Developing near-infrared responsive (NIR) photocatalysts is very important for the development of solar-driven photocatalytic systems. Metal sulfide semiconductors have been extensively used as visible-light responsive photocatalysts for photocatalytic applications owing to their high chemical variety, narrow bandgap and suitable redox potentials, particularly the benchmark ZnInS. However, their potential as NIR-responsive photocatalysts is yet to be reported. Herein, for the first time demonstrated that upconversion nanoparticles can be delicately coupled with hierarchical ZnInS nanorods (UCNPs/ZIS) to assemble a NIR-responsive composite photocatalyst, and as such composite is verified by ultraviolet-visible diffuse reflectance spectra and upconversion luminescence spectra. As a result, remarkable photocatalytic CO and CH production rates of 1500 and 220 nmol gh, respectively, were detected for the UCNPs/ZIS composite under NIR-light irradiation (λ ≥ 800 nm), which is rarely reported in the literature. The remarkable photocatalytic activity of the UCNPs/ZIS composite can be understood not only because the heterojunction between UCNPs and ZIS can promote the charge separation efficiency, but also the intimate interaction of UCNPs with hierarchical ZIS nanorods can enhance the energy transfer. This finding may open a new avenue to develop more NIR-responsive photocatalysts for various solar energy conversion applications.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jcis.2021.12.197 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Manipulating energy migration in nanoparticles toward tunable photochromic upconversion.
Nat Commun
December 2024
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, Guangdong Engineering Technology Research Center of Special Optical Fiber Materials and Devices, South China University of Technology, Guangzhou, China.
Smart control of energy interactions plays a key role in manipulating upconversion dynamics and tuning emission colors for lanthanide-doped materials. However, quantifying the energy flux in particular energy migration in the representative sensitizer-activator coupled upconversion system has remained a challenge. Here we report a conceptual model to examine the energy flux in a single nanoparticle by designing an interfacial energy transfer mediated nanostructure.
View Article and Find Full Text PDFGenerating Strong Circularly Polarized Luminescence from Self-assembled Films of Chiral Selenium Nanoparticles and Upconversion Nanoparticles.
Angew Chem Int Ed Engl
December 2024
Jiangnan University, International Joint Research Laboratory for Biointerface and Biodetection, lihu road 1800#, 214122, Wuxi, CHINA.
Circularly polarized luminescence (CPL) has garnered significant research attention. Achieving a high luminescence dissymmetry factor (glum) is a key challenge in this field. Herein, we reported, for the first time, the fabrication of a chiral assembled film consisting of chiral D-/L-Selenium nanoparticles (D-/L-Se NPs) and DSPE-PEG-NH2 modified upconversion nanoparticles (DPNUCNPs) with remarkable CPL properties that were generated by the interfacial self-assembly technique.
View Article and Find Full Text PDFImpact of surface chemistry of upconversion nanoparticles on time-dependent cytotoxicity in non-cancerous epithelial cells.
Sci Rep
December 2024
Institute for Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93053, Regensburg, Germany.
The application of upconversion nanoparticles (UCNPs) for cell and tissue analysis requires a comprehensive understanding of their interactions with biological entities to prevent toxicity or harmful effects. Whereas most studies focus on cancer cells, this work addresses non-cancerous cells with their regular in vitro physiology. Since it is generally accepted that surface chemistry largely determines biocompatibility in general and uptake of nanomaterials in particular, two bilayer surface coatings with different surface shielding properties have been studied: (i) a phospholipid bilayer membrane (PLM) and (ii) an amphiphilic polymer (AP).
View Article and Find Full Text PDFChiral Mesostructured Yb3+, Er3+ Codoped CeO2 with Upconverted Circularly Polarized Luminescence.
Chemistry
December 2024
Tongji University, School of Chemical Science and Engineering, 1239 Siping Road, Shanghai, CHINA.
Upconverted circularly polarized luminescence (UC-CPL) active organic and organic-inorganic composite materials have garnered increasing attention due to their vast potential applications in areas such as 3D displays, encryptions, spintronics and optoelectronic devices. However, effective methods for fabricating chiral inorganic materials exhibiting UC-CPL remain a challenge. Herein, we propose an approach for the synthesis of UC-CPL active chiral mesostructured CeO2 powders (CMCs) via a hydrothermal growth method, using L/D-aspartic acid as symmetry-breaking and structure-directing agents.
View Article and Find Full Text PDFLRET-Based Simultaneous Detection of Dual miRNAs via Multitrap Optical Tweezers Assisted Suspension Array Tagged by Two Different Luminescent Quenchable UCNPs Combining CRISPR/Cas12a Amplification.
Anal Chem
December 2024
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China.
Nowadays, optical tweezers play a vital role not only in optical manipulation but also in bioassay. As principal optical trapping objects, microbeads can combine optical tweezers with suspension array technology, with amply focused laser beams and adequately concentrated tags contributing to highly sensitive detection. In view of the inefficiency of conventional single-trap optical tweezers, multitrap systems are developed.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!