SusMat
·
2023
·Vol. 3
·期 4
·510-521
·
IF 28.4
Xiao Chen,Jianhang Xu,Yang Li,Yan Gao,Ge Wang
In response to global energy scarcity, frontiers in multifunctional composite phase change materials (PCMs) with photo-/electro-/magnetothermal triggers show great potential in multiple energy utilization. However, most available composite PCM candidates are inadequate for multiple energy storage applications simultaneously. Herein, a green synthetic route is proposed to develop bimetallic zeolitic imidazolate framework (ZIF)-derived 1D–2D bridged array carbon-based composite PCMs for simultaneous photo-/electro-/magnetothermal energy storage applications. As graphitization-induced catalyst, Co nanoparticles greatly boost the formation of ZIF-derived 1D–2D bridged array carbon framework with high graphitization and low interface electrical/thermal resistance. Benefiting from the broadband intense photon capture, fast photon/electron/phonon transport, and surface plasma resonance effect of Co nanoparticles, the resulting composite PCMs integrate advanced photo-, electro-, and magnetothermal storage functions. Furthermore, composite PCMs also exhibit long-lasting shape stability, structural stability, thermal storage stability, and photo-/electro-/magnetothermal storage stability after undergoing multiple heating–cooling cycles. This study is promising to accelerate the major breakthroughs of advanced multifunctional carbon-based composite PCMs toward multiple energy utilization.
研究领域:
材料科学
·
能源技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Bo Liu,You Li,Sai Xu,Jianglong Chang,Yuefeng Gao,Hongquan Yu,Yichao Wang,Baojiu Chen
Lead-free double perovskite (DP) materials have garnered growing interest because of their outstanding optoelectronic attributes. Nevertheless, realizing efficient, multimodal photoluminescence (PL) with adjustable emission spectra within single-host DP materials still poses a formidable hurdle. Herein, Er-based lead-free DPs (Cs2NaErCl6) were developed, which achieves downshift (DS) emissions from visible to near-infrared (NIR) and multicolor upconversion (UC) emissions, resulting from the abundant energy levels of Er3+ ions. Alloying with Yb3+ introduces new Yb3+-Er3+ cross-relaxation (CR) pathways, leading to a 308.5-fold increase in DS red emission and achieving a maximum color purity of 98.63%. Additionally, Yb3+ alloying enhances UC luminescence by 10.8-fold due to its strong absorption cross section around 980 nm. The colors of the UC emission can be adjusted by altering the doping concentration of Yb3+ and laser power density. Spectral analysis and theoretical calculations reveal the high compatibility of Yb3+ ions with Cs2NaErCl6, and the critical role of CR and energy-transfer processes in achieving efficient, tunable, and multimodal PL. Furthermore, the developed DP materials have been utilized in anticounterfeiting, information encoding, and narrow-band NIR photodetectors, expanding the versatile uses of rare-earth (RE)-based DP materials in the optoelectronics field.
研究领域:
材料科学
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光学
·
光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Physical Chemistry C
·
2025
·
IF 3.2
Zehui Chen,Mengyan Cao,Zhihui Rao,Xiao Gong
Lanthanide ion-doped metal halides are a promising class of fluorescent materials. In this paper, we investigated the optical properties and photophysical mechanism of Er3+, Yb3+-doped Cs2NaScCl6 phosphor. It was demonstrated that in both up-conversion (UC) and down-shifting emission modes, the increase of Yb3+ concentration resulted in enhancement of the 4F9/2 → 4I15/2 emission of Er3+ in Cs2NaScCl6. In particular, UC emission gradually shifts from green to yellow with the enhancement of the excitation power density observed in Yb3+-rich systems. The complex cross-relaxation behavior between Yb3+ and Er3+ results in these phenomena. New paradigms are provided for the development of multimodal and dynamic fluorescent anticounterfeiting materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2020
·
IF 2.779
Zhi-yong Yu,Shu-wang Duo
Fluorescent carbon dots (CDs) are promising zero-dimensional carbon nanomaterials with semiconductor-like properties, which have attracted tremendous attention owing to their fascinating features such as excellent optical performance, chemical inertness, and low toxicology. In this investigation, Mg-doped CDs (Mg-CDs) with up- and down-conversion fluorescence (FL) were prepared within 2 min through a one-pot, facile and ultrafast microwave method. The obtained Mg-CDs showed excitation-independent blue emission and were potentially applied for the detection of hematin based on the strong inner filter effect (IFE). The FL intensity ratio ( I 0 / I ) of the synthesized Mg-CDs were proportional to the concentration of hematin in the range of 0.1–75 μM with the limit of detection of 25 nM for Mg-CDs-0.1 and 0.01–25 μM with the limit of detection of 1 nM for Mg-CDs-0.5. Overall, this selective and sensitive assay using Mg-CDs obtained through the current microwave method was believed to demonstrate significant application prospects in complex matrices owing to its simplicity and specificity for hematin.
研究领域:
材料科学
·
分析化学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Songbin Liu,Long Yan,Qiqing Li,Jinshu Huang,Lili Tao,Bo Zhou
Lithium-sublattice nanoparticles have recently shown to be a promising nano-sized host candidate for photon upconversion of lanthanides. However, it remains a challenge for the controllable synthesis of high-quality lithium-sublattice core-shell nanostructures due to its tetragonal crystal structure in contrast to the commonly investigated hexagonal (or cubic) sodium-sublattice counterparts. Herein, we present a novel synthetic strategy of using the pre-synthesized optically-active (sensitive or emissive) seeds to guide the epitaxial growth of LiGdF 4 -based core-shell nanostructures. By further constructing the Gd 3+ -mediated interfacial energy transfer in such nanoparticles , both upconverting and down-shifting emissions from a set of lanthanide ions including Eu 3+ , Tb 3+ , Dy 3+ , Sm 3+ and Nd 3+ were realized. Such core-shell nanoparticles also show good spectral Stark-splitting feature owing to their lower local structural symmetry compared to other nano-sized hosts. Moreover, the tri-channel emission from a single nanoparticle was achieved by integrating upconverting and down-shifting emissions under the dual wavelength excitations (980/254 nm), exhibiting a great promise in the multiple anti-counterfeiting identification. These results open a door to the research on new kinds of efficient luminescent nanomaterials, and further help the design of multi-functional nanostructures towards emerging cutting-edge applications.
研究领域:
材料科学
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光学
·
纳米技术
✓ 已验证
DOI
高影响因子
ENERGY CONVERSION AND MANAGEMENT
·
2019
·
IF 7.181
Wentao Wang,Malik Muhammad Umair,Jinjing Qiu,Xiaoqiao Fan,Zhihua Cui,Yuyuan Yao,Bingtao Tang
The objective of this study is to develop a novel phase change nanocomposite for efficient electromagnetic and solar energy conversion and storage. The multifunctional nanocomposites are formulated by using PEG/SiO 2 as form-stable phase change material and well-dispersed Fe 3 O 4 -functionalised graphene nanosheets (Fe 3 O 4 -GNS) as energy converter. The magnetothermal effect of Fe 3 O 4 nanoparticles and light harvesting properties of graphene in Fe 3 O 4 -GNS, enabled the efficient magnetic- or light-to-heat conversions under an alternating magnetic field or solar illumination. The heat generated during the energy conversion process is stored in the form-stable phase change material due to the melting phase transition of PEG. Moreover, the phase change material nanocomposites exhibit high energy storage capacity (exceeding up to 100 J/g), excellent thermal stability and reversibility. This novel energy conversion and storage system will provide new insights into the field of energy management for electromagnetic or solar driven devices.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2019
·
IF 7.467
Qiyao Guo,Jihuai Wu,Yuqian Yang,Xuping Liu,Jinbiao Jia,Jia Dong,Zhang Lan,Jianming Lin,Miaoliang Huang,Yuelin Wei,Yunfang Huang
The introduction of upconversion materials as spectral converter into photovoltaic devices to harvest and convert near infrared photons to visible photons that can thus be absorbed by perovskite layer is a promising strategy for enhancing the performance of perovskite solar cells . Hence, β-NaYF 4 :Yb 3+ /Er 3+ /Sc 3+ @NaYF 4 rare-earth doped upconversion nanoparticles with core-shell structure are synthesized. The doped rare-earth ions Yb 3+ and Er 3+ convert near infrared light to red and green light, and the Sc 3+ ions enhance the upconversion luminescence efficiency, which broaden the absorption range of solar irradiation and generate extra photocurrent in the solar cells. The surface defects of β-NaYF 4 :Yb 3+ /Er 3+ /Sc 3+ is passivated by the even NaYF 4 shell, which results in the obvious enhancement in upconversion emission intensity. Consequently, the perovskite solar cell based on the rare-earth doped upconversion nanoparticle mesoporous layer achieves a high power conversion efficiency of 20.19%, while the device based on TiO 2 mesoporous layer gets an efficiency of 17.44%.
研究领域:
材料科学
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能源科学
·
光学工程
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Hao Ren,Shoujun Ding,Yuhang Zheng,Chuancheng Zhang,Miaomiao Wang,Yong Zou,Wenpeng Liu,Lu Cheng
Fluorescence intensity ratio thermometry represents a novel non-contact approach for rapid and precise temperature measurements. In this study, a Yb,Er co-doped Gd 3 Sc 2 Al 3 O 12 single crystal (Yb,Er:GSAG) was investigated, exploiting the dual-mode luminescence of upconversion and downconversion for optical temperature sensing applications. The crystal exhibited distinct luminescence behaviors when subjected to 266 nm, 355 nm, and 980 nm laser excitations , manifesting a dark blue appearance under 266 nm ultraviolet (UV) excitation and a green hue under 355 nm and 980 nm excitations. Specifically, under 355 nm excitation, the crystal demonstrated a predominantly pure green upconversion, with a green-to-red ratio of 38. For the first time, we propose an investigation into the temperature sensing behavior under dual-mode luminescence in the same crystal, utilizing the fluorescence intensity ratio of the 2 H 11/2 and 4 S 3/2 thermally coupled energy levels of Er 3+ . The obtained maximum relative sensitivities ( S R ) for the two fitted luminescence modes were found to be 101.80×10 −4 K −1 at 300 K (980 nm excitation) and 126.39×10 −4 K −1 at 300 K (355 nm excitation), respectively. The impressive S R values substantiate Yb,Er:GSAG crystal as highly promising candidates for optical temperature sensing applications.
研究领域:
光学材料
·
物理化学
·
温度测量技术
✓ 已验证
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 4
·e6359
·
IF 3.1
Jinghan Zhang,Weijia Zhang,Changhua Li,Bihe Yuan
The frequent occurrences of offshore oil spills have led to severe environmental contamination and ecological threats. However, traditional recovery methods pose issues such as high-energy consumption, low absorption efficiency and secondary pollution. This work prepared a hydrophobic aerogel (P-GO@CNTs-9/ATP/SA) using sodium alginate, attapulgite and graphene oxide surface-modified carbon nanotubes with superior solar/Joule heating ability. The water contact angle of this aerogel is approximately 147.5°. Moreover, this aerogel demonstrates stable and efficient photothermal conversion properties, reaching a surface temperature of 82.3 °C under one solar illumination (1 kW/m 2 ). Furthermore, when applying a voltage of 10 V, the surface temperature of the P-GO@CNTs-9/ATP/SA aerogel reaches 170.4 °C, assisting photothermal conversion to enhance the fluidity of viscous oil, thereby conserving energy. Finally, we present a continuous absorption device utilizing P-GO@CNTs-9/ATP/SA as the primary component, enabling automatic switching between photothermal and electrothermal modes for the comprehensive and continuous treatment of oil spills. Due to the unique design, environmental friendliness and ideal absorption capacity, this approach offers a novel choice for recovery of oil spills, which is expected to further promote principles of sustainable development.
研究领域:
环境科学
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材料科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2025
·
IF 9.8
Xingying Zhang,Yangyang Xu,Kongjie Gu,Shenjie Han,Junjie Cen,Youming Yu,Junfeng Hou
Recently, wood-based phase change materials have broad research prospects in energy management materials, but their complex preparation process, low thermal conversion efficiency, and poor heat storage capacity still limit their application. This study successfully prepared magnetic wood-based phase change materials (MWPCM) composed of delignified wood (DW), magnetic ferrosoferric oxide (Fe 3 O 4 ) nanoparticles, and polyethylene glycol (PEG) through a two-step method. The incorporation of PEG significantly improved the thermal energy storage capabilities while mitigating the heat loss during the conversion process of the MWPCM. Consequently, the MWPCM could maintain about 90 °C after being exposed to sunlight for 10 min at a light intensity of 1 sun, and it could sustain a stable temperature of about 50 °C for approximately 500 s following the shutoff of the xenon lamp, indicating remarkable thermal storage efficiency. Moreover, the MWPCM demonstrated rapid heating capabilities when subjected to alternating magnetic fields. Additionally, the MWPCM maintained stability even at temperatures below 220 °C, exhibiting superior thermal stability. The MWPCM demonstrated outstanding magnetic properties, photothermal conversion, and magnetothermal conversion performance, rendering it an invaluable type of inductive heating and thermal energy storage material with substantial practical applications.
研究领域:
材料科学
·
能源工程
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Bingxin Yuan,Meiting Li,Chi Zhang
The RE 3+ doped YbNbO 4 and Yb 3 NbO 7 nanophosphors (RE=Ho, Er and Tm) were synthesized via a calcination-assisted hydrothermal procedure. YbNbO 4 intensified almost the whole up-conversion (UC)/down-conversion (DC) emissions of RE 3+ by ∼2 times when compared with Yb 3 NbO 7 components, indicating that a lower symmetry environment in the former case is more favorable for photoluminescence. UC luminescence in each case was dominated by a green band at ∼539 nm for Ho 3+ and a NIR band at ∼803 nm for Tm 3+ , while doping YbNbO 4 and Yb 3 NbO 7 with Er 3+ separately yielded the slightly stronger green 556 nm and red 658 nm emissions. The UC/DC luminescence mechanisms were elaborated via Yb 3+ → RE 3+ forward/backward energy transfer and cross relaxation.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Mingjie Wang,Yi Liu,Gui Yang,Tiantian Xiang,Youxin Ji,Fengmei Su,Chuntai Liu
In order to maintain the human body temperature within a comfortable range in harsh environments, flexible and wearable thermal management fabrics that can combine energy storage and multi-modal heat recharging ability are urgently needed. Here, a strategy of coaxial electrospinning and spray coating was proposed to prepare the MXene-coated core-sheath phase change fibers to satisfy the above requirement. The hierarchical structure endows the composite film with phase change energy storage and photo/electro-thermal multi-modal heat charging performance. Specifically, the encapsulated paraffin wax (PW) in flexible polyurethane (PU) fibers has a high enthalpy value of 91.7 J/g, meanwhile, the flexible film exhibits excellent photo-thermal performance conversion capability (up to 40 °C under the irradiation intensity of 30 mW/cm 2 ) and electro-thermal conversion capability (up to 40 °C at the voltage of 1.5 V) at extremely low MXene loading (0.23 mg cm −2 ), which endows the MXene/PU@PW (MPP) ability of “heat recharging” by low light power density or low voltage. The multifunctional fabrics with phase change function and multi-modal heat recharging capacity exhibit great potential application in the design of wearable personal thermal management.
研究领域:
材料科学
·
纺织工程
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）