ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Xiaohui Sun,Dong Wang,Wei Wu,Xueying Zhao,Xuyang Zhang,Bo Wang,Xianhui Rong,Guohua Wu,Xiangwei Wang
The dual-band electrochromic smart windows (DESW) can selectively modulate visible (VIS) and near-infrared (NIR) transmittance, which is expected to effectively reduce building energy consumption. However, the complex preparation of dual-band electrochromic materials has restricted the further development of DESW. In this work, amorphous and crystalline Ti-doped WO3·2H2O (TiWH) were synthesized by a simple precipitation method, which does not require strict control of the oxygen content and temperature. Ti doping reduced the crystallinity of WO3·2H2O and increased the specific surface area. 3% TiWH films exhibited excellent dual-band electrochromism with high transmittance modulation (633 nm: 83.8%, 1050 nm: 72.5%), fast response time (bleached/colored time: 14.9/15.3 s at 633 nm, 16.0/3.5 s at 1050 nm), good coloration efficiency (633 nm: 22.8 cm2 C–1, 1050 nm: 90.8 cm2 C–1), and high capacitance of 47.1 mF cm–2 at 0.1 mA cm–2. The electrochromic device can still maintain good dual-band electrochromism (bright, cool, and dark modes). The excellent dual-band electrochromism and energy storage make TiWH have a good application prospect in green buildings.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jiahui Tao,Shouqin Tian,Bin Li,Tingfeng Ma,Longxiao Zhou,Xiujian Zhao
Thermochromic hydrogel-based smart windows (SWs) have received wide attention due to their high solar energy modulation efficiency by switching transparent and opaque state in the visible region. However, SWs are opaque to visible light rather than near-infrared (NIR) light at high temperatures, and the very limited NIR modulation greatly limits their energy-saving effect and practicality. Herein, we propose a reversible photo-thermochromic hybrid smart window (SW) consisting of photochromic W 18 O 49 and thermochromic polyacrylamide-poly (N-isopropylacrylamide) (PAM-PNIPAM) hydrogel to address above issues. It enables graded and dual-band sunlight regulation. In the initial state, the SW is transparent to visible and NIR light with luminous transmittance ( T lum ) of 79.49 %. As solar irradiation increases, it gradually blocks near-infrared light and maintains T lum due to the ultraviolet (UV)-triggered photochromic effect of W 18 O 49 . The increase in indoor temperature is delayed. When the solar irradiation reaches the maximum, the increase in ambient temperature and the photothermal effect of colored W 18 O 49 trigger the thermochromism of the hydrogel, thus the full-band sunlight is blocked and the sunlight transmittance is 0 %. The SW can reduce indoor temperature by 8.5 °C. This work sheds light on saving energy by fully utilizing solar energy through muti-mode switching in hybrid SW.
研究领域:
材料科学
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能源工程
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Haiding Zhong,Zhiao Han,Jinde Ling,Genglu Li,Yinyu Chen,Zhen Wang,Changhong Wang,De Li,Xiaoyu Wang
The development of electrochromic materials with high optical modulation and good cycling stability is a key focus in dual-band electrochromism. Hydrated tungsten oxide exhibits dynamic and independent control over the near-infrared and visible transmittance within the solar spectrum, garnering widespread attention in electrochromic applications. However, its optical modulation and cycling stability need further enhancement due to limited ion diffusion kinetics. Herein, a simple photo-deposition method is developed for synthesizing mesoporous WO 3 ·H 2 O films, characterized by high porosity and large surface area, which facilitates ion and electron transport within the films. Experimental results show that mesoporous WO 3 ·H 2 O can achieve three functional modes under different voltages: “bright”, “cold”, and “dark”. Compared to WO 3 ·H 2 O nanoplates, mesoporous WO 3 ·H 2 O electrode enables a superior dual-band electrochromic performance, including high optical modulation (74.1 % at 700 nm and 65.9 % at 1150 nm), rapid response times (13.5 s for coloring and 11.5 s for bleaching), high coloring efficiencies (138.9 cm 2 /C), and excellent cycling stability (optical modulation retention rate of 88.2 % after 1000 cycles). This research provides a novel approach to enhancing dual-band electrochromic performance through the incorporation of mesoporosity in materials.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Laser & Photonics Reviews
·
2024
·
IF 9.8
Ruiqing Zhang,Huidong Xie,Fu Wang,Qiyu Zhao,Lingyi Meng,Zuobin Tang,Binbin Su,Hu Liu
The luminescence property of various compounds is developed in the photoelectric applications field, while the near-infrared (NIR) dual-band emission of compounds is extremely challenging. Herein, 0D Cu(I)-based organic–inorganic module (ETA) 3 Cu 6 I 9 is synthesized to achieve NIR and cyan dual-band emission in metal halide systems. Density functional theory (DFT) calculations combined with comprehensive spectroscopic data reveal its emission mechanism. Under the excitation at 371 nm, (ETA) 3 Cu 6 I 9 shows the broadband NIR emission peaking at 775 nm with a large wavelength, attributed to the triple-cluster-center ( 3 CC) transition. Meanwhile, under 286 nm excitation, (ETA) 3 Cu 6 I 9 shows a bright cyan emission peaking at 490 nm, attributed to the metal-to-ligand charge transfer (MLCT) or halide-to-ligand charge transfer (XLCT) transitions. Moreover, (ETA) 3 Cu 6 I 9 presents relatively superior thermal and air stability. Benefiting from the good stability of (ETA) 3 Cu 6 I 9 , the as-fabricated NIR-LED device demonstrates great potential in biological imaging and night vision. This study opens up a new way for designing new non-toxic NIR and cyan dual-band emission materials, which guides to synthesize new materials in metal halide field.
研究领域:
材料科学
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光电子学
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化学
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2024
·Vol. 17
·期 1
·1-16
·
IF 31.6
Huang Zekun,Peng Yutao,Zhao Jing,Zhang Shengliang,Qi Penglu,Qu Xianlin,Yan Fuqiang,Ding Bing,Xuan Yimin,Zhang Xiaogang
A flexible dual-band electrochromic device with a high optical modulation and a long cycle life was reported.
The device assembled can modulate the visible light and near-infrared independently and effectively, showing higher energy-saving performance than commercial low-emissivity glass in most climatic zones around the world.
The flexible device also shows good energy storage and energy recycling performances, recycling 51.4% of the energy consumed in the coloration process for local reusing.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Laser & Photonics Reviews
·
2023
·Vol. 17
·期 6
·2200834
·
IF 11
Yanqiong Wang,Chaoyang Gong,Xi Yang,Tao Zhu,Ke Zhang,Yun-Jiang Rao,Lei Wei,Yuan Gong
Lasers are emerging as novel photonic tags for single-cell labeling, anticounterfeiting, and encryption technology due to their narrow linewidth, high spectral multiplexing capacity, and superior stimuli-responsiveness. These laser-encoded photonic tags mostly distinguish the heterogeneity but do not yet provide both tagging and sensing of biosamples, which is highly desirable for disease screening. Here, a photonic bandgap (PBG) fiber microlaser that works as a 2D tag and an immunosensor is developed. The tubular PBG structure allows strong light–matter interaction and supports dual-band lasing in the same optical fiber, enabling massive biosample tagging and sensitive biodetection. By encoding the random resonant peaks in the short-wave band and multiplexing in the spatial domain, a 2D laser tag is generated with a large encoding capacity (>2 8500 ). Immunosensing of microalbumin is realized by using the periodic resonant peaks in the long-wave band, and a limit of detection of 0.06 ng µL −1 is achieved. This work is inspiring for the development of high-performance, multifunctional integrated devices for disease screening.
研究领域:
生物医学工程
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光学工程
·
传感器技术
✓ 已验证
DOI
高影响因子
Journal of Physical Chemistry C
·
2025
·
IF 3.2
Xiaoyu Shen,Zhaozhu Qu,Shuai Ding,Congkai Guo,Yao Liu,Xiaoyu Yao,Wenjuan Xia,Guohua Wu,Yaohong Zhang
Tungsten oxide (WO3), as a typical electrochromic material, is well-known for its high coloration efficiency, wide optical modulation range, and excellent cyclic stability. In this study, tantalum (Ta)-doped WO3 films were fabricated by using the sol–gel method. The effects of Ta doping on the morphology and oxygen vacancy concentration of WO3 films were systematically investigated, along with how these factors influence their electrochromic performance. The results demonstrate that Ta doping significantly enhances the optical modulation (82.9% at 750 nm), accelerates the response time (5.0 s for coloring and 4.5 s for bleaching), and improves the optical reversibility of WO3 films compared to undoped WO3 films. Remarkably, the Ta-doped WO3 films exhibit substantial optical modulation in both the visible and the near-infrared regions, achieving outstanding dual-band electrochromism.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2023
·Vol. 170
·期 12
·126503
·
IF 3.9
Mengtao Sun,Likun Wang,Guohua Shi,Qiying Liu,Gang Xu,Yong Liu,Gaorong Han
Dual-band electrochromic (EC) smart windows, capable of selectively regulating visible (VIS) and near-infrared (NIR) light, are one of the most attractive candidates for significantly reducing the energy consumption of buildings. Niobium-tungsten bimetallic oxides exhibit a fast ion exchange rate and high cycle stability in the electrochemical field because of various structural chemistry in the pseudobinary system Nb2O5/WO3, showing excellent dual-band EC potential. Herein, we employ a facile hydrothermal technique to synthesize Nb18W16O93 (NWO) films with low temperature and facile procedure. The obtained NWO films exhibit impressive dual-band electrochromic performances, including high optical regulation (radiation blocking rates of 33.1% and 77.5% in the VIS and NIR band) and short coloring/bleaching time (12 s/2.6 s at 633 nm and 6.5 s/6.1 s at 1600 nm). These results demonstrate that NWO is a high-performance dual-band EC material and provide a practical strategy to synthesize the NWO electrodes with nanorod stacking architectures in a facile and low-cost way.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2020
·Vol. 49
·期 46
·17033-17038
·
IF 4.174
Weichi Liang,Jiali Wen,Yukai Zhao,Meng Zhang,Jiuxing Jiang
A layered aluminophosphate |C14H11NO|2[Al4(HPO4)4F4(H2O)2] (denoted as SYSU-2) with a new topology has been hydrothermally synthesized with N-methyl-9-acridone (NMA) as the organic structure-directing agent. Single-crystal X-ray diffraction analysis reveals that SYSU-2 crystallizes in a triclinic space group P, with the inorganic sheets stacked in an AA sequence. Hydrogen bonds are responsible for the neutral inorganic–organic layer connection. The layer structure of SYSU-2 is constructed by alternating AlO4F2 octahedra and PO4 tetrahedra. The topological analysis of SYSU-2 indicates an independent topology. The NMA layers are self-assembled with π–π interaction. SYSU-2 crystals show interesting dual-band emission fluorescence properties compared with NMA crystals. Under 406 nm UV irradiation, SYSU-2 crystals emit yellow light with two emission bands at 477 and 566 nm, while NMA crystals emit blue light with only one band at 473 nm. The differences may be derived from the difference of stacking orders and distance of NMA molecule layers between the two crystals.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2022
·Vol. 9
·期 16
·e202200606
·
IF 4.782
Xinchu Wang,Lan Zhang,Xinjiang Shi,Sixuan Xiao,Debao Xiao
Graphical Smart windows : The sulfonyl group-bearing 2,4,6-tri(pyridyl-4-(3-sulphonatopropyl))-1,3,5-triazine (TPST) together with K 3 [Fe(CN) 6 ]/K 4 [Fe(CN) 6 ] or 1,1′-ferrocenedimethanol exhibits fast dual-band electrochromic performance, which is useful for electrochromic intelligent dynamic window. The chromophore 2,4,6-tri(pyridyl-4-(3-sulphonatopropyl))-1,3,5-triazine (TPST) was used in hydrogel electrochromic devices (ECDs). The hydrogel consists of TPST, K 3 [Fe(CN) 6 ]/K 4 [Fe(CN) 6 ] (K3) or 1,1’-ferrocenedimethanol (FM), and sodium carboxymethyl cellulose. The devices showed dual-band properties, K3-TPST exhibiting absorption in NIR region at low voltage, while absorption of ECDs blue-shifting at −2.8 V. ECDs changed from transparent to olive green to black with a coloration efficiency of >126.74 cm 2 /C at 850 nm and high cycling stability. The optical contrast of FM-TPST ECD remains 79.3 % of the first cycle contrast after 2100 cycles. TPST can change its color from transparent to black at a high voltage of −2.2 V, with relatively short switching times (FM-TPST, 5.3 s, and K 3 [Fe(CN) 6 ]/K 4 [Fe(CN) 6 ]-TPST, 3.8 s). The response was accelerated up to 5 times by introducing a sulfonyl group with comparison to our previous work. The devices using TPST with sulfonyl moiety provide a new way for the fast-response energy-saving smart windows.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2025
·
IF 6.3
Mengtao Sun,Sijia Han,Yu Zeng,Fangyuan Zhao,Likun Wang,Sainan Ma,Guohua Shi,Qiying Liu,Yong Liu,Gaorong Han
Dual-band electrochromic (EC) smart windows, dynamically and independently controlling the transmittance of near-infrared (NIR) and visible (VIS) light, can significantly reduce the energy consumption of buildings. Here, we provide a self-nucleation solvothermal strategy to prepare nanostructured bimetallic niobium tungsten oxide (Nb 18 W 16 O 93 , NWO) on FTO substrates featuring a delaminated manner with a bush-like morphology composed of nanoneedles as the upper layer and a dense structure comprising nanoparticles as the down layer. Such structure combines good adhesion to the substrate and great electrochemical activity, leading to excellent dual-band electrochromic properties, including large optical modulation (72.6 % at 633 nm and 86.6 % at 1600 nm), high color rendering efficiencies (41.9 cm 2 /C at 633 nm and 53.2 cm 2 /C at 1600 nm), and long cyclic stability (retaining 85.4 % at 633 nm and nearly 100 % at 1600 nm after 1500 cycles). The as-prepared NWO electrode achieves three types of electrochromic effects: bright, cold, and dark electrochromic modes corresponding to the different threshold potentials of W and Nb elements during the electrochromic process. These results demonstrate that the nanostructured Nb 18 W 16 O 93 has promising performance as smart window electrodes in energy-saving buildings and propose a one-step template-free way to synthesize films with complex nanostructures.
研究领域:
材料科学
·
能源与环境科学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Liangmiao Zhang,jian Wu,Changzheng Pan,Hao Zeng,Yantong Li,Yanfeng Gao
Dual-band electrochromic smart windows (DESWs) have attracted widely concern for their potential in significantly reducing building energy consumption by selectively controlling near-infrared (NIR) and visible light (VIS) transmittance. However, its monotonous color changes limit its large-scale application. In this study, we designed a DESW based on the layer-stacked polyaniline (PANI)/silver Nanowires (Ag NWs) composite films . When PANI films is stacked layer by layer with Ag NWs, it not only performs dual band regulation, but also exhibits impressive electrochromic performance with rich color conversions (light yellow, yellow-green and blue-black). The four-layer PANI/Ag NWs composite film outperformed the pure single-layer PANI film because of the faster electron transfer , its coloring time and bleaching time at 525 nm were shortened to 6.7 s and 18.0 s, respectively, and the coloring efficiency was increased to 45.5 cm 2 C -1 . After 2500 cycles, the PANI/Ag NWs films tend to have better cycle stability. Therefore, the incorporation of Ag NWs enhances the electrochromic performance of PANI films, providing valuable insights for advancing single-component organic electrochromic materials.
研究领域:
材料科学
·
纳米科技
·
功能高分子
·
光电材料
·
建筑节能
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）