Fabricating Ti3C2 MXene cocatalyst supported NiAl-LDH/g-C3N4 ternary nanocomposite for stimulating solar photocatalytic H2 production

Almusattar, Wael; Tahir, Muhammad Bilal; Madi, Mohamed; Tahir, Beenish

doi:10.1016/j.jece.2022.108010

Cited by 23 publications

(14 citation statements)

References 44 publications

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“…By etching Ti 3 AlC 2 with mixed strong acid, the (104) peak of Ti 3 AlC 2 disappeared and the XRD was consistent with that reported ( Figure a). [ 35–37 ] The (002) peak of the Ti 3 C 2 material shifted toward a small angle (Figure 1b). According to d = λ / (2sin θ ), etching makes Ti 3 C 2 possess a large interlayer spacing.…”

Section: Resultsmentioning

confidence: 99%

“…[ 39,40 ] In the fine spectrum of Cd 3d (Figure 3b), there are distinct diffraction peaks at 404.57 and 411.33 eV, attributed to the Cd 3d 5/2 and Cd 3d 3/2 orbitals, respectively. [ 35 41 ] In the fine spectrum of S 2p (Figure 3c), there are distinct diffraction peaks at 161.02 and 162.19 eV, attributed to the S 2p 3/2 and S 2p 1/2 orbitals, respectively. [ 42–44 ] In the fine spectrum of Ni 2p (Figure 3d), there are distinct diffraction peaks at 856.13 and 873.84 eV, attributed to the Ni 2p 3/2 and Ni 2p 1/2 orbitals, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Ti₃C₂ MXene Induced Efficient Electron Transfer over Bimetallic Sulfides and Layered Double Hydroxides

Jin

2023

Advanced Sustainable Systems

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With a large specific surface area and remarkable electrochemical capabilities, NiAl‐LDH is widely used in photocatalysis. The electrochemical performance of NiAl‐LDH can be further improved by introducing the appropriate amount of Ti3C2 MXene by hydrothermal method. And NiAl‐LDH@Ti3C2 is simply compounded with ZnCdS in a certain ratio to obtain ZnCdS/NiAl‐LDH@Ti3C2. By studying different ratios of ZCSNAT, the optimal ratio of hydrogen evolution activity is 27.10 mmol g−1 h−1 under alkaline solution, which is 9.96 and 1.67 times higher than ZCS and ZnCdS/NiAl‐LDH‐20, while ZnCdS/NiAl‐LDH@Ti3C2‐20 reaches 1883 µmol (37.66 mmol g−1 h−1) in acidic solution, 13.84 and 2.32 times higher than ZnCdS and ZnCdS/NiAl‐LDH‐20. This apparent enhancement is mainly due to the doping of Ti3C2 in the NiAl‐LDH preparation to achieve improved electrochemical properties of NiAl‐LDH. The better electron induction effect of NiAl‐LDH@Ti3C2 greatly improves the electron mobility to the NA surface, which results in a higher photogenerated electron–hole separation efficiency of the composite catalyst based on the original one.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Ti₃C₂ MXene Induced Efficient Electron Transfer over Bimetallic Sulfides and Layered Double Hydroxides

Jin

2023

Advanced Sustainable Systems

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“…Based on several studies, including Wael et al 112 and Fang Xu et al 113 g-C 3 N 4 received visible light irradiation, stimulating it and generating electron−hole pairs, as shown in eq 3. When g-C 3 N 4 was excited, electrons leaped to the conduction band (CB), leaving holes in the valence band (VB).…”

Section: Mechanism Of Photocatalytic Hydrogen Evolution Reaction (Her)mentioning

confidence: 99%

Titanium Carbide MXenes Cocatalyst with Graphitic Carbon Nitride for Photocatalytic H₂ Production, CO₂ Reduction, and Reforming Applications: A Review on Fundamentals and Recent Advances

et al. 2023

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Two-dimensional (2D) titanium carbide (Ti3C2) MXenes have gained increasing attention in photocatalytic applications due to their prominent electrical conductivity, optical properties, and abundant surface functional groups. The unique layered microstructure characteristics of Ti3C2 provide a large surface area, interlayer spacing, and hydrophilic surface functional groups, contributing to their high photocatalytic efficiency. Graphitic carbon nitride is very promising among the semiconductors due to its layered structure and higher reduction potential. The present study discusses the recent advances in various Ti3C2 structures coupled with g-C3N4 for hydrogen evolution reactions (HER), photocatalytic CO2 reduction reactions (CO2 RR), and CO2 reforming of methane (CO2 RM). Initially, we provide an overview of the fundamental properties of Ti3C2-based composites and recent synthesis approaches, including structure development, of functional group formation, and various etching agents. We further explore using Ti3C2 in different structures coupled with g-C3N4 as a binary and ternary composite with the involvement of other semiconductors and sensitizers. The performance of various composites for water splitting to produce hydrogen and reforming systems, including CO2 conversion with H2O, CO2 methanation, dry reforming of CH4 (DRM), and bireforming of CH4 (BRM), is discussed in detail. The hydrophilic surface functional groups and efficient electron transport pathways of Ti3C2 MXenes make them excellent candidates for catalysts with high yield rates and selectivity. Finally, this review provides valuable insights into the potential applications of Ti3C2-based composites, and future research directions in this field are proposed.

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“…Another design consideration to increase the potential of Ti 3 C 2 T x MXene is through interfacial/heterojunction engineering. The metallic nature and excellent electrical conductivity in Ti 3 C 2 T x MXene make it the most influential cocatalyst to assist the solar fuel conversion. − Ti 3 C 2 T x MXene could serve as an electron trapper through the creation of an electrostatic potential barrier at the Ti 3 C 2 T x MXene/semiconductor junction. This phenomenon is termed the Schottky barrier, where electrons that transfer from the semiconductor to Ti 3 C 2 T x MXene are trapped and unable to transfer back to the semiconductor counterpart and recombine with holes.…”

Section: Design Principles and Considerations For Ti3c2t X Mxene-bas...mentioning

confidence: 99%

Advances in Titanium Carbide (Ti₃C₂T_x) MXenes and Their Metal–Organic Framework (MOF)-Based Nanotextures for Solar Energy Applications: A Review

2022

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Introducing new materials with low cost and superior solar harvesting efficiency requires urgent attention to solve energy and environmental challenges. Titanium carbide (Ti3C2T x ) MXene, a 2D layered material, is a promising solution to solve the issues of existing materials due to their promising conductivity with low cost to function as a cocatalyst/support. On the other hand, metal–organic frameworks (MOFs) are emerging materials due to their high surface area and semiconducting characteristics. Therefore, coupling them would be promising to form composites with higher solar harvesting efficiency. Thus, the main objective of this work to disclose recent development in Ti3C2T x -based MOF nanocomposites for energy conversion applications to produce renewable fuels. MOFs can generate photoinduced electron/hole pairs, followed by transfer of electrons to MXenes through Schottky junctions for photoredox reactions. Currently, the principles, fundamentals, and mechanism of photocatalytic systems with construction of Schottky junctions are critically discussed. Then the basics of MOFs are discussed thoroughly in terms of their physical properties, morphologies, optical properties, and derivatives. The synthesis of Ti3C2T x MXenes and their composites with the formation of surface functionals is systematically illustrated. Next, critical discussions are conducted on design considerations and strategies to engineer the morphology of Ti3C2T x MXenes and MOFs. The interfacial/heterojunction modification strategies of Ti3C2T x MXenes and MOFs are then deeply discussed to understand the roles of both materials. Following that, the applications of MXene-mediated MOF nanotextures in view of CO2 reduction and water splitting for solar fuel production are critically analyzed. Finally, the challenges and a perspective toward the future research of MXene-based MOF composites are disclosed.

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Fabricating Ti3C2 MXene cocatalyst supported NiAl-LDH/g-C3N4 ternary nanocomposite for stimulating solar photocatalytic H2 production

Cited by 23 publications

References 44 publications

Ti₃C₂ MXene Induced Efficient Electron Transfer over Bimetallic Sulfides and Layered Double Hydroxides

Ti₃C₂ MXene Induced Efficient Electron Transfer over Bimetallic Sulfides and Layered Double Hydroxides

Titanium Carbide MXenes Cocatalyst with Graphitic Carbon Nitride for Photocatalytic H₂ Production, CO₂ Reduction, and Reforming Applications: A Review on Fundamentals and Recent Advances

Advances in Titanium Carbide (Ti₃C₂T_x) MXenes and Their Metal–Organic Framework (MOF)-Based Nanotextures for Solar Energy Applications: A Review

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Fabricating Ti3C2 MXene cocatalyst supported NiAl-LDH/g-C3N4 ternary nanocomposite for stimulating solar photocatalytic H2 production

Cited by 23 publications

References 44 publications

Ti3C2 MXene Induced Efficient Electron Transfer over Bimetallic Sulfides and Layered Double Hydroxides

Ti3C2 MXene Induced Efficient Electron Transfer over Bimetallic Sulfides and Layered Double Hydroxides

Titanium Carbide MXenes Cocatalyst with Graphitic Carbon Nitride for Photocatalytic H2 Production, CO2 Reduction, and Reforming Applications: A Review on Fundamentals and Recent Advances

Advances in Titanium Carbide (Ti3C2Tx) MXenes and Their Metal–Organic Framework (MOF)-Based Nanotextures for Solar Energy Applications: A Review

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Ti₃C₂ MXene Induced Efficient Electron Transfer over Bimetallic Sulfides and Layered Double Hydroxides

Ti₃C₂ MXene Induced Efficient Electron Transfer over Bimetallic Sulfides and Layered Double Hydroxides

Titanium Carbide MXenes Cocatalyst with Graphitic Carbon Nitride for Photocatalytic H₂ Production, CO₂ Reduction, and Reforming Applications: A Review on Fundamentals and Recent Advances

Advances in Titanium Carbide (Ti₃C₂T_x) MXenes and Their Metal–Organic Framework (MOF)-Based Nanotextures for Solar Energy Applications: A Review