Cell Reports Physical Science
·
2021
·
IF 0
Weihong Li,Chongjia Lin,Wei Ma,Yang Li,Fuqiang Chu,Baoling Huang,Shuhuai Yao
Surface fogging reduces light transmission of optically clear materials and causes various problems in daily life. Transparent photothermal materials have recently emerged as an eco-friendly and sustainable solution to surface fogging. However, most reported photothermal materials only exploited the broadband spectrum of solar energy, and the spectral feature has yet to be tuned to optimize the visibility and photothermal effect simultaneously. Here, we develop a highly transparent, photothermally selective coating, based on solution-processed cesium-doped tungsten trioxide nanoparticles. The transparent selective photothermal coating provides a visible transmittance up to 82% and a high absorption of ultraviolet and near-infrared light >90%, and achieves a temperature increase by 38°C under 1-sun illumination, resulting in remarkable antifogging and defogging abilities under extremely frigid or humid conditions. Large-scale complex surfaces with photothermal coatings are deployed in field antifogging tests as well as long-term durability tests, showing their great potential in antifogging applications.
研究领域:
材料科学
·
能源科学
·
光学工程
✓ 已验证
DOI
PHYSICA SCRIPTA
·
2023
·Vol. 99
·期 1
·015526
·
IF 2.9
Tao Zhang,Siyu Cai,Nina Liang,Yalei Gao,Yuanpeng Li,Fuchi Liu,Lizhen long,Jun Liu
Zero-dimensional (0D) and one-dimensional (1D) mixed heterostructure semiconductors can bring superior electrical and optoelectronic performances due to the synergistic advantages of different dimensionalities. Here, a metal-semiconductor–metal (MSM) ultraviolet (UV) photodetector based on 1D-0D TiO2/CsPbBr3 heterostructure semiconductor is constructed, which exhibits excellent photodetection performance. A back-to-back Schottky contact is formed in the MSM (Au/TiO2/Au) structure due to the large band-energy bending resulted from the abundant surface-states at 1D-TiO2 surface. Under an applied voltage, a small saturation current flows through the device. Benefiting from the decoration of CsPbBr3 QDs, the dark current of MSM photodetectors can be further suppressed, and producing the improved on/off ratio (Ilight/Idark), photoresponsivity (Rλ), and detectivity (D*). PL properties study suggested that an energy transfer is occurred between the 0D-CsPbBr3 and 1D-TiO2. The TiO2/CsPbBr3 heterojunctions are beneficial for photo-induced charge transfer in hetero-interface because of the type-II energy-band alignment, but not non-radiative energy transfer from 0D-CsPbBr3 to 1D-TiO2. On the whole, this study depicts a fascinating coupling architecture of mixed-dimensional materials toward implementing low-cost and high-performance optoelectronic devices.
研究领域:
材料科学
·
光电子学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Yichen Zhu,Yubin Kang,Jing Su,Zhi Wen,Mingchun Li,Qiangqiang Zhu,Yue Zhai,Juan Kang,Yanghui Li,Le Wang
Lead halide perovskites have garnered interest in light-emitting diode (LED) applications due to their strong emission and tunable properties. However, conventional synthesis methods involve energy-intensive thermal processes and hazardous organic solvents, raising environmental concerns. In this study, we report a simple and eco-friendly mechanochemical approach that produces phase-pure blue-emitting Cs3Cu2I5 (emission at 440 nm) and yellow-emitting CsCu2I3 (emission at 570 nm) phosphors through polarity modulation and control of grinding duration. Our comprehensive analysis of the phase transitions during mechanochemical synthesis reveals that pure Cs3Cu2I5 was synthesized from a 3:2 precursor molar ratio in ethanol for 30 min, while pure CsCu2I3 was obtained from a 1:2 precursor molar ratio in an aqueous solution for 7.5 min. Moreover, Raman spectroscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy analyses confirmed that phase-pure phosphors were achieved through these methods. Finally, we fabricated a series of color-adjustable LEDs by mixing Cs3Cu2I5 and CsCu2I3 phosphors in different proportions. This demonstrates the potential of our mechanochemical synthesis for the efficient, large-scale production of next-generation lighting materials with tunable emission.
研究领域:
材料科学
·
光学工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·
IF 2.7
Hengxi Wang,Xiaonan Yang,Lijun Meng,Senjian Han,Shiqiang Wang,Yafei Guo,Tianlong Deng
Prussian blue analogue (PBA) membranes for efficient Cs removal via in situ synthesis have attracted much interest. Herein, copper-substituted PBA was developed and optimized on the surface of a substrate with the aid of tannic acid (TA). The fabricated Cu-PBA-TA membrane was systematically investigated for its Cs adsorption property in static and dynamic experiments. The as-prepared membrane showed a maximum adsorption capacity of 265.0 mg g−1, which was the highest when compared to that of previously reported PBA membranes. Applied in geothermal water, the Cu-PBA-TA membrane showed favorable selectivity (Kd, 8680 mL g−1) and the removal rate of Cs+ was about 90%. Its fast adsorption rate that reached equilibrium within 40 min and the benign reusability in the dynamic treatment of geothermal water confirmed the potential of the membrane for large-scale application.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Can Liu,Xinru Li,Haojie Ge,Xiaoping Yu,Yafei Guo,Tianlong Deng
The extreme pH and complex composition of radioactive wastewater pose great challenges to the chemical stability and properties of adsorbents. Herein, three kinds of metal-doped tin sulfides were developed by a simple one-pot method for cesium removal. DFT calculations combined with experiments were conducted to reveal their structures, stability, and adsorption properties. It was found that the crystal structures of tin sulfide became more stable after doping by Ni and Al. Particularly, the Al-doped material (NAlSS) exhibited the highest stability and adsorption performance because of the highest −COHP value of the Sn-S bond in NAlSS and the low binding energy between NAlSS and Cs + . The industrial application of the powdery NAlSS was further solved by wet spinning using glutaraldehyde cross-linked sodium alginate and hydroxyethyl cellulose (SHG) as the supporters. The obtained salt-resistant hydrogel fibers (SHG-NAlSS) exhibited excellent adsorption performance and stability in wide pH (2 ∼ 12) and temperature (298.15 ∼ 328.15 K) ranges. The maximum adsorption capacity reached 401.34 mg·g −1 within 10 min. The material was successfully applied for Cs + removal from wastewater, and the distribution coefficient of Cs + reached 255020.33 mL·g −1 . After 10 adsorption–desorption cycles, the adsorbent maintained good stability. These results, along with the fixed-bed adsorption, demonstrate that the developed material can be used as a candidate for Cs + removal from radioactive wastewater.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED MATERIALS
·
2024
·
IF 27.4
Zhenyu Liu,Wei Ju,Yongzheng Fang,Dingyue Sun,Xiaohong Zheng,Jingshan Hou,Ning Dai,Kenan Zhang,Yufeng Shan,Yufeng Liu
The heteroepitaxy of 2D materials with engineered bandgaps are crucial to broaden the spectral response for their integrated optoelectronic devices. However, it is a challenge to achieve the high-oriented epitaxy and integration of multicomponent 2D materials with varying lattice constants on the same substrate due to the limitation of lattice matching. Here, in-plane adaptive heteroepitaxy of a series of high-oriented 2D cesium bismuth halide (Cs 3 Bi 2 X 9, X = I, Br, Cl) single crystals with varying lattice constants from 8.41 to 7.71 Å is achieved on c -plane sapphire with distinct lattice constant of 4.76 Å at a low temperature of 160 °C in an air ambient, benefiting from tolerable interfacial strain by switching compressive stress to tensile stress during a 30° rotation of crystal orientation. First-principles calculation demonstrates that those are all thermodynamically stable phases, deriving from multiple minima of interfacial energy between single crystals and sapphire substrate. The detectivity of Cs 3 Bi 2 I 9 photodetector reaches up to 3.7 × 10 12 Jones, deriving from high single-crystal quality. This work provides a promising experimental strategy and basic theory to boost the heteroepitaxy and integration of 2D single crystals with varying lattice constants on low-cost dielectric substrate, paving the way for their applications in integrated optoelectronics.
研究领域:
材料科学
·
光学
·
半导体物理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Rong Liu,Luyao Yang,Meiying Xie,Fan Yang
The effective separation of coexisting 90 Sr 2+ and 137 Cs + in nuclear wastewater has been a persistent critical issue for water purification and recovery of valuable radioactive materials. In this study, a new monolayer amide modified graphene solid-phase adsorbent material, aminographene-aminocarbonylmethylglycine (AGO-AMG), with specific selectivity was developed to separate Sr 2+ from Cs + . At pH = 12, the simulated separation process of radioactive 90 Sr 2+ from 137 Cs + via AGO-AMG resulted in the highest separation factor ( β Sr/Cs ) = 2982; this value was the largest β Sr/Cs reported in the literature. The adsorption behavior was evaluated through the Langmuir and Freundlich isotherm models, demonstrating a maximum adsorption capacity of 421.94 mg/g for Sr ions. Adsorption elution recirculation experiments were used to examine the separation effect of AGO-AMG, and the results from these experiments confirmed its stable recycling ability. In addition, at ultralow concentrations of 30 ppb of Sr 2+ and Cs + , the removal rate of Sr 2+ remained at approximately 90%, indicating that AGO-AMG had good working ability at ultralow concentrations. Furthermore, the rapid separation capacity of the three-dimensional AGO-AMG films showed that the removal rate of the AGO-AMG films for Sr 2+ could be maintained between 97% and 99% when a syringe was used to add the feed solution at a rate of 4 mL/min and a pH = 12. Therefore, AGO-AMG could be considered a new and efficient solid-phase adsorbent material for the effective separation of 90 Sr 2+ from 137 Cs + in seawater after the discharge of nuclear contaminated water and has industrial application potential.
研究领域:
材料科学
·
环境科学
·
核废料处理
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Cheng Jianfeng,Zong Zihua,Dong Yanhui,Xie Jingli,Cao Shengfei,Zhang Qi,Peng Liyuan,Jiang Qiao
Geopolymers prepared from recycled fly ash have emerged as sustainable and effective solutions for the solidification of radioactive wastewater. In this study, fly ash-based geopolymers with varying 137 Cs concentrations are prepared, and their solidification effects as well as the compressive strength, porosity, microstructure, and leaching behavior after solidification are investigated. The results indicate the uniform incorporation of Cs into the prepared fly ash-based geopolymers. As the concentration of Cs in the geopolymers increases, the compressive strength decreases and porosity increases; however, the chemical structure remains almost unchanged. These observations are attributed to the electrostatic interaction between Cs + ions and the negatively charged [SiO 4 ] 4− and [AlO 4 ] 5− ions in the geopolymers. Moreover, the geopolymers exhibited lower leaching rates and cumulative leaching fractions in both deionized water and Beishan groundwater; the leaching rate and cumulative leaching fraction of 137 Cs in fly ash-based geopolymers were lower than the Chinese national standards. Further, the Cs solidification performances of the prepared geopolymers and traditional cement on real radioactive wastewater were compared. The fly ash-based geopolymers demonstrated a superior performance than traditional cement, making them a promising material for radioactive wastewater treatment. This study offers new insights into reducing radioactive waste and makes a substantial contribution to the knowledge of nuclear waste solidification processes employing fly ash-based geopolymers.
研究领域:
材料科学
·
环境科学
·
核废料管理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2020
·
IF 2.369
Hongxia Li,Lijiang Guo
The solubility and phase diagram of the CsCl–MgCl2–H2O ternary system, at a relatively wide temperature range, are significantly important for the extraction of the cesium resources from salt lakes. The isothermal dissolve equilibrium (IDE) method was used to determine the solubility of this ternary system at T = 273.15, 308.15, and 348.15 K, which have not been reported yet. The measured results indicated that the equilibrium solid phases in this ternary system from T = 273.15 to 348.15 K are CsCl, double salt CsCl·MgCl2·6H2O, and MgCl2·6H2O, and correspondingly there are three crystal regions and two cosaturated points for these solid phases. The solubility of the salt increased with the increase of the temperature, and the double salt CsCl·MgCl2·6H2O and CsCl crystal regions also became larger with the increasing temperature. However, the crystal regions of the MgCl2·6H2O solid phase are not enlarged obviously. Based on the solubility and phase diagram of CsCl–MgCl2–H2O at different temperatures, the separation process of CsCl resources has been proposed.
研究领域:
化学
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Nano
·
2016
·
IF 13.334
Shibin Sun,Dan Yuan,Yuan Xu,Aifei Wang,Zhengtao Deng
Colloidal nanocrystals of fully inorganic cesium lead halide (CsPbX3, X = Cl, Br, I, or combinations thereof) perovskites have attracted much attention for photonic and optoelectronic applications. Herein, we demonstrate a facile room-temperature (e.g., 25 °C), ligand-mediated reprecipitation strategy for systematically manipulating the shape of CsPbX3 colloidal nanocrystals, such as spherical quantum dots, nanocubes, nanorods, and nanoplatelets. The colloidal spherical quantum dots of CsPbX3 were synthesized with photoluminescence (PL) quantum yield values up to >80%, and the corresponding PL emission peaks covering the visible range from 380 to 693 nm. Besides spherical quantum dots, the shape of CsPbX3 nanocrystals could be engineered into nanocubes, one-dimensional nanorods, and two-dimensional few-unit-cell-thick nanoplatelets with well-defined morphology by choosing different organic acid and amine ligands via the reprecipitation process. The shape-dependent PL decay lifetimes have been determined to be several to tens to hundreds of nanoseconds. Our method provides a facile and versatile route to rationally control the shape of the CsPbX3 perovskites nanocrystals, which will create opportunities for applications such as displays, lasing, light-emitting diodes, solar concentrators, and photon detection.
研究领域:
材料科学
·
光学工程
·
化学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Xudong Zhao,Qinghui Meng,Geng Chen,Zhihao Wu,Guangai Sun,Guobing Yu,Liusi Sheng,Hanqin Weng,Mingzhang Lin
In this work, magnetic Nb-substituted crystalline silicotitanate (mag-Nb-CST), which can be used for separation of Sr 2+ and Cs + from aqueous solution, is successfully synthesized by embedding amine-functionalized Fe 3 O 4 into the Nb-substituted crystalline silicotitanate (Nb-CST), being characterized by various techniques such as XRD, SEM, EDS, XPS, and VSM. The studies on the adsorption behaviors show that the adsorption process reaches equilibrium within about 8 h, and the maximum adsorption capacity on mag-Nb-CST is 14.38 mg g −1 at pH 11.00 for Sr 2+ , and 11.18 mg g −1 at pH 4.00 for Cs + , respectively. Besides the excellent selectivity towards Sr 2+ and Cs + over various lanthanides and actinides, the pH dependence on the adsorption capacity suggests a possibility to separate Sr 2+ and Cs + from each other by simply adjusting pH. Mag-Nb-CST is able to remove most of the Sr 2+ and Cs + at ppb level. Even in real seawater, it is able to remove 94.19% of Cs + . Moreover, mag-Nb-CST shows good acid-resistance and radiation stability. The crystal structure and morphology remained almost the same after γ-irradiation with an adsorbed dose up to 435.8 kGy. Most importantly, only less than 0.1% of Fe is leached out from mag-Nb-CST at pH > 2, indicating that the embedded Fe 3 O 4 nanoparticles are protected from corrosion by the coated Nb-CST, which is in favor of elimination of Sr 2+ and Cs + in acidic solutions. Thus, mag-Nb-CST is a promising adsorbent in the treatment of acidic radioactive liquid wastes, and the purification of contaminated seawater.
研究领域:
材料科学
·
环境科学
·
核化学
✓ 已验证
DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2022
·Vol. 28
·期 50
·e202201095
·
IF 5.02
Peng Gao,Zihao Cui,Xiaolei Liu,Yaqiang Wu,Qianqian Zhang,Zeyan Wang,Zhaoke Zheng,Hefeng Cheng,Yuanyuan Liu,Qing Li,Baibiao Huang,Peng Wang
Graphical Lead halide perovskite has triggered a lot of research due to its superior optical properties. However, halide perovskite materials have poor environmental stabilities and are easily affected by external factors such as water and heat, resulting in structural decomposition and performance failure. Contrary to this commonplace concept, CsPbBr 3 can convert to CsPb 2 Br 5 partially when meeting a small amount of water, and the CsPbBr 3 @CsPb 2 Br 5 composite is synthesized by an in situ method accordingly. The CsPbBr 3 @CsPb 2 Br 5 composite shows an enhanced catalytic performance compared with pure CsPbBr 3 , as well as a dramatically synergistic effect of photo and thermal for catalytic CO 2 hydrogenation. Lead halide perovskite has triggered a lot of research due to its superior optical properties. However, halide perovskite materials have poor environmental stabilities and are easily affected by external factors such as water and heat, resulting in structural decomposition and performance failure. Contrary to this commonplace concept, it is found that CsPbBr 3 (CPB) can convert to CsPb 2 Br 5 (CP2B5) partially when meeting a small amount of water, and the CsPbBr 3 @CsPb 2 Br 5 (CPB@CP2B5) composite is synthesized by an in situ method accordingly. The CPB@CP2B5 composite shows an enhanced catalytic performance compared with pure CPB, as well as a dramatically synergistic effect of photo and thermal for catalytic CO 2 hydrogenation. The CO production rate of CPB@CP2B5 is determined as 69 μmol g −1 h −1 under light irradiation at 200 °C, which is 156.8 and 43.4 times higher than that under pure photo (0.44 μmol g −1 h −1 ) and pure thermal (1.59 μmol g −1 h −1 ) condition, respectively. Meanwhile, the CPB@CP2B5 sample is also stable, which shows no significant decline in the catalytic activity during 8 cycles of repeated experiments. The probable mechanism is explored by utilizing a series of in situ characterizations.
研究领域:
材料科学
·
催化化学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）