Journal of Materials Chemistry C
·
2025
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IF 5.1
Xuekai Wang,Yongze Cao,Guangming Niu,Huanhuan Zhang,Xianglan Yan,Yichao Wang,Sai Xu,Baojiu Chen
Er3+/Yb3+/Sr2+-doped L-Ta2O5 upconversion phosphors were synthesized using the molten salt method with B2O3 as the solvent. High-resolution transmission electron microscopy (HRTEM) results showed that Er3+/Yb3+/Sr2+ underwent intercalated intergrowth in L-Ta2O5. This structure facilitates energy transfer from Yb3+ to Er3+, resulting in outstanding pure green upconversion luminescence (UCL) intensity. The green UCL integrated intensity of L-Ta2O5:Er3+/Yb3+/Sr2+ was 1.53 and 3.14 times greater than that of β-NaYF4:Er3+/Yb3+ and the optimal NaY(WO4)2:Er3+/Yb3+ samples, respectively. The absolute and relative temperature sensitivity reached 1.383% and 0.992% K−1, respectively. The shift rate of the peak centroids reached 0.273 nm GPa−1 under high pressure. With its excellent performance, L-Ta2O5:Er3+/Yb3+/Sr2+ can be used in the fields of UCL display, temperature and pressure sensing.
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高影响因子
MOLECULES
·
2025
·Vol. 30
·期 21
·4215
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IF 4.6
Yukun Tang,Pingping Yang,Jinpu Xie,Tengfei Duan,Zengmin Tang,Yao Liu,Rui Zhang,Haihu Tan,Jingjing Du,Lijian Xu
In recent years, cadmium sulfide (CdS) has been widely investigated due to its excellent photocatalytic performance. However, its practical application in pollutant treatment is limited by its narrow photoresponse range and susceptibility to photocorrosion. Herein, we design a unique four-layer core–shell structure NaYF 4 :Yb 3+ ,Er 3+ @NaYF 4 @CdS@Au (CSNPs@CdS@Au), with an inert NaYF 4 shell coating on NaYF 4 :Yb 3+ ,Er 3+ (CNPs) to form NaYF 4 :Yb 3+ ,Er 3+ @NaYF 4 (CSNPs) and CdS depositing on CSNPs (CSNPs@CdS); Au nanoparticles are loaded on CdS (CSNPs@CdS@Au). Compared with CdS (9.81%), CSNPs (5.0%), CSNPs/CdS (6.9%), and CSNPs@CdS (81.0%), CSNPs@CdS@Au degrades 97.7% Rhodamine B (RhB) within 15 min, exhibiting superior photocatalytic performance, attributable to two key factors: (1) the NaYF 4 inert shell encapsulation amplifies upconversion (UC) luminescence intensity by suppressing surface quenching; and (2) the electron transfer between Au nanoparticles and CdS effectively promotes spatial separation of photogenerated charge carriers and increases reactive active sites. Additionally, after five degradation cycles, CSNPs@CdS@Au still maintains a 93.25% degradation rate for RhB, confirming its excellent stability. This remarkable stability is attributed to the uniquely designed multilayer core–shell architecture, which significantly enhances structural integrity through physical isolation effects. This study establishes a material preparation strategy for efficient photocatalytic pollutant degradation.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Ning Li,Hong Shao,Haina Qi,Yuqi Sheng,Liu Yang,Yunrui Xie,Dan Li,Wensheng Yu,Qianli Ma,Xiangting Dong
A simple and universal technique of the combination of uniaxial electrospinning with subsequent peculiar dual-crucible fluorination technology is innovatively designed and used to construct metallic fluorides yolk-shell nanofibers (YSNFs) and yolk-shell nanobelts (YSNBs) directly for the first time. As a case study, Yb 3+ /Er 3+ co-doped alkaline earth metal fluoride (BaF 2 , SrF 2 and CaF 2 ) as core layer and SiO 2 as shell layer are applied to construct the yolk-shell one-dimensional nanostructures . Under the optimum calcination temperature (600 °C) and time (5 h), the obtained MF 2 :Yb 3+ , Er 3+ /SiO 2 (M=Ba, Sr, Ca) samples are of pure cubic phase, and display the yolk-shell nanofibers and yolk-shell nanobelts with good size uniformity and green up-converting fluorescence. By HF acid treatment of the samples, it is not only proved that the shell layer is SiO 2 , but also independent core-layer MF 2 :Yb 3+ , Er 3+ (M=Ba, Sr, Ca) nanofibers and nanobelts with good size uniformity and excellent up-conversion luminescence are obtained. Especially, only fluorination process among the halogenation can form such exceptive YSNFs and YSNBs one-dimensional nanostructures , and the formation mechanisms of YSNFs and YSNBs are proposed and verified, and further the novel technique is established. The new technique possesses the merits of simple device and easy operation, large output, well-defined morphology and high preparative success rate of yolk-shell nanofiber and yolk-shell nanobelt, universality to metallic fluorides. The design philosophy and the construction technique for the exceptional yolk-shell one-dimensional nanostructures afford a facile approach for the fabrication of other functional metal fluorides yolk-shell one-dimensional nanostructures.
研究领域:
材料科学
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纳米技术
·
光学
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高影响因子
Advanced Materials Interfaces
·
2026
·
IF 4.4
Jing Lyu,Sijie Su,Xin Wang,Enhai Song,Qinyuan Zhang
Er 3+ /Yb 3+ co-doped upconversion (UC) emission phosphors play crucial roles for advancing implantable temperature sensing technologies. However, the fabrication of high-performance optical fiber temperature sensor (OFTS) via these sensing materials remains a major challenge. Herein, we demonstrate a superior double-cladding OFTS by utilizing a bright and stable near-pure green UC phosphor NaLu(WO 4 ) 2 :Er 3+ /Yb 3+ as sensing material. Comprehensive investigations show that the near pure-green UC emission mechanism is mainly attributed to the isolated distributed characteristics of Er 3+ (Yb 3+ ) ions and the relatively long distance between them in this system. The OFTS exhibits a high temperature measurement accuracy of 0.155°C at 303 K, excellent measuring repeatability and chemical stability, along with strong resistance to various physical interferences (excitation power fluctuation, mechanical vibration, etc.). Through non-destructive implantation of the OFTS into a sodium-ion pouch-type battery, the battery's internal thermal states (temperature variation) during constant current (CC)/constant voltage charging discharging processes at different C-rates are captured in real time. Moreover, we also get the temperature variation and distribution in vertical direction in an oil-water system via mobile measurement of the OFTS. This study not only provides a high performance implantable OFTS but also shows new insights into the design of Er 3+ /Yb 3+ based sensing materials.
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高影响因子
MATERIALS RESEARCH BULLETIN
·
2019
·
IF 3.355
Yanqiu Zhang,Sai Xu,Xiangping Li,Jinsu Zhang,Jiashi Sun,Haiping Xia,Ruinian Hua,Baojiu Chen
Novel nanoplatform with excellent photothermal conversion and temperature feedback are preferable in clinical photothermal therapy (PTT). In this work, a hybrid of NaYF 4 :Er 3+ ,Yb 3+ @NaYF 4 upconversion nanoparticles (UCNPs) conjugated with gold nanorods (GNRs) was fabricated in order to achieve effective photothermal conversion and excellent temperature detection. In this nanoplatform, the GNRs as photo-activated nano-heaters could effectively convert the 808 nm photoenergy into heat, meanwhile UCNPs as 980 nm triggered temperature probe could read the temperature in an exact microdomain where the nanocomposite was located at. The effects of excitation source, GNRs concentration and power density on photothermal conversion were investigated. In addition, the difference between eigen temperature of nanoparticles and solution temperature, and the potential for temperature feedback were analyzed under double lasers excitation. Moreover, the photothermal conversion efficiency was experimentally confirmed from thermodynamic analysis. It was found that the nanocomposite can be an excellent nanoplatform for potential application in advanced PTT.
研究领域:
生物医学工程
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纳米医学
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肿瘤治疗
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光热疗法
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分子影像
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热疗监测
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转化医学
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高影响因子
JOURNAL OF LUMINESCENCE
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2022
·
IF 4.171
Boxu Xu,Chao Song,Jie Song,Rui Huang,Zhenxu Lin,Yi Zhang,Shaomin Lin,Jun Song
In this study, a series of well-crystallized Yb 3+ /Er 3+ /Tm 3+ -tridoped Y 2 O 3 –ZnO ceramic phosphors were prepared using sol–gel synthesis, and the phosphor structures were studied using X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis . The phosphors had excellent physical stability and porous structure. All phosphors generated blue, green, and red emission bands attributed to Tm: 1 G 4 → 3 H 6 , Er: 2 H 11/2 ( 4 S 3/2 )→ 4 I 15/2 , and Er: 4 F 9/2 → 4 I 15/2 radiative transitions , respectively. The emissions were intensified twice by tuning the Tm 3+ ratio in the host matrix Y 2 O 3 and ZnO parts. The color coordinates were adjusted by tuning both the Tm 3+ concentration and the excitation laser pump power to shift the color coordinates and only enhance the brightness, respectively. Meanwhile, heating phosphors can also linearly adjust the color coordinates of the luminescence. Therefore, it can also be used as a fluorescence thermometer in the field of temperature sensor . The study findings will broaden the phosphor practical application potential.
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高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2020
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IF 4.706
Hao Tang,Ying Xu,Xianhua Cheng
To investigate the optical properties of rare earth upconversion particle, the Cr 3+ and alkaline-earth ions (Mg 2+ or Ca 2+ ) co-doped β-NaYF 4 :Yb 3+ /Er 3+ upconversion microparticles (UCMPs) were synthesized via a facile hydrothermal method . The influences of co-doping ions and their concentrations on crystal structure, particle morphology and optical properties were thoroughly investigated by XRD , SEM , FT-IR spectra, UV–VIS-NIR absorption spectra and photoluminescence spectra. And the effects of the two kinds of impurity ions co-doping on the UC particle growth were studied. We found that luminescence quenching could be inhibited by using Cr 3+ and Mg 2+ co-doping due to the asymmetrical ion arrangement around activator. However, the Cr 3+ and Ca 2+ co-doping was found to quench the upconversion luminescence (UCL), and the possible mechanism was suggested. These discoveries lead to new insights into the quenching effect and new strategy to design UCMPs for better luminescence performance.
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高影响因子
OPTICAL MATERIALS
·
2019
·
IF 2.687
Huazhen Liao,Song Ye,Yanling Shi,Deping Wang
Small size optical-magnetic bifunctional upconversion nanoparticles (UCNPs) that can be effectively triggered by 808 nm exhibit distinct advantages of improved tissue penetrating depth, minimized overheating effect, possible for multimodal imaging and high clearance rate, which therefore are considered as desirable candidates for bioapplications. In this research, the 808 nm triggered sub-20 nm β-NaYF 4 :Yb 3+ /Er 3+ @NaGdF 4 :Yb 3+ /Nd 3+ @NaGdF 4 active-core@active-shell@inert-shell structured UCNPs with optical and magnetic bifunctional properties were developed by seed-mediated growth method with NaOA as sodium source instead of the generally used NaOH. Through optimizing Nd 3+ doping concentration and outermost NaGdF 4 inert-shell thickness, the optical-magnetic bifunctional core-shell-shell structured UCNPs exhibited strong UC emission intensity and improved magnetic property . Furthermore, the core-shell-shell NPs were validated to be no cytotoxicity by cell viability assessment. Therefore, this research may open a general avenue for the synthesis of small size multifunctional UCNPs for practical bioapplications without overheating.
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高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Lei Chen,Yanwen Jing,Zhimin Xu,Mengyao Shao,Shengyan Ge,Xingfu Zhou
The introduction of up-conversion materials converting near infrared light into useable visible light has been proven to be a promising strategy for improving the performance of perovskite solar cells . In this work, the up-conversion material of NaYF 4 :Yb 3+ , Er 3+ nanoparticles (NPs) were successfully prepared by one-step hydrothermal route and incorporated into Al 2 O 3 as the scaffold layer for the air-processed carbon-based mesoscopic perovskite solar cells (MPSCs). FESEM shows that the size of NaYF 4 :Yb 3+ , Er 3+ nanoparticles is about 100 nm and there is no obvious agglomeration. The UV–vis–NIR absorption spectrum of the mixed scaffold layer demonstrates a distinct infrared light response. The infrared photoelectric efficiency and EQE tests were used to verify that NaYF 4 :Yb 3+ , Er 3+ nanoparticles improved the photo response of the device in the infrared region, thereby improved the photoelectric performance of the MPSCs. An optimal efficiency of 13.04% was obtained by incorporating 25 wt% NaYF 4 :Yb 3+ , Er 3+ nanoparticles into the Al 2 O 3 scaffold layer, which shows a 20.6% increase in conversion efficiency when compared with the device without using the up-conversion material (10.81%). The optimized carbon-based MPSCs also show an infrared responded PCE value of 0.11% under infrared irradiation from 800 to 1100 nm. This paper shows that the up-conversion material expands the light response of solar cells to the infrared region and provides an effective method for the preparation of high-efficiency perovskite solar cells.
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高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Chunyang Kang,Xianwei Zuo,Lei Zhao,Cuiling Ren,Yan Wang,Yidan Liu,Xin He,Xin Li,Genliang Han
The red emission of upconversion nanoparticles (UCNPs) is located in an “optical window” range of the biological tissue, which has a promising prospect in biology application. In this work, novel red-emitting NaYF 4 :Yb 3+ /Er 3+ UCNPs with CH 3 COO − modifications were synthesized by single-mode focused microwave method. The morphology, structure, and luminescence properties of as-prepared UCNPs were characterized. The results showed that single-mode focused microwave method was an effective approach to prepare hydrophilic and strongly red emission UCNPs within a drastically reduced reaction time (only 10 min) compared to the traditional methods. Importantly, we also demonstrated that the CH 3 COO − modified NaYF 4 :Yb 3+ /Er 3+ UCNPs could be successfully applied for in vitro imaging of HeLa cells. This work not only provides a rapidly synthetic methodology for the preparation of red-emitting UCNPs but also offers an effective material for cancer cell imaging .
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高影响因子
LANGMUIR
·
2013
·
IF 4.187
Ziyong Cheng,Ruitao Chai,Pingan Ma,Yunlu Dai,Xiaojiao Kang,Hongzhou Lian,Zhiyao Hou,Chunxia Li,Jun Lin
Bilayer thermosensitive P(NIPAm-co-AAm) hydrogel discs were prepared by a facile UV light initiation process from N-isopropylacrylamide (NIPAm) and acrylamide (AAm) monomers’ cross-linking copolymerization. Poly(ethylene glycol) (PEG) as a pore-forming agent was added in order to form a porous structure and improve the water content in the hydrogel. Functional materials of NaYF4:Yb3+/Er3+ nanoparticles and multiwalled carbon nanotubes (MWCNTs) were incorporated into different layers of the P(NIPAm-co-AAm) hydrogel for the purpose of up-conversion luminescence labeling and the NIR light antenna effect, respectively. Significantly improved drug release from composite hydrogels was achieved in response to 980 nm NIR light irradiation by using lysozyme as a macromolecular drug. The multifunctional hydrogel reported here provides a platform for simultaneous NIR luminescence labeling and NIR-driven drug release.
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Haomiao Cao,Zhaoyi Yin,Xiaoyi Dong,Yongjin Li,Yong Yang,Jianbei Qiu,Zhengwen Yang,Zhiguo Song
Exploring strategies to improve the near-infrared response of photocatalysts is an urgent challenge that can be overcome by utilizing upconversion (UC) luminescence to enhance photocatalysis. This paper reports the fabrication of a ZnO/Bi 3 Ti 2 O 8 F:Yb 3+ , Er 3+ (ZnO/BTOFYE) Z-scheme heterojunction based on a Bi 3 Ti 2 O 8 F:Yb 3+ , Er 3+ (BTOFYE) UC photocatalyst via electrostatic self-assembly. Fermi energy difference at the interface of BTOFYE and ZnO generates a strong internal electric field (IEF) in the Z-scheme heterojunction, offering a novel charge transfer mode that promotes carrier transfer and separation while retaining the strong redox capability. These results are confirmed through in situ X-ray photoelectron spectroscopy, in situ Kelvin probe force microscopy, electron spin resonance, and density functional theory calculations. In addition, the effect of the IEF on the UC luminescence process of Er 3+ enhances the luminescence intensity, considerably improving the UC utilization efficiency. The optimal ZnO/BTOFYE degrades 64 % of ciprofloxacin in 120 min, which is 2.3 times more than that degraded by BTOFYE. Overall, the results of this study offer a reference for the rational development of high efficiency UC photocatalysts by generating IEF in Z-scheme heterojunctions.
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PubMed
高影响因子
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