TiO2/Ti3C2/g-C3N4 ternary heterojunction for photocatalytic hydrogen evolution

Hieu, Vu Quang; Lam, Truong Chi; Khan, Afrasyab; Vo, The Ky; Nguyen, Thanh-Quang; Doan, Van-Dat; Tran, Dai Lam; Le, Van Thuan; Tran, Vy Anh

doi:10.1016/j.chemosphere.2021.131429

Cited by 71 publications

(22 citation statements)

References 37 publications

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“…Similarly, in another work, efficient H 2 generation at a rate of 280 μmolg –1 was carried out in the presence of triethanolamine under visible light, where the intimate contact between the monolayer Ti 3 C 2 and g-C 3 N 4 nanosheets facilitated charge carrier separation . Another study was conducted under visible light for H 2 generation, where the TiO 2 /Ti 3 C 2 /g-C 3 N 4 nanocomposite constituted many surface sites and facilitated electron–hole pair separation . According to another study, Ag/TiO 2 /g-C 3 N 4 was able to produce 3100 μmolg –1 H 2 from triethanolamine under visible light based on carrier aggregation, the availability of catalytically active sites, and the coordination of the Ag + ions .…”

Section: Resultsmentioning

confidence: 98%

“…87 Another study was conducted under visible light for H 2 generation, where the TiO 2 /Ti 3 C 2 /g-C 3 N 4 nanocomposite constituted many surface sites and facilitated electron−hole pair separation. 88 According to another study, Ag/TiO 2 /g-C 3 N 4 was able to produce 3100 μmolg −1 H 2 from triethanolamine under visible light based on carrier aggregation, the availability of catalytically active sites, and the coordination of the Ag + ions. 89 By comparing all these findings with the current work, it is obvious that higher photoactivity as well as a good stability under a low intensity of a 35 W visible light source over the LaCoO 3 /pCN/TiO 2 @Ti 3 C 2 nanocomposite in the presence of 5% methanol is achieved based on efficient mobility and charge separation, good interfacial contact, charge separation, preserved redox abilities, and improved reduction reaction.…”

Section: Effect Of Sacrificial Agentsmentioning

confidence: 99%

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Constructing Exfoliated, Ti₃C₂T_x MXene-Dispersed, LaCoO₃ and pC₃N₄-Based Nanocomposites with In Situ Grown Titania through Etching/Oxidation for Stimulating Solar H₂ Production

Tasleem

Tahir

2023

Energy Fuels

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The use of a well-designed Ti 3 C 2 MXene with in situ embedded titania nanoparticles to construct a porous carbon nitride (pCN)/LaCoO 3 Z-scheme and S-scheme heterojunction for stimulating solar hydrogen production has been explored. A novel oxidized/etched approach was employed to produce MXene to maximize charge separation in LaCoO 3 perovskite-dispersed pCN. On increasing the HF etching time from 24 to 48 h, the amount of titania embedded over the MXene was increased, enabling 1.71 times more H 2 evolution. More importantly, integrated etched/ oxidized Ti 3 C 2 nanoflowers showed more reaction area with enhanced light absorption, which was more prominent with increased temperature. The H 2 evolution was significantly increased due to in situ embedded TiO 2 . Comparatively, optimized 15Ti 3 C 2 T x /pCN was found to be more efficient at lower temperatures, which was further increased 7-fold with a 10Ti 3 C 2 T x / pCN-coupled LaCoO 3 Z-scheme heterojunction. This obvious enhancement was evidently due to utilizing the maximum redox potential with good interface interaction among the components to promote charge carrier separation. Among the sacrificial agents, TEOA was found to be more promising, with 9.1 times more H 2 production due to its strong bond with amine-based pCN, which was further confirmed by quantum analysis. In conclusion, the Z-scheme photosystem is promising for efficient mobility and separation of charges and would also be beneficial for other solar energy applications.

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Section: Resultsmentioning

confidence: 98%

Section: Effect Of Sacrificial Agentsmentioning

confidence: 99%

Constructing Exfoliated, Ti₃C₂T_x MXene-Dispersed, LaCoO₃ and pC₃N₄-Based Nanocomposites with In Situ Grown Titania through Etching/Oxidation for Stimulating Solar H₂ Production

Tasleem

Tahir

2023

Energy Fuels

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“…These materials exhibit remarkable properties such as metallic conductivity, hydrophilicity, redox activity, good dispersibility, and photochemical stability . Among 100+ MXenes, Ti 3 C 2 T x has shown great promise, including in electromagnetic interference shielding, sensors, photocatalytics, and energy storage applications such as supercapacitors and Li-ion batteries …”

Section: Introductionmentioning

confidence: 99%

Role of ZnO in ZnO Nanoflake/Ti₃C₂ MXene Composites in Photocatalytic and Electrocatalytic Hydrogen Evolution

Saini

Harikrishna

Laishram

et al. 2022

ACS Appl. Nano Mater.

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Herein, we report a simple hydrothermal synthesis of ZnO-Ti3C2 MXene nanocomposites with a varying wt % of ZnO to exploit the synergistic effect of 2D layer structured Ti3C2 and semiconductor ZnO for photocatalysis and electrocatalysis applications. A systematic study on the efficiency of ZnO-Ti3C2 nanocomposites toward the degradation of organic pollutants (dyes and pharmaceuticals) and the hydrogen evolution reaction (HER) is demonstrated. Among the developed nanohybrid catalysts, the ZnO-Ti3C2 composite with 10 wt % ZnO (MXZnO-10) showed the highest photodegradation efficiency of 76.4% within 10 min of the reaction and 99.2% in 60 min for methylene blue (MB) dye. The synergistic interactions between 2D layered Ti3C2 and ZnO improved the lifetime of electrons and holes by reducing the recombination rate. The uncombined electrons and holes facilitated the effective degradation of the MB dye. The ZnO-Ti3C2 nanocomposite with 5 wt % ZnO (MXZnO-5) showed excellent HER performance and exhibited an overpotential of 495 mV at 10 mA/cm2 with a Tafel slope of 108 mV/dec. This work widens the application range of transition metal oxide–MXene composites, providing potential substitute materials for photocatalysis and electrocatalysis applications.

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“…Among current materials such as silica [8,9], metal organic frameworks [10][11][12][13][14][15], composites [16][17][18][19], and metal compounds [20][21][22], mesoporous silicon NPs have received considerable attention in the field of biomedical drug delivery due to their outstanding properties such as in vitro biocompatibility, in vivo biodegradability, and high photothermal activity [23,24]. A complete magnesiothermic reduction of mesoporous silica NPs (MSN) has provided a platform for the rational design of multifunctional silicon nanostructures for controlled and targeted delivery of therapeutic agents [25,26].…”

Section: Introductionmentioning

confidence: 99%

Dual Stimuli-Responsive Multifunctional Silicon Nanocarriers for Specifically Targeting Mitochondria in Human Cancer Cells

et al. 2022

Self Cite

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Specific targeting, selective stimuli-responsiveness, and controlled release of anticancer agents are requested for high therapeutic efficiency with a minimal adverse effect. Herein, we report the sophisticated synthesis and functionalization of fluorescent mesoporous silicon (FMPSi) nanoparticles decorated with graphene oxide (GO) nanosheets. GO-wrapped FMPSi (FMPSi@GO) was loaded with a cisplatin (Cis) anticancer agent, and Cis-loaded FMPSi@GO (FMPSi-Cis@GO) exhibited the dual stimuli (pH and NIR)-responsiveness of controlled drug release, i.e., the drug release rate was distinctly enhanced at acidic pH 5.5 than at neutral pH 7.0 and further enhanced under NIR irradiation at acidic pH condition. Notably, dequalinium-conjugated FMPSi-Cis@GO (FMPSi-Cis@GO@DQA) demonstrated an excellent specificity for mitochondrial targeting in cancer cells without noticeable toxicity to normal human cells. Our novel silicon nanocarriers demonstrated not only stimuli (pH and NIR)-responsive controlled drug release, but also selective accumulation in the mitochondria of cancer cells and destroying them.

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TiO2/Ti3C2/g-C3N4 ternary heterojunction for photocatalytic hydrogen evolution

Cited by 71 publications

References 37 publications

Constructing Exfoliated, Ti₃C₂T_x MXene-Dispersed, LaCoO₃ and pC₃N₄-Based Nanocomposites with In Situ Grown Titania through Etching/Oxidation for Stimulating Solar H₂ Production

Constructing Exfoliated, Ti₃C₂T_x MXene-Dispersed, LaCoO₃ and pC₃N₄-Based Nanocomposites with In Situ Grown Titania through Etching/Oxidation for Stimulating Solar H₂ Production

Role of ZnO in ZnO Nanoflake/Ti₃C₂ MXene Composites in Photocatalytic and Electrocatalytic Hydrogen Evolution

Dual Stimuli-Responsive Multifunctional Silicon Nanocarriers for Specifically Targeting Mitochondria in Human Cancer Cells

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TiO2/Ti3C2/g-C3N4 ternary heterojunction for photocatalytic hydrogen evolution

Cited by 71 publications

References 37 publications

Constructing Exfoliated, Ti3C2Tx MXene-Dispersed, LaCoO3 and pC3N4-Based Nanocomposites with In Situ Grown Titania through Etching/Oxidation for Stimulating Solar H2 Production

Constructing Exfoliated, Ti3C2Tx MXene-Dispersed, LaCoO3 and pC3N4-Based Nanocomposites with In Situ Grown Titania through Etching/Oxidation for Stimulating Solar H2 Production

Role of ZnO in ZnO Nanoflake/Ti3C2 MXene Composites in Photocatalytic and Electrocatalytic Hydrogen Evolution

Dual Stimuli-Responsive Multifunctional Silicon Nanocarriers for Specifically Targeting Mitochondria in Human Cancer Cells

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Resources

About

Constructing Exfoliated, Ti₃C₂T_x MXene-Dispersed, LaCoO₃ and pC₃N₄-Based Nanocomposites with In Situ Grown Titania through Etching/Oxidation for Stimulating Solar H₂ Production

Constructing Exfoliated, Ti₃C₂T_x MXene-Dispersed, LaCoO₃ and pC₃N₄-Based Nanocomposites with In Situ Grown Titania through Etching/Oxidation for Stimulating Solar H₂ Production

Role of ZnO in ZnO Nanoflake/Ti₃C₂ MXene Composites in Photocatalytic and Electrocatalytic Hydrogen Evolution