ACS Sustainable Chemistry & Engineering
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2022
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IF 9.224
Meiqi Zhang,Luo Feng,Zhiyuan Zeng,Yijie Yang,Xiaoqi Sun
In this work, the Li/Zn-doped near-infrared reflective inorganic blue pigment YIn0.9–xMn0.1MxO3−δ (M = Li/Zn, x = 0–0.4) was synthesized by the high-temperature solid-state reaction method. The phase structures, morphologies, color properties and optical properties of synthetic pigments were characterized by X-ray diffractometer (XRD), scanning electron microscope (SEM), CIE1976 color space system, UV–vis-NIR spectrophotometer, and other instruments. All the doped samples have a hexagonal structure with space group P63cm (185). Compared with YIn0.9Mn0.1O3 (b* = −45.91), Li/Zn doped pigments have richer blue hues (b* is ranged from −29.59 to −55.14), which can meet the needs of public’s demands for blue hues. The NIR solar reflectance (R*) of all the samples are above 70%, and the highest R* with different doping concentrations can reach 86% (M = Li, x = 0.2), which is about 16% higher than YIn0.9Mn0.1O3. YIn0.9–xMn0.1MxO3−δ (M = Zn/Li, x = 0–0.4) are indicated to possess higher near-infrared solar reflectivity than other blue compounds, including commercial products. The surface temperature difference between the Li-doped (x = 0.2)/Zn-doped (x = 0.1) paints and commercial ultramarine paint can reach about 20 and 10 °C, respectively. The above properties ensure the potential applications of environmentally friendly YIn0.9–xMn0.1MxO3−δ pigments with a rich blue-hue in the field of energy-saving materials.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 12
·8549-8558
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IF 9.5
Qinglong Hu,Ruiming Tan,Pengjie Zhong,Keyu Han,Yinyan Li,Peng Xue,Gongxun Bai
Passive daytime radiative cooling (PDRC) presents an effective strategy for mitigating the global greenhouse effect. However, some existing PDRC systems necessitate complex designs and are limited to selectively radiate heat into outer space. To improve the performance of PDRC systems, we have developed a multifunctional rare earth phosphor film that integrates particle scattering, fluorescence emission and broadband radiation capabilities. Outdoor tests conducted under an average solar radiation of 644 W m−2 indicated that the film achieved a sub-ambient cooling temperature of 8.26 °C with a net cooling power reaching up to 101 W m−2. During night tests, the SM film's average cooling was only 0.29 °C, which is promising for real-life nighttime comfort and building service life. Given its superior performance and multifunctionality, the composite film demonstrates significant potential for application in contemporary green development initiatives.
研究领域:
材料科学
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光学工程
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能源材料
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环境科学
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热管理
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绿色建筑技术
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2025
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IF 17.1
Yiqi He,Zhi Liu,Xiaohang Luo,Rongye Zhu,Weiwei Guo,Dechen Zhang,Yingchun Niu,Shaochun Tang,Quan Xu,Yang Zhou
Conventional building windows suffer from numerous limitations in light modulation, thermal insulation, and energy utilization, struggling to meet the dual demands of modern buildings for high energy efficiency and consistent thermal comfort. In response to the various stages of energy loss through windows, a design concept for a hydrogel-based smart material that dually regulates solar transmittance and infrared emissivity has been proposed. Stimulated by temperature or humidity, this hydrogel can achieve significant changes in visible light transmittance (86.8 %) and infrared emissivity (50.1 %) autonomously and independently, exhibiting excellent solar modulation capability (78.7 %) and controllable radiative cooling performance (switching between a heat dissipation layer and an insulation layer). The hydrogel exhibits passive response to dual stimuli either independently or synergistically, with the capability to restore its initial properties through active interventions such as water mist spraying. In various application conditions, indoor temperatures and window surface temperatures can be reduced by up to 23.1°C and 13.2°C, respectively. Moreover, simulation results indicate that this design can be applied across various climatic zones globally (achieving annual energy savings of 2.6 % - 55.9 %), providing new design ideas and technical directions for building energy saving.
研究领域:
材料科学
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建筑节能
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功能高分子材料
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热力学
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环境响应材料
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光学工程
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能源材料
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 31
·15064-15070
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IF 3.925
Zhendong Yan,Yang Wang,Ting Li,Pengwu Xu,Jing Huang,Jie Jiang,Xuhui Zhang,Bihua Xia,Shibo Wang,Weifu Dong
Nanoparticles with ultraviolet/near-infrared (UV/NIR) shielding ability have great potential in the application research of energy-saving materials. In this study, we prepared dual-functional UV/NIR-shielding poly(lactic acid) (PLA) composite films. Firstly, CsxWO3@polydopamine (CWO@PDA) nanoparticles with core–shell structures were formed by dopamine self-polymerization on the surface of CWO, and then CWO@PDA-g-PLLA nanoparticles were successfully prepared by ring-opening polymerization with L-lactide as a raw material. Finally, PDLA/CWO@PDA-g-PLLA composite films containing different proportions of CWO@PDA-g-PLLA nanoparticles were fabricated via a solvent casting method. The results showed that these films have an excellent UV shielding performance and strong absorption in the NIR region (800–2500 nm). When 1.5 wt% of CWO@PDA-g-PLLA nanoparticles was added, the near-infrared transmittance of the composite films decreases significantly from 79.7% to 29.8%. More importantly, the nanoparticles can be used as a heterogenous nucleator to enhance the HC crystallization of PDLA and form stereocomplex crystallites between PDLA and CWO@PDA-g-PLLA nanoparticles which improved the mechanical properties. This study provided a new method for the preparation of PLA nanocomposites with excellent UV/NIR shielding function. These nanocomposites are promising for practical application on energy-saving windows.
研究领域:
材料科学
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纳米技术
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高分子科学
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能源材料
✓ 已验证
产品关联
DOI
高影响因子
Journal of Building Engineering
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2025
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IF 7.4
Miao Liu,Gaoxiang Long,Zhi Li,Weiwang Chen,Chang Xu,Yumin Duan,Yunli Huang,Xiaoxu Wu,Natalia Menshutina
Hydrophobic silica aerogel (HSA) is widely recognized for its ultralow thermal conductivity and high porosity, making it an ideal candidate for building thermal insulation and aerospace applications. However, its intrinsic flammability severely limits broader usage. In this work, a multifunctional flame-retardant HSA composite was successfully developed by employing DOPO as a phosphorus-based catalyst and incorporating hollow silica microspheres (HSM). The resulting DSA/HSM composite exhibited significantly enhanced thermal stability and flame retardancy. Specifically, the composite with 0.1 g HSM showed a 19.2 % reduction in peak of heat release rate and a 61.6 % decrease in total heat release compared to pristine HSA. Moreover, the DSA/HSM composites maintained excellent hydrophobicity and thermal insulation, with a water contact angle of 143.2° and a thermal conductivity of 24.3 mW m −1 K −1 . This study presents a facile and feasible strategy for fabricating advanced HSA composites with combined thermal insulation and flame retardancy, offering promising potential for application in energy-efficient and fire-safe building materials.
研究领域:
材料科学
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高分子化学
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建筑材料
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防火工程
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能源效率
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2013
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IF 5.008
Yamei Li,Shidong Ji,Yanfeng Gao,Hongjie Luo,Ping Jin
Vanadium dioxide (VO2) is a key material for thermochromic smart windows that can respond to environmental temperature and modulate near-infrared irradiation by changing from a transparent state at low temperature to a more reflective state at high temperature, while maintaining visible transmittance. Here, we demonstrate for the first time that the Mott phase transition characteristics in VO2 nanoparticles can be remarkably modified by misfit strains occurring at the epitaxial interface between VO2 and the anatase TiO2 of VO2/TiO2 core–shell particles. The heteroepitaxial growth of the as-synthesized particles followed an unprecedented orientation relationship, and an epitaxial growth mechanism is proposed to explain this behavior. A relatively small theoretical coherent misfit (3–11%) and a moderate heating rate (20 °C·min–1) in the preparation of the core–shell structure were critically important from the thermodynamic and kinetic perspectives, respectively. The misfit-induced interfacial strain along the uniaxial cR axis increased the transition temperatures, especially on the cooling portion of the heating–cooling cycle, leading to a notably reduced transition hysteresis loop width (from 23.5 to 12.0 °C). Moreover, the optical band gap was also engineered by the interfacial effect. Such a reduced hysteresis showed a benefit for enhancing a rapid response for energy saving thermochromic smart windows.
研究领域:
材料科学
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纳米技术
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凝聚态物理
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智能涂层
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节能材料
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Yunjie Ju,Wu Wei,Ying Wang,Zefang Xiao,Yonggui Wang,Kai Zhang,Yanjun Xie
The growing demand for green, low-carbon, and sustainable development has driven the advancement of window materials that integrate adaptive light modulation with energy conservation for residential and industrial buildings. This paper presented a systematic strategy using a phase change emulsion gel to construct smart windows capable of thermal energy storage and release. Based on the thermoresponsive behavior of hydroxypropyl methylcellulose (HPMC) as the matrix, combined with the solid–liquid phase change of the oil phase and a refractive index matching mechanism between the water and oil phase, the smart glass achieved bidirectional coordinated tunability in transmittance, haze, and thermal management with a high enthalpy of 96.56 J g −1 . Within the operating temperature range from 24°C to 40°C, the total transmittance remained consistently above 85 %, while the haze can be continuously adjusted from 3.98 % to 78.98 % in response to ambient temperature. Prototype validation in residential/office buildings and agricultural facilities demonstrated broad adaptability and scalability, indicating strong potential to support the green and sustainable transformation of the construction sector.
研究领域:
材料科学
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智能建筑技术
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节能材料
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可持续建筑
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热管理
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2019
·
IF 3.42
Minjia Wang,Yang Xu,Yuan Liu,Wentao Wu,Shuaihua Xu
ATO hollow microspheres were synthesized with carbon ball template by the hydrothermal method . In order to study the likely formation mechanism of ATO hollow microspheres, the morphology, crystalline structure and microstructure were examined with XRD, SEM, EDS and HRTEM. The optical and thermal characteristics of the microspheres including absorption and reflectance, and thermal conductivity , infrared emissivity (8˜14 μm), and specific heat capacity were also measured. Silicone acrylic emulsion coating containing different dosages of ATO microspheres were then prepared, and their Vis-NIR transmittance and photo-thermal shielding performance were studied. Compared to solid microspheres, ATO hollow microspheres showed higher absorption, lower reflectance, lower thermal conductivity , higher specific heat capacity and higher infrared emissivity. Results also showed that ATO hollow microspheres introduction reduced the Vis-NIR transmittance of the silicone acrylic emulsion coating, and also enhanced the photo-thermal shielding performance of coating by higher absorption, slower thermal conduction and radiative cooling. This study indicates that coating containing ATO hollow microspheres is a promising material that can be applied for energy conservation.
研究领域:
材料科学
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纳米技术
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热功能涂层
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节能材料
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光学材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）