A flexible copper sulfide composite membrane with tunable plasmonic resonance absorption for near-infrared light-driven seawater desalination

An, Lin; Wang, Chengbin; Feng, Qunfeng; Xu, Zhenmin; Tian, Qiwei; Chai, Wei; Yang, Shiping

doi:10.1039/d1va00043h

Cited by 3 publications

(4 citation statements)

References 42 publications

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“…Additionally, the concentration of PVP has been demonstrated to influence particle morphology and dimensions . However, the impact of different molecular weights of PVP on the synthesis of ultrasmall copper sulfide nanoparticles remains relatively underexplored. − Furthermore, the influence of varying molecular weights of PVP, acting as a capping agent, on the characteristic properties of particles concerning photoacoustic imaging and photothermal responses warrants further investigation.…”

Section: Introductionmentioning

confidence: 99%

Effect of PVP Molecular Weights on the Synthesis of Ultrasmall Cus Nanoflakes: Synthesis, Properties, and Potential Application for Phototheranostics

Tripathi,

Sharma,

Sinharay

et al. 2024

ACS Appl. Bio Mater.

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Copper sulfide nanoparticles (CuS) hold tremendous potential for applications in photothermal therapy (PTT) and photoacoustic imaging (PAI). However, the conventional chemical coprecipitation method often leads to particle agglomeration issues. To overcome this challenge, we utilized polyvinylpyrrolidone (PVP) as a stabilizing agent, resulting in the synthesis of small PVP-CuS nanoparticles named PC10, PCK30, and PC40. Our study aimed to investigate how different molecular weights of PVP influence the nanoparticles’ crystalline characteristics and essential properties, especially their photoacoustic and photothermal responses. While prior research on PVP-assisted CuS nanoparticles has been conducted, our study delves deeper into this area, providing insights into optical properties. Remarkably, all synthesized nanoparticles exhibited a crystalline structure, were smaller than 10 nm, and featured an absorbance peak at 1020 nm, indicating their robust photoacoustic and photothermal capabilities. Among these nanoparticles, PC10 emerged as the standout performer, displaying superior photoacoustic properties. Our photothermal experiments demonstrated significant temperature increases in all cases, with PC10 achieving an impressive efficiency of 51%. Moreover, cytotoxicity assays revealed the nanoparticles’ compatibility with cells, coupled with an enhanced incidence of apoptosis compared to necrosis. These findings underscore the promising potential of PVP-stabilized CuS nanoparticles for advanced cancer theranostics.

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Section: Introductionmentioning

confidence: 99%

Effect of PVP Molecular Weights on the Synthesis of Ultrasmall Cus Nanoflakes: Synthesis, Properties, and Potential Application for Phototheranostics

Tripathi,

Sharma,

Sinharay

et al. 2024

ACS Appl. Bio Mater.

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“…Optimal interfacial evaporators should maximize solar energy harvesting and its conversion to heat through nonradiative relaxation. Carbon materials such as graphite, , graphene, and CNTs, , alongside plasmonic nanoparticles, – semiconductor nanoparticles, – and conductive polymers , are frequently used as photothermal materials. However, they tend to have low photothermal conversion efficiency due to rapid charge carrier recombination.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photothermal Effect Assisted by Resonance Energy Transfer in Carbon/Covellite Core–Shell Nanoparticles toward a High-Performance Interfacial Water Evaporation Process

Chhetri,

Nguyen,

Song

et al. 2023

ACS Appl. Mater. Interfaces

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Carbon and semiconductor nanoparticles are promising photothermal materials for various solar-driven applications. Inevitable recombination of photoinduced charge carriers in a single constituent, however, hinders the realization of a greater photothermal effect. Core−shell heterostructures utilizing the donor−acceptor pair concept with high-quality interfaces can inhibit energy loss from the radiation relaxation of excited species, thereby enhancing the photothermal effect. Here, core−shell structures composed of a covellite (CuS) shell (acceptor) and spherical carbon nanoparticle (CP) core (donor) (abbreviated as CP/CuS) are proposed to augment the photothermal conversion efficiency via the Forster resonance energy transfer (FRET) mechanism. The close proximity and spectral overlap of the donor and acceptor trigger the FRET mechanism, where the electronic excitation relaxation energy of the CP reinforces the plasmonic resonance and near-infrared absorption in CuS, resulting in boosting the overall photothermal conversion efficiency. CP/CuS core−shell coated on polyurethane (PU) foam exhibits a total solar absorption of 97.1%, leading to an elevation in surface temperature of 61.6 °C in dry conditions under simulated solar illumination at a power density of 1 kW m −2 (i.e., 1 sun). Leveraging the enhanced photothermal conversion emanated from the energy transfer effect in the core−shell structure, CP/CuS-coated PU foam achieves an evaporation rate of 1.62 kg m −2 h −1 and an energy efficiency of 93.8%. Thus, amplifying photothermal energy generation in core−shell structures via resonance energy transfer can be promising in solar energy-driven applications and thus merits further exploration.

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“…[ 16–19 ] Indoor gas‐phase VOCs pollutants that originate from emissions by interior furnishings, occupants, and materials of construction, as well as outdoor air pollution have threatened human health seriously in recent years. [ 20–23 ]…”

Section: Introductionmentioning

confidence: 99%

“…[16][17][18][19] Indoor gas-phase VOCs pollutants that originate from emissions by interior furnishings, occupants, and materials of construction, as well as outdoor air pollution have threatened human health seriously in recent years. [20][21][22][23] Photocatalytic oxidation method has the advantage that the organic matter can be completely decomposed into inorganic species such as H 2 O, CO 2 , NO 3 À , halide ion, or other oxides. Accordingly, semiconductor photocatalysis has been widely studied for degrading VOCs with relative low concentration due to the inexpensive, nontoxic, and easy handling properties.…”

Section: Introductionmentioning

confidence: 99%

Recent Developments on Gas‐Phase Volatile Organic Compounds Abatement Based on Photocatalysis

Ren

Deng

et al. 2022

Adv Energy and Sustain Res

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The health and environmental problems caused by volatile organic compounds (VOCs) have attracted wide attention. Photocatalytic technology provides a green and sustainable way for VOCs removal. How to build a highly efficient and stable photocatalyst is of great significance to promote the practical application of photocatalysis technology. In this review, the literatures on photocatalytic oxidation in VOCs are surveyed and systematically categorized based on the types of photocatalytic materials. The methods of improving photocatalytic activity are studied, and the deactivation process of photocatalyst is discussed. Finally, the reaction mechanism is summarized according to the charge separation process and the classification of reactive oxygen species.

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A flexible copper sulfide composite membrane with tunable plasmonic resonance absorption for near-infrared light-driven seawater desalination

Abstract: Near-infrared light driven devices for water evaporation are strictly limited by their inflexibility, high cost, complicated fabrication processes, and low energy-conversion efficiency. Here, a flexible copper sulfide composite membrane with...

Cited by 3 publications

References 42 publications

Effect of PVP Molecular Weights on the Synthesis of Ultrasmall Cus Nanoflakes: Synthesis, Properties, and Potential Application for Phototheranostics

Effect of PVP Molecular Weights on the Synthesis of Ultrasmall Cus Nanoflakes: Synthesis, Properties, and Potential Application for Phototheranostics

Enhanced Photothermal Effect Assisted by Resonance Energy Transfer in Carbon/Covellite Core–Shell Nanoparticles toward a High-Performance Interfacial Water Evaporation Process

Recent Developments on Gas‐Phase Volatile Organic Compounds Abatement Based on Photocatalysis

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