Boosting photocatalytic activity of CdLa2S4/ZnIn2S4 S-scheme heterojunctions with spatial separation of photoexcited carries

Meng, Dong; Yu, Huijun; Chen, Wenhan; Qu, Kongyu-Ang; Zhai, Dong; Liu, Chengcheng; Zhao, Shan; Wang, Shuguang; He, Zuoli

doi:10.1016/j.cej.2023.144240

Cited by 57 publications

(12 citation statements)

References 76 publications

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“…The photoluminescence (PL) confirms the recombination of electron-hole pairs due to band structure and exchange interfaces of CdLa 2 S 4 [27,28]. The optimization of LaNiO 3 /CdLa 2 S 4 through photocatalyst process obligate the photocatalytic reaction for CO 2 -to-CO conversion and highlights the importance of LaNiO 3 /CdLa 2 S 4 heterojunction for photogenerated electron-hole pairs [29]. Later, solar to hydrogen energy conversion has been done through photocatalytic water splitting by using the photocatalytic agents CdLa 2 S 4 and CdLa 2 Se 4 [30,31].…”

Section: Introductionmentioning

confidence: 78%

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Study of electronic, mechanical, thermodynamic, optical, and thermoelectric properties of CdLa₂X₄ (X = S, Se, Te) chalcogenides for solar cells and energy applications

Hedhili,

Hakami,

Albaqawi

et al. 2024

Phys. Scr.

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Spinels chalcogenides are an emerging aspirant for renewable energy which attained huge potential from the last decade. Therefore, the electronic structure, and mechanical properties are discussed with PBEsol approximation. The Born stability criteria, and formation has been computed to assure mechanical, and thermodynamic stabilities. The ductile nature, hardness, Debye temperature, and lattice thermal conductivities are addressed in terms of elastic constants, and elastic modulus. To obtain the accurate band gaps for optical, and thermoelectric characteristics modified potential (TB-mBJ) has been applied. The band gaps (2.0, 1.7, 0.85) eV for CdLa2X4 (X = S, Se, Te) have been calculated from band structures. The polarization of light, absorption bands in visible regions, refractive index, and reflection of light energy have made them significantly important materials for solar cells. Furthermore, transport characteristics are revealed by Seebeck coefficient, electrical & thermal conductivities, and figure of merit.

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Section: Introductionmentioning

confidence: 78%

“…The CdLa 2 S 4 has a band gap in the visible absorption range which make it an auspicious photocatalyst for solar splitting, and decay hydrogen, and organic pollutants. Therefore, the organic degradation capacity of CdLa 2 S 4 , and reduction behavior of ZnIn 2 S 4 were functionalized for photocatalytic hydrogen production [29].…”

Section: Introductionmentioning

confidence: 99%

Study of electronic, mechanical, thermodynamic, optical, and thermoelectric properties of CdLa₂X₄ (X = S, Se, Te) chalcogenides for solar cells and energy applications

Hedhili,

Hakami,

Albaqawi

et al. 2024

Phys. Scr.

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“…When CdSe is insufficient, the contact area between the two semiconductors is smaller, which is not conducive to the separation of photogenerated electrons and holes. On the other hand, when there is an excess amount of CdSe, the “shielding effect” occurs, resulting in lower charge separation efficiency for the composite material. – In order to ensure the sensor surface has optimal electron transfer efficiency, the decreasing amount of photoactive material on the electrode surface was also optimized. As depicted in Figure S4B, the photocurrent response of the sensor started to weaken after the drop addition of the photoactive material increased to 10 μL.…”

Section: Resultsmentioning

confidence: 99%

Distance-Regulated Photoelectrochemical Sensor “Signal-On” and “Signal-Off” Transitions for the Multiplexed Detection of Viruses Exposed in the Aquatic Environment

Li,

Wang

et al. 2023

Anal. Chem.

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Photochemical (PEC) sensors were severely limited for multiplex detection applications due to the cross interference between multiplex signals at the single recognition interface. In this work, a distance-regulated PEC sensor was developed for multiplex detection by using an i-Motif sequence with conformational transformation activity as the signal transduction unit. Through dynamic regulation of the spatial distance between the end site of the functional sequence and the electrode material, the photogenerated electrons on the surface of the sensor were directionally transferred. Thus, a PEC sensor with "signal-on" and "signal-off" dual signal output modes was developed for simultaneous detection of multitarget molecules. Combining isothermal nucleic acid amplification, the PEC sensor constructed in this work was successfully applied to the detection of two virus (Norovirus and Rotavirus) nucleic acid sequences. Under the optimal condition, this bioassay protocol exhibits a linear range of 0.01−100 nM for both viruses with detection limits of 0.72 and 0.53 pM, respectively. In this study, a stimulus-mediated distance regulation strategy successfully addressed the transduction of multiplex detection signals at the single recognition interface of the PEC sensor. It is expected that the technical barriers to multiplex detection of PEC sensors will be overcome and the application of PEC sensing technology will be expanded in the field of environmental analysis.

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“…The work function of semiconductor was an important parameter, which determined the direction of electron transfer in photocatalysts in the process of photocatalytic reactions. 53 It was defined as the energy of stationary electrons in vacuum (E VAC ) minus the Fermi level (E F ) of the metal (eq 6).…”

Section: ■ Introductionmentioning

confidence: 99%

Twin S-Scheme g-C₃N₄/CuFe₂O₄/ZnIn₂S₄ Heterojunction with a Self-Supporting Three-Phase System for Photocatalytic CO₂ Reduction: Mechanism Insight and DFT Calculations

Liu,

Jiang,

Chen

et al. 2024

ACS Catal.

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The use of photocatalytic solar energy to drive CO 2 reduction is beneficial for addressing fossil fuel shortages and environmental pollution issues. We synthesized a twin S-scheme g-C 3 N 4 /CuFe 2 O 4 /ZnIn 2 S 4 heterojunction, which was used to construct a self-supporting three-phase system for photocatalytic CO 2 reduction. Two built-in electric fields in this heterojunction induced effective migration of photogenerated carriers, resulting in a wide light response range and strong oxidation ability. This twin S-scheme photocatalytic system without a sacrificial agent had high CH 4 selectivity (96.8%) and surprise production rate of CH 4 (267.4 μmol g −1 h −1 ), and still maintained an excellent cycle rate (249−267.4 μmol g −1 h −1 ) during five cycles. In addition, g-C 3 N 4 /CuFe 2 O 4 /ZnIn 2 S 4 heterojunction possessed both hydrophilicity and hydrophobicity, which achieved an efficient transformation of CO 2 into CH 4 by controlling interface wettability. g-C 3 N 4 as a hydrophobic layer promoted CO 2 mass transfer to achieve the enrichment of CO 2 on the heterojunction surface; ZnIn 2 S 4 as a hydrophilic layer could well adsorb H 2 O, which was further oxidized by the photogenerated holes into many protons (H + ). Finally, DFT calculations found that Fe−N bonds located between g-C 3 N 4 and CuFe 2 O 4 played a crucial role during the photocatalytic CO 2 reduction. They served as a bridge for electron transfer to induce the bending adsorption of CO 2 , which enhanced the adsorption of *CO and stabilization of *H. KEYWORDS: g-C 3 N 4 /CuFe 2 O 4 /ZnIn 2 S 4 photocatalyst, twin S-scheme heterojunction, self-supporting three-phase system, photocatalytic CO 2 reduction, DFT calculations

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Boosting photocatalytic activity of CdLa2S4/ZnIn2S4 S-scheme heterojunctions with spatial separation of photoexcited carries

Cited by 57 publications

References 76 publications

Study of electronic, mechanical, thermodynamic, optical, and thermoelectric properties of CdLa₂X₄ (X = S, Se, Te) chalcogenides for solar cells and energy applications

Study of electronic, mechanical, thermodynamic, optical, and thermoelectric properties of CdLa₂X₄ (X = S, Se, Te) chalcogenides for solar cells and energy applications

Distance-Regulated Photoelectrochemical Sensor “Signal-On” and “Signal-Off” Transitions for the Multiplexed Detection of Viruses Exposed in the Aquatic Environment

Twin S-Scheme g-C₃N₄/CuFe₂O₄/ZnIn₂S₄ Heterojunction with a Self-Supporting Three-Phase System for Photocatalytic CO₂ Reduction: Mechanism Insight and DFT Calculations

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Boosting photocatalytic activity of CdLa2S4/ZnIn2S4 S-scheme heterojunctions with spatial separation of photoexcited carries

Cited by 57 publications

References 76 publications

Study of electronic, mechanical, thermodynamic, optical, and thermoelectric properties of CdLa2X4 (X = S, Se, Te) chalcogenides for solar cells and energy applications

Study of electronic, mechanical, thermodynamic, optical, and thermoelectric properties of CdLa2X4 (X = S, Se, Te) chalcogenides for solar cells and energy applications

Distance-Regulated Photoelectrochemical Sensor “Signal-On” and “Signal-Off” Transitions for the Multiplexed Detection of Viruses Exposed in the Aquatic Environment

Twin S-Scheme g-C3N4/CuFe2O4/ZnIn2S4 Heterojunction with a Self-Supporting Three-Phase System for Photocatalytic CO2 Reduction: Mechanism Insight and DFT Calculations

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Study of electronic, mechanical, thermodynamic, optical, and thermoelectric properties of CdLa₂X₄ (X = S, Se, Te) chalcogenides for solar cells and energy applications

Study of electronic, mechanical, thermodynamic, optical, and thermoelectric properties of CdLa₂X₄ (X = S, Se, Te) chalcogenides for solar cells and energy applications

Twin S-Scheme g-C₃N₄/CuFe₂O₄/ZnIn₂S₄ Heterojunction with a Self-Supporting Three-Phase System for Photocatalytic CO₂ Reduction: Mechanism Insight and DFT Calculations