Cation Exchange Reaction-Mediated Photothermal and Polarity-Switchable Photoelectrochemical Dual-Readout Biosensor

Analytical Chemistry, Год журнала: 2023, Номер 95(44), С. 16335 - 16342

Опубликована: Окт. 25, 2023

Cation exchange (CE) is a burgeoning method for controlled crystal synthesis; however, its applications in bioanalysis are still their infancy. Herein, we explored the transformation of ZnIn2S4 properties after CE reaction with Cu2+ ions; furthermore, discrepancy was employed to design dual-readout detection system photothermal and polarity-switchable photoelectrochemical (PEC) immunoassays realize reliable carcinoembryonic antigen (CEA). In presence CEA, CuO nanoparticles (CuO NPs) as dual-signal response probes would bond microplates be acidolyzed by HCl release Cu2+, which could replace Zn2+ In3+ via reaction. After completed, photocurrent switch from weak anodic cathode one using 635 nm laser signal amplifier, while enhanced 808 illumination. On basis PEC strategy, CEA accurately detected 0.1 50 ng mL-1 limit (LOD) 48 pg (S/N = 3). Moreover, assay possesses linear range 0.5 100 LOD 0.21 mL-1. addition, designed sensing platform only relies on devices portability that permitted point-of-care detection.

Язык: Английский

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

ACS Catalysis, Год журнала: 2024, Номер 14(7), С. 5326 - 5343

Опубликована: Март 26, 2024

The use of photocatalytic solar energy to drive CO2 reduction is beneficial for addressing fossil fuel shortages and environmental pollution issues. We synthesized a twin S-scheme g-C3N4/CuFe2O4/ZnIn2S4 heterojunction, which was used construct self-supporting three-phase system reduction. Two built-in electric fields in this heterojunction induced effective migration photogenerated carriers, resulting wide light response range strong oxidation ability. This without sacrificial agent had high CH4 selectivity (96.8%) surprise production rate (267.4 μmol g–1 h–1), still maintained an excellent cycle (249–267.4 h–1) during five cycles. In addition, possessed both hydrophilicity hydrophobicity, achieved efficient transformation into by controlling interface wettability. g-C3N4 as hydrophobic layer promoted mass transfer achieve the enrichment on surface; ZnIn2S4 hydrophilic could well adsorb H2O, further oxidized holes many protons (H+). Finally, DFT calculations found that Fe–N bonds located between CuFe2O4 played crucial role They served bridge electron induce bending adsorption CO2, enhanced *CO stabilization *H.

Язык: Английский

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Artificial Photosynthetic System with Spatial Dual Reduction Site Enabling Enhanced Solar Hydrogen Production

Advanced Materials, Год журнала: 2023, Номер 36(9)

Опубликована: Ноя. 28, 2023

Abstract Although S‐scheme artificial photosynthesis shows promise for photocatalytic hydrogen production, traditional methods often overly concentrate on a single reduction site. This limitation results in inadequate redox capability and inefficient charge separation, which hampers the efficiency of evolution reaction. To overcome this limitation, double system is proposed that leverages dual sites, thereby preserving energetic photo‐electrons holes to enhance apparent quantum efficiency. The design features junction consisting CdS nanospheres decorated with anatase TiO 2 nanoparticles coupled graphitic C 3 N 4 . as‐prepared catalyst exhibits rate 26.84 mmol g −1 h an 40.2% at 365 nm. enhanced ascribed efficient separation transport induced by S‐scheme. Both theoretical calculations comprehensive spectroscopy tests (both situ ex situ) affirm across interface. Moreover, substituting reduction‐type other similar sulfides like ZnIn S , ZnS, MoS In further confirms feasibility configuration. findings provide pathway designing more effective photosynthetic systems, opening up fresh perspectives enhancing performance.

Язык: Английский

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Rationally designed dual cocatalysts on ZnIn₂S₄ nanoflowers for photoredox coupling of benzyl alcohol oxidation with H₂ evolution

Journal of Materials Chemistry A, Год журнала: 2024, Номер 12(30), С. 18986 - 18992

Опубликована: Янв. 1, 2024

GR and Ni 2 P dual cocatalysts modified ZnIn S 4 nanoflower has been prepared they can simultaneously utilize photogenerated electrons holes to actuate the oxidation of benzyl alcohol (BA) benzaldehyde (BAD) integrated with H evolution.

Язык: Английский

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Amide‐Engineered Metal–Organic Porous Liquids Toward Enhanced CO₂ Photoreduction Performance

Advanced Functional Materials, Год журнала: 2024, Номер 34(19)

Опубликована: Янв. 17, 2024

Abstract The development of alternative catalytic systems toward high‐performance CO 2 photoreduction is considered to be a promising approach address the future energy demand and reduce emissions. However, molecules are thermodynamically stable in nature, thus adsorption activation on surface catalysts key factors determine conversion efficiency. Herein, porous liquid (NH ‐UIO‐66 PL) demonstrated for efficiently facilitating by modification metal–organic framework ‐UIO‐66) with ionic via amide bonds. CdS/NH PL exhibits ‐to‐CO yield 71.37 µmol g −1 h selectivity 100%. Experiments theoretical calculations show that introduced moieties not only enriched electron density at Zr 4+ active sites but also stabilize * COOH intermediate. achievements provide an effective strategy frameworks catalysis.

Язык: Английский

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In situ Mo-doped ZnIn2S4/Ni–Ni Hofmann-type coordination polymer composites for photocatalytic hydrogen evolution reaction

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 661, С. 207 - 218

Опубликована: Янв. 27, 2024

Язык: Английский

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Bi3.64Mo0.36O6.55/Bi4O5I2 S-scheme heterojunction boosting antibiotic photodegradation: Insights from interface to performance

Chemical Engineering Journal, Год журнала: 2024, Номер 483, С. 149156 - 149156

Опубликована: Янв. 28, 2024

Язык: Английский

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Tailoring the catalytic sites by regulating photogenerated electron/hole pairs separation spatially for simultaneous selective oxidation of benzyl alcohol and hydrogen evolution

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 659, С. 776 - 787

Опубликована: Янв. 9, 2024

Язык: Английский

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Kinetically and Thermodynamically Favorable Ni–Al Layered Double Hydroxide/Ni-Doped Zn_0.5Cd_0.5S S-Scheme Heterojunction Triggering Photocatalytic H₂ Evolution

Inorganic Chemistry, Год журнала: 2023, Номер 62(17), С. 6843 - 6850

Опубликована: Апрель 20, 2023

Layered double hydroxide (LDH)-based photocatalysts have attracted more attention in photocatalysis due to their low cost, wide band gaps, and adjustable photocatalytic active sites; however, photogenerated carrier separation efficiency limits efficiency. Herein, a NiAl-LDH/Ni-doped Zn0.5Cd0.5S (LDH/Ni-ZCS) S-scheme heterojunction is rationally designed constructed from kinetically thermodynamically favorable angles. The 15% LDH/1% Ni-ZCS displays comparable hydrogen evolution (PHE) activity with rate of 6584.0 μmol g-1 h-1, which exceeds by ∼6.14- ∼1.73-fold those ZCS 1% Ni-ZCS, respectively, outperforms most the previously reported LDH-based metal sulfide-based photocatalysts. In addition, apparent quantum yield reaches 12.1% at 420 nm. situ X-ray photoelectron spectroscopy, photodeposition, theoretical calculation reveal specific transfer path carriers. On this basis, we propose possible mechanism. fabrication not only accelerates carriers but also decreases activation energy H2 improves redox capacity. Moreover, there are huge amounts hydroxyl groups distributed on surface photocatalysts, highly polar easy combine H2O large dielectric constant form bond, can further accelerate PHE.

Язык: Английский

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A general strategy for the enhanced H2 production performance of CdS/noble metal sulfide nanorods photocatalysts by cation exchange

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 664, С. 848 - 856

Опубликована: Март 12, 2024

Язык: Английский

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