CdS/Ti3C2 heterostructure–based photoelectrochemical platform for sensitive and selective detection of trace amount of Cu2+

Cui, Yun; Xu, Fan; Ullah, Fateh; Wang, Minqiang

doi:10.1007/s00216-021-03870-y

Cited by 16 publications

(6 citation statements)

References 44 publications

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“…Ti 3 C 2 T x was prepared according to reported methods [ 40 , 41 ]. Specifically, LiF (0.5 g) was dissolved in 10 mL HCl (9 M) under room temperature.…”

Section: Methodsmentioning

confidence: 99%

“…Soft and restorative structures were introduced into COF block for the fabrication of CONs [ 37 , 38 ]. As a type of 2D material composed of transition metals, carbides, nitrides, or carbonitrides, MXene possesses excellent electrical conductivity, large surface area, and tunable surface terminal groups, and is widely used in optoelectronic fields such as photocatalysis [ 39 ] and PEC sensors [ 40 , 41 ]. Since aluminum (Al) layers are replaced with various functional groups (e.g., -OH, -O, and -F) during etching, MXene can be easily integrated with other highly conductive materials or semiconductors to build composite systems [ 42 , 43 ].…”

Section: Introductionmentioning

confidence: 99%

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Ultrathin Covalent Organic Framework Nanosheets/Ti3C2Tx-Based Photoelectrochemical Biosensor for Efficient Detection of Prostate-Specific Antigen

Wang

Chen

et al. 2022

Molecules

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Designable and ultrathin covalent organic framework nanosheets (CONs) with good photoelectric activity are promising candidates for the construction of photoelectrochemical (PEC) biosensors for the detection of low-abundance biological substrates. However, achieving highly sensitive PEC properties by using emerging covalent organic framework nanosheets (CONs) remains a great challenge due to the polymeric nature and poor photoelectric activity of CONs. Herein, we report for the first time the preparation of novel composites and their PEC sensing properties by electrostatic self-assembly of ultrathin CONs (called TTPA-CONs) with Ti3C2Tx. The prepared TTPA-CONs/Ti3C2Tx composites can be used as photocathodes for PEC detection of prostate-specific antigen (PSA) with high sensitivity, low detection limit, and good stability. This work not only expands the application of CONs but also opens new avenues for the development of efficient PEC sensing platforms.

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“…Ti 3 C 2 T x was prepared according to reported methods [ 40 , 41 ]. Specifically, LiF (0.5 g) was dissolved in 10 mL HCl (9 M) under room temperature.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ultrathin Covalent Organic Framework Nanosheets/Ti3C2Tx-Based Photoelectrochemical Biosensor for Efficient Detection of Prostate-Specific Antigen

Wang

Chen

et al. 2022

Molecules

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“…Among numerous semiconductor photocatalysts, cadmium sulfide (CdS), as a traditional narrow band gap semiconductor (about 2.4 eV), has been broadly used in various photoreactions. ,− Also, the Ce 4+ /Ce 3+ redox pair in CeO 2 can effectively promote the separation of photogenerated holes and electrons. Importantly, the VB and CB of CdS are 1.81 eV and −0.47 eV, respectively, which are higher than those of CeO 2 (2.51 and −0.37 eV). , Inspired by these, and according to our research foundation in the thermocatalytic synthesis of imines ,−, and ceria-based (photo)catalyst, , we have successfully prepared cerium dioxide-modified cadmium sulfide photocatalysts in this work. Under visible light irradiation at room temperature, CdS/CeO 2 -200 °C enables atom-economic photocatalysis of the oxidative coupling of alcohols and amines to imines.…”

Section: Introductionmentioning

confidence: 92%

“…37,−39 Also, the Ce 4+ /Ce 3+ redox pair in CeO 2 can effectively promote the separation of photogenerated holes and electrons. Importantly, the VB and CB of CdS are 1.81 eV and −0.47 eV, respectively, 40 which are higher than those of CeO 2 (2.51 and −0.37 eV). 41,42 Inspired by these, and according to our research foundation in the thermocatalytic synthesis of imines 26,−28,43 and ceria-based (photo)catalyst, 44,45 we have successfully prepared cerium dioxide-modified cadmium sulfide photocatalysts in this work.…”

Section: ■ Introductionmentioning

confidence: 99%

Ce⁴⁺/Ce³⁺ Redox Effect-Promoted CdS/CeO₂ Heterojunction Photocatalyst for the Atom Economic Synthesis of Imines under Visible Light

Sun,

Song,

Wen

et al. 2023

Inorg. Chem.

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The employment of stoichiometric alcohols and amines for imine synthesis under mild and green reaction conditions is still a challenge in the field. In this work, based on our research foundation in the thermocatalytic synthesis of imines over ceria, a CdS/CeO2 heterojunction photocatalyst was constructed and successfully realized the atom-economic synthesis of imines under visible light without additives at room temperature. Mechanistic experiments and corresponding characterizations indicated that the CdS/CeO2 heterojunction can improve the separation efficiency of photogenerated carriers, which can be further enhanced by the Ce4+/Ce3+ redox pair by rapidly combining photogenerated e–. The in situ-reduced Ce3+ can better activate O2 to form Ce–O–O·, which, together with h+, efficiently accelerates alcohol oxidation, which is the rate-determined step for the synthesis of imines via oxidative coupling reaction of alcohol and amine. In addition, our photocatalyst exhibited fairly decent reusability and substrate universality. This work solves problems of using base additives and excess amine or alcohol in the reported photocatalytic systems and provides new insight for designing CeO2-based photocatalytic oxidation catalysts.

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“…Figure 4 indicates the synthetic process of the novel 2D/2D Ti 3 C 2 /Bi 2 WO 6 heterostructure. Ye et al [ 76 ] synthesized CdS/Ti 3 C 2 heterostructures by the hydrothermal method to construct a Cu 2+ sensor based on photoelectrochemical (PEC) detection. The results indicated that the sensor has a sensitive response, low detection limit, and great photocurrent signal, owing to the benefits from the improved carrier transport at the interface of the CdS/Ti 3 C 2 heterostructure.…”

Section: Fabrication Of Mxene-based Heterostructuresmentioning

confidence: 99%

Recent Research Progress in the Structure, Fabrication, and Application of MXene-Based Heterostructures

Yang

Chen

et al. 2022

Nanomaterials

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Two-dimensional (2D) materials have received increasing attention in the scientific research community owing to their unique structure, which has endowed them with unparalleled properties and significant application potential. However, the expansion of the applications of an individual 2D material is often limited by some inherent drawbacks. Therefore, many researchers are now turning their attention to combine different 2D materials, making the so-called 2D heterostructures. Heterostructures can integrate the merits of each component and achieve a complementary performance far beyond a single part. MXene, as an emerging family of 2D nanomaterials, exhibits excellent electrochemical, electronic, optical, and mechanical properties. MXene-based heterostructures have already been demonstrated in applications such as supercapacitors, sensors, batteries, and photocatalysts. Nowadays, increasing research attention is attracted onto MXene-based heterostructures, while there is less effort spent to summarize the current research status. In this paper, the recent research progress of MXene-based heterostructures is reviewed, focusing on the structure, common preparation methods, and applications in supercapacitors, sensors, batteries, and photocatalysts. The main challenges and future prospects of MXene-based heterostructures are also discussed to provide valuable information for the researchers involved in the field.

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CdS/Ti3C2 heterostructure–based photoelectrochemical platform for sensitive and selective detection of trace amount of Cu2+

Cited by 16 publications

References 44 publications

Ultrathin Covalent Organic Framework Nanosheets/Ti3C2Tx-Based Photoelectrochemical Biosensor for Efficient Detection of Prostate-Specific Antigen

Ultrathin Covalent Organic Framework Nanosheets/Ti3C2Tx-Based Photoelectrochemical Biosensor for Efficient Detection of Prostate-Specific Antigen

Ce⁴⁺/Ce³⁺ Redox Effect-Promoted CdS/CeO₂ Heterojunction Photocatalyst for the Atom Economic Synthesis of Imines under Visible Light

Recent Research Progress in the Structure, Fabrication, and Application of MXene-Based Heterostructures

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CdS/Ti3C2 heterostructure–based photoelectrochemical platform for sensitive and selective detection of trace amount of Cu2+

Cited by 16 publications

References 44 publications

Ultrathin Covalent Organic Framework Nanosheets/Ti3C2Tx-Based Photoelectrochemical Biosensor for Efficient Detection of Prostate-Specific Antigen

Ultrathin Covalent Organic Framework Nanosheets/Ti3C2Tx-Based Photoelectrochemical Biosensor for Efficient Detection of Prostate-Specific Antigen

Ce4+/Ce3+ Redox Effect-Promoted CdS/CeO2 Heterojunction Photocatalyst for the Atom Economic Synthesis of Imines under Visible Light

Recent Research Progress in the Structure, Fabrication, and Application of MXene-Based Heterostructures

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Ce⁴⁺/Ce³⁺ Redox Effect-Promoted CdS/CeO₂ Heterojunction Photocatalyst for the Atom Economic Synthesis of Imines under Visible Light