayer MXene. 24,25 Synthesis of a CN Nanosheet and a 2D/2D MXene/CN Composite Material. First, 10 g of urea and different masses of MXene (10, 20, and 30 mg) were fully dissolved in 20 mL of deionized (DI) water.…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…On the basis of our previous research, enhancing the efficiency of light-driven sterilization can be achieved by (1) expanding the light-adsorbing range, (2) improving the carrier separation and migration efficiency, and (3) generating heat to promote photocatalytic reactions. − In detail, the construction of heterojunctions using the disparity of their work functions can conspicuously prevent the recombination of photoexcited carriers. The photothermal effect can offer plenty of heat to photoelectrons, enhancing electron activity and improving the probability of collision with reactants, thus accelerating the actual photocatalytic process.…”

Section: Introductionmentioning

confidence: 99%

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In Situ Fabrication of a 2D/2D MXene/CN Heterojunction for Photothermally Assisted Photocatalytic Sterilization under Visible Light Irradiation

Jin,

Zhi,

Sun

et al. 2023

Inorg. Chem.

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Constructing an efficient visible light-responsive antibacterial material for water treatment remains a principal goal yet is a huge challenge. Herein, a 2D/2D heterojunction composite with robust interfacial contact, named MXene/CN (MCN), was controllably fabricated by using a urea molecule intercalated into MXene following an in situ calcination method, which can realize the rapid separation and migration of photogenerated carriers under visible light irradiation and significantly improve the carrier concentration of the MXene surface, thus generating more reactive oxygen species. The generation of heat induced by MXene could also increase photogenic electron activity to facilitate the photocatalytic reaction using in situ time-resolved photoluminescence characterization. The visible light-activated germicide exhibits a sterilization efficacy against Escherichia coli of 99.70%, higher than those of pure CN (60.21%) and MXene (31.75%), due to the effect of photothermally assisted photocatalytic treatment. This work is an attempt to construct a visible light-driven antimicrobial material using Schottky junctions achieving photothermally assisted photocatalytic disinfection.

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Section: Resultsmentioning

confidence: 72%

Section: Methodsmentioning

confidence: 99%

Section: ■ Experimental Sectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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In Situ Fabrication of a 2D/2D MXene/CN Heterojunction for Photothermally Assisted Photocatalytic Sterilization under Visible Light Irradiation

Jin,

Zhi,

Sun

et al. 2023

Inorg. Chem.

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“…Among various antibacterial technologies, photocatalytic disinfection, as a green and sustainable strategy, − has been widely promoted due to its rapid and efficient inactivation effect without obvious drug resistance and side effects, and the antibacterial process driven by solar energy is controllable, recyclable, and has a low cost. − As an exogenous antibacterial technology, it relies on induced generation of reactive oxygen radicals (superoxide radicals, hydroxyl radicals, etc.) to cause bacterial inactivation without chemical additives or harmful inactivation byproducts. , Therefore, we believe that the design of environmentally friendly and efficient semiconductor sterilization materials show broad application prospects, especially in water disinfection.…”

Section: Introductionmentioning

confidence: 99%

Universal Water Disinfection by the Introduction of Fe–N₃ Traps between g-C₃N₄ Layers under Visible Light

Wang

Zhao

et al. 2023

ACS Omega

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Efficient inactivation of bacteria in the sewage via a photocatalytic process represents a promising strategy for the efficient chemical utilization of solar energy. Herein, uniformly dispersed Fe atoms were embedded between layers of g-C3N4 photocatalysts (CNFx), which were facilely prepared by thermal treatment. The optimized photocatalyst (CNF100) first showed excellent photoactivity for killing a variety of bacteria (93.0% for E. coli, 93.9% for Salmonella, and 96.2% for S. aureus) under visible light irradiation. The superior activity can be attributed to the formation of shallow electron traps (Fe–N3) that can capture excitons of excited states, which promote the charge transfer and energy transfer process of activated adsorbed molecular oxygen, respectively, forming reactive oxygen species, improving separation efficiency of photoexcited electrons and holes, and the Fe–N3 traps can also be used as photosensitive sites to broaden the absorption range of visible light. This strategy of constructing shallow electronic traps lays a theoretical foundation for the design of new environmentally friendly and efficient water disinfectants.

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Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO₂ Reduction into Renewable Hydrocarbon Fuels

Tang,

Li,

et al. 2024

Adv Funct Materials

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Photocatalytic CO2 reduction into renewable hydrocarbon fuels is a green solution to address CO2 emission and energy issues simultaneously. However, the fast recombination of photogenerated charge carriers and the sluggish surface reaction kinetics restrict the efficiency of photocatalytic CO2 reduction. The emergence of 2D MXenes has potential in improving the efficiency of photocatalytic CO2 reduction, owing to their high electrical conductivity, flexible structural properties, and abundant active sites. Hence, this review will concisely summarize and highlight recent advances of MXenes‐based photocatalysts used in photocatalytic CO2 reduction. First, the synthesis and properties of MXenes is briefly introduced. Second, the mechanism of CO2 photoreduction along with the roles of MXenes in photocatalytic CO2 reduction are summarized, including promoting the adsorption of CO2, enhancing the separation of photo‐induced charge carriers, acting as a robust support, and photothermal effect. Third, different kinds of MXenes‐based photocatalysts such as MXenes/metal oxides, MXenes/nitrides, MXenes/LDH, MXenes/perovskite, and MXene‐derived photocatalysts for CO2 reduction are classified via the type of semiconductors. Finally, the challenges and perspectives are also presented, including exploring suitable MXenes via machine learning, uncovering the structure‐activity relationship by in situ, time‐ and space‐resolved characterization techniques, improving anti‐oxidization ability, and scale‐up applications.

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Interfacial engineering of Ni-phytate and Ti3C2Tx MXene-sensitized TiO2 toward enhanced sterilization efficacy under 808 nm NIR light irradiation

Cited by 35 publications

References 44 publications

In Situ Fabrication of a 2D/2D MXene/CN Heterojunction for Photothermally Assisted Photocatalytic Sterilization under Visible Light Irradiation

In Situ Fabrication of a 2D/2D MXene/CN Heterojunction for Photothermally Assisted Photocatalytic Sterilization under Visible Light Irradiation

Universal Water Disinfection by the Introduction of Fe–N₃ Traps between g-C₃N₄ Layers under Visible Light

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO₂ Reduction into Renewable Hydrocarbon Fuels

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Interfacial engineering of Ni-phytate and Ti3C2Tx MXene-sensitized TiO2 toward enhanced sterilization efficacy under 808 nm NIR light irradiation

Cited by 35 publications

References 44 publications

In Situ Fabrication of a 2D/2D MXene/CN Heterojunction for Photothermally Assisted Photocatalytic Sterilization under Visible Light Irradiation

In Situ Fabrication of a 2D/2D MXene/CN Heterojunction for Photothermally Assisted Photocatalytic Sterilization under Visible Light Irradiation

Universal Water Disinfection by the Introduction of Fe–N3 Traps between g-C3N4 Layers under Visible Light

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO2 Reduction into Renewable Hydrocarbon Fuels

Contact Info

Product

Resources

About

Universal Water Disinfection by the Introduction of Fe–N₃ Traps between g-C₃N₄ Layers under Visible Light

Recent Advances in Diverse MXenes‐Based Structures for Photocatalytic CO₂ Reduction into Renewable Hydrocarbon Fuels