Ti3C2@TiO2/g-C3N4 heterojunction photocatalyst with improved charge transfer for enhancing visible-light NO selective removal

Zhang, Xingmao; Nie, Junli; Rao, Fei; Liu, Hongxia; Wang, Yijin; Qu, Danyao; Wu, Weiwei; Zhong, Peng; Zhu, Gangqiang

doi:10.1016/j.ceramint.2021.08.003

Cited by 21 publications

(8 citation statements)

References 46 publications

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“…The charge transfer mechanism was found by the characterization of • OH and O 2 •– using DMPO as a free-radical spin trapping agent in ESR. The signal for • OH was observed for Ag 2 O/Fe-MOF as the VB of Fe-MOF in Ag 2 O/Fe-MOF was observed to be more positive as compared to the standard redox potential of • OH/OH – (1.90 eV), which facilitates the generation of • OH radicals upon reacting with H 2 O . Further, the signal of O 2 •– for Fe-MOF was more intense as compared to Ag 2 O/Fe-MOF, which signifies that the photoinduced electrons prefer to produce H 2 by water splitting rather than react with O 2 to produce O 2 •– .…”

Section: Photocatalytic Plastic Upcyclingmentioning

confidence: 96%

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Upcycling of Plastic Waste Using Photo-, Electro-, and Photoelectrocatalytic Approaches: A Way toward Circular Economy

Sajwan,

Sharma,

Sharma

et al. 2024

ACS Catal.

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Rapid industrialization and development have led to a tremendous increase in the use of various types of plastic commodities in daily life. For the past several years, plastic pollution has become a global issue, posing a serious threat to mankind. The primary issue with increasing plastic pollution is the lack of proper management which has created huge havoc in the environment. From the initial phase of plastic waste management, plastic waste has been discarded, recycled, downcycled, or dumped into landfills in a large proportion, causing extreme damage to the ecosystem. Conventionally, plastic waste is treated via thermal processes such as pyrolysis or incineration plants which require a large amount of capital and, therefore, harms the aim of circular economy. Chemical upcycling is gaining large attention as a high-potential catalytic strategy to convert waste plastics, such as polyethylene terephthalate, polyethylene, polystyrene, etc. to various fuels, functionalized polymers, and other value-added chemicals having a direct impact on affordability and viability. In this review, we have focused on the use of photocatalysis, electrocatalysis, and photoelectrocatalysis as effective and efficient plastic upcycling technologies. These approaches can lower the dependence on nonrenewable resources and, therefore, are more environmentally friendly in contrast to the conventional approaches. This review elaborately discusses the pros and cons of the conventional approaches and provides a detailed overview of the potential of renewable energy-driven approaches for the conversion of plastic wastes to valuable fuels and commodity chemicals, along with the challenges and future directions of this emerging approach for plastic waste treatment.

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Section: Photocatalytic Plastic Upcyclingmentioning

confidence: 96%

“…The signal for • OH was observed for Ag 2 O/Fe-MOF as the VB of Fe-MOF in Ag 2 O/Fe-MOF was observed to be more positive as compared to the standard redox potential of • OH/OH − (1.90 eV), which facilitates the generation of • OH radicals upon reacting with H 2 O. 252 Further, the signal of O 2…”

Section: Photocatalytic Plastic Upcyclingmentioning

confidence: 96%

Upcycling of Plastic Waste Using Photo-, Electro-, and Photoelectrocatalytic Approaches: A Way toward Circular Economy

Sajwan,

Sharma,

Sharma

et al. 2024

ACS Catal.

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“…The following supporting information can be downloaded at: https: //www.mdpi.com/article/10.3390/catal12070785/s1, Figure S1 S1: Synthesis conditions of (001)TiO 2 /Ti 3 C 2 T x composites; Table S2: BET surface area and the corresponding pore volume and pore size of samples [48][49][50][51].…”

Section: Supplementary Materialsmentioning

confidence: 99%

Facile Preparation of Highly Active CO2 Reduction (001)TiO2/Ti3C2Tx Photocatalyst from Ti3AlC2 with Less Fluorine

Tan

et al. 2022

Catalysts

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To date, (001)TiO2/Ti3C2Tx hybridized photocatalyst is usually prepared through the complicated treatment of Ti3AlC2 in the presence of corrosive fluorine with a molar ratio of nF:nTi of more than 20. To reduce the use of corrosive fluorine, herein, exploiting beyond the conventional method, we report a facile synthetic method for (001)TiO2/Ti3C2Tx, elaborately using HF as both an etchant for Al elimination and a morphology control agent for the growth of (001)TiO2 nanosheets, with a sharply diminished use of fluorine (nF:nTi = 4:1) and simplified operation procedures. After optimization, the resulting (001)TiO2/Ti3C2Tx heterojunction exhibited markedly high photocatalytic activity with the CO2 reduction rate of 13.45 μmol g−1 h−1, which even surpasses that of P25 (10.95 μmol g−1 h−1), while the photoelectron selectivity to CH4 is approaching 92.84%. The superior photoactivity is interpreted as the fact that Ti3C2Tx with a lower work function induces photoinduced hole transfer and suppresses the charge recombination, thus facilitating the CO2 multi-electron reduction. This study provides a novel and simple synthesis for (001)TiO2/Ti3C2Tx towards sustainable energy transformations.

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“…The NO conversion rate of the composite catalyst is about four and three times higher than that of the pure Ti 3 C 2 MXene and the pure MIL‐100(Fe). Zhang et al [171] . constructed Ti 3 C 2 @TiO 2 /g‐C 3 N 4 nanohybrids to carry out the selective removal of NO and degradation of MB.…”

Section: Applicationmentioning

confidence: 99%

“…The NO conversion rate of the composite catalyst is about four and three times higher than that of the pure Ti 3 C 2 MXene and the pure MIL-100(Fe). Zhang et al [171] constructed Ti 3 C 2 @TiO 2 /g-C 3 N 4 nanohybrids to carry out the selective removal of NO and degradation of MB. The existence of n-n heterojunction and Schottky barrier in prepared material is the key to display enhanced performance in separating and transferring capacity of charge carriers.…”

Section: Photocatalysismentioning

confidence: 99%

Recent Trends in Synthesis and Applications of Porous MXene Assemblies: A Topical Review

Chen

Asif

Wang

et al. 2021

The Chemical Record

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MXene possesses high conductivity, excellent hydrophilicity, rich surface chemistry, hence holds great potential in various applications. However, MXene materials have low surface area utilization due to the agglomeration of ultrathin nanosheets. Assembling 2D MXene nanosheets into 3D multi‐level architectures is an effective way to circumvent this issue. Incorporation of MXene with other nanomaterials during the assembly process could rationally tune and tailor the specific surface area, porosity and surface chemistry of the MXene assemblies. The complementary and synergistic effect between MXene and nanomaterials could expand their advantages and make up for their disadvantages, thus boost the performance of 3D porous MXene composites. Herein, we summarize the recent progress in fabrication of porous MXene architectures from 2D to 3D, and also discuss the potential applications of MXene nanostructures in energy harvesting systems, sensing, electromagnetic interference shielding, water purification and photocatalysis.

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Ti3C2@TiO2/g-C3N4 heterojunction photocatalyst with improved charge transfer for enhancing visible-light NO selective removal

Cited by 21 publications

References 46 publications

Upcycling of Plastic Waste Using Photo-, Electro-, and Photoelectrocatalytic Approaches: A Way toward Circular Economy

Upcycling of Plastic Waste Using Photo-, Electro-, and Photoelectrocatalytic Approaches: A Way toward Circular Economy

Facile Preparation of Highly Active CO2 Reduction (001)TiO2/Ti3C2Tx Photocatalyst from Ti3AlC2 with Less Fluorine

Recent Trends in Synthesis and Applications of Porous MXene Assemblies: A Topical Review

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