POLYHEDRON
·
2019
·
IF 2.284
Ning Tian,Yifang Dai,Qing Liu,Wei Dai
A general synthetic strategy for HS-Fe 3 O 4 @MIL-53(Al) adsorbent has been developed in this work. The composite material exhibits an efficient capture performance for rubidium ion due to sulfhydryl group and magnetic Fe 3 O 4 doped in its porous cavity. The results of X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, and N 2 adsorption–desorption proved that the HS-Fe 3 O 4 was immobilized in the composite material. High Rb + uptake capacity over the HS-Fe 3 O 4 @MIL-53(Al) is attributed to the exchange of acidic protons between the sulfhydryl group and the Rb + . The pseudo-second-order and Freundlich model could make a good description of the adsorption process. The Rb + sorption selectivity was moderately influenced by any co-ions effect (K + , Na + and Cs + ) due to HS-Fe 3 O 4 doped. These results reveal that our novel composite material might be a promising industrial adsorbent for Rb + capture.
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
CRYSTENGCOMM
·
2021
·Vol. 23
·期 40
·7081-7089
·
IF 3.545
Qi-Ming Qiu,Ke-Ning Sun,Guo-Yu Yang
Five new rubidium borates, namely Na1/3Rb5/3[B4O5(OH)4] (1), Rb4[B12O18(OH)4] (2), Rb2Ba[B12O18(OH)4] (3), Rb2[B5O8(OH)] (4) and NaRb0.5[B6O10]·0.5H3O (5) have been synthesized under solvothermal conditions. Compound 1 features a 0D structure composed of [B4O5(OH)4]2− clusters. After changing the metal salt, new cyclic [B12O20(OH)4]8− clusters in 2 and 3 are formed, resulting in 1D chains. Such a chain structure is first discovered in dodecaborates. By tuning the reaction temperature and pH of the reaction media, compound 4 with a 4-connected 2D oxoboron layer constructed from partially protonated [B5O10(OH)]6− and compound 5 with a 6-connected 3D framework constructed from [B6O13]8− clusters are successfully isolated. Since compounds 1 and 4 crystallize in the non-centrosymmetric (NCS) space group, second harmonic generation (SHG) measurements and dipole moment calculations have been carried out. The SHG response of 4 is 2.0 times that of KH2PO4 (KDP), which is higher than those of related analogues.
研究领域:
材料化学
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晶体学
✓ 已验证
DOI
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2018
·Vol. 32
·期 10
·e4511
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IF 3.581
Yuanyuan Wang,Jicheng Xu,Dongya Yang,Tao Zhang,Fengxian Qiu,Jianming Pan
Calixarenes have been drawing tremendous interest due to their special structure, superior properties and numerous applications. In this work, a novel adsorbent material, calix[4]arenes functionalized dual-imprinted mesoporous film (DIMFs) for the simultaneous selective recovery of Li(I) and Rb(I), was prepared via surface ionic imprinting. Compared with ordinary adsorbent materials, the synthesis process of the films used a cheap bio-template and did not require extra steps but significantly enhances adsorption properties. The morphology and structure of prepared DIMFs were characterized by scanning electron microscopy, transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and nitrogen adsorption–desorption measurements. Adsorption parameters (pH and temperature), adsorption kinetics and adsorption isotherms of the DIMFs were investigated by adsorption experiments. This novel adsorbent has inorganic–organic hybrid frameworks, high specific surface area and uniform pore size. The Langmuir and Freundlich isotherms, pseudo-first-order and pseudo-second-order kinetics of DIMFs were investigated; suggesting that the adsorption data well fits the Langmuir isotherm model, and the adsorption kinetics can be described by the pseudo-second-order kinetic model. In addition, dual-imprinted mesoporous film exhibited superior selectivity for Li(I) and Rb(I). Cycle test demonstrated an outstanding of reusability, which appreciating their potential for industrial application.
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 CHEMICAL AND ENGINEERING DATA
·
2022
·
IF 3.119
Ziyu Zhuang,Dongdong Li,Jinshun Lei,Dandan Gao,Dewen Zeng
Highly concentrated boron is widespread in salt lake brine and nuclear wastewater. Treatment of these aqueous solutions involves the solubility of extensive boron-containing minerals. Recently, we concentrated on the temperature-dependent solubility of the H3BO3 + salt + water system. Here, we systematically determined the ternary solubility isotherms in the H3BO3 + RbCl + H2O and H3BO3 + NH4Cl + H2O systems at T = (273.15, 298.15, 323.15, 348.15 and 363.15) K, using an isothermal equilibrium method. The results showed that both ternary systems belonged to a simple eutectic case. The solubility isotherms consisted of the solubility branches of H3BO3(cr) and RbCl(cr) or NH4Cl(cr). Using a revised Pitzer–Simonson–Clegg (rPSC) model implemented in the ISLEC software, these ternary solubility data were represented by fitting the interaction parameters between H3BO3 and RbCl and H3BO3 and NH4Cl. With the help of these models, polythermal phase diagrams of the two ternary systems are predicted.
研究领域:
化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Hui Yang,Baozhong Ma,Shuyang Shi,Jiancheng Yu,Yubo Liu,Zhihe Cao,Chengyan Wang
The alkali method has been proven to be an effective approach for lithium (Li) and rubidium (Rb) extraction; however, the significant dissolution of silicon (Si) remains a challenging issue. A high Si concentration in the leachate can cause filtration difficulties and pipeline blockages, while also negatively affecting phase separation during the subsequent extraction of Rb. Additionally, since the leachate needs to be recycled, the removal of Si from the leach liquor is essential. This study introduces an innovative approach of adding Al(OH) 3 for Si removal during the alkali leaching of lithium concentrate. Preliminary single-factor experiments demonstrate that Al(OH) 3 effectively reduces the Si concentration in leach liquor but also consumes NaOH, leading to a decline in Li and Rb leaching efficiency. Given the interaction between Al(OH) 3 addition and NaOH concentration on element leaching, Response Surface Methodology was employed to predict and optimize the parameters of the leaching process. Under the optimal parameters of 290 g/L NaOH concentration, 39 % Al(OH) 3 addition, and 120 °C leaching temperature, the experimental leaching efficiencies of Li, Rb, and Si were 99.8 %, 87.9 %, and 4.1 %, respectively. Subsequently, Rb was separated with Li via solvent extraction under high alkaline conditions. The single-stage extraction efficiency of Rb was 82.8 % at optimized conditions, and after four-stage countercurrent extraction, the overall Rb recovery could reach 99.2 %. The innovative alkali method proposed not only enables the synergistic extraction and separation of Li and Rb but also achieves effective Si removal and its utilization.
研究领域:
化学工程
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 20
·e202401258
·
IF 1.9
Conglin Zhang,Haichao Li,Bingxuan Du
Graphical In this paper, the activated carbon material AC600 is prepared from lignin as raw material and RbCl as activator at 600 °C, and a series of characterization analysis and thermodynamic experiments are carried out. This study proves that RbCl can be used as an activator for the activation of lignin. In order to prepare carbon adsorbent materials, lignin was used as raw material and rubidium chloride as activator, activated carbon materials were prepared by chemical activation method, and its structure was characterized and its adsorption performance on methylene blue solution was investigated; the adsorption of crystalline violet dye was carried out at different temperatures, and the adsorption thermodynamics was studied. The results showed that: the specific surface area of the activated carbon was 433.32 m 2 /g, the pore volume was 0.2191 cm 3 /g, and the average pore size was 2.0222 nm; the adsorption value of methylene blue could reach 172.0 mg/g, and it could quickly and efficiently adsorb methylene blue solution; the adsorption effect on crystal violet solution was good, and the saturated adsorption amount at 40 °C was up to 279 mg/g, and the removal rate reached 93 %, belonging to the spontaneous adsorption thermodynamic reaction. The experiment proved that rubidium chloride can be used as an activator to activate lignin raw materials to prepare activated carbon samples, and can effectively adsorb dyes.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2024
·
IF 2
Yueheng Wang,Ziyu Zhuang,Yanfei Fan,Dandan Gao,Dongdong Li
Ammonium ion is of the same charge as alkali ions and with similar ionic radius as potassium, rubidium, and cesium ions. Solid solutions are very common between ammonium and alkali salts, which is of great interest for understanding the geology, soil, and environment fate of these elements. In this study, the solid–aqueous equilibrium in the NH4Cl + RbCl + H2O and NH4Cl + CsCl + H2O systems was determined at 298.15 K. For each system, two incontinuous solid solutions, i.e. (NH4,Rb)Cl(α) and (Rb,NH4)Cl(β), or (Cs,NH4)Cl(α) and (NH4,Cs)Cl(β), presented, and their composition and structure were studied using Schreinemakers’ wet residues analysis, XRD, and Raman characterization. The equilibrium between these solid solutions and aqueous solutions were well modeled using an integrated solution equilibrium calculator program, in which a Pitzer-Simonson-Clegg model and a subregular model were implemented for describing the nonideality of aqueous phase and solid solution. According to the experimental and thermodynamic modeling results, NH4Cl can dissolve RbCl and CsCl in the solid state (NH4,Rb)Cl(α) or (NH4,Cs)Cl(β) with limited solid solubilities of 0.18 or 0.051 in mole fraction, respectively. RbCl or CsCl can also dissolve NH4Cl in the solid state (Rb,NH4)Cl(β) or (Cs,NH4)Cl(α) with limited solid solubilities of 0.37 and 0.095 in mole fraction, respectively.
研究领域:
化学
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环境科学
·
地质学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yining Ma,Guangyao Sun,Xinyu Meng,Keyu Shi,Chenxu Ge,Di Wu,Shidong Ji,Xun Cao
The application of fluorescent powders to latent fingerprints development can enhance the contrast and minimize background interference, resulting in high-quality fingerprint images. In this study, two metavanadate phosphors, CsVO 3 and RbVO 3 , were successfully prepared via solid-state methods, and their fluorescence properties were investigated. When employed for latent fingerprints detection, both CsVO 3 and RbVO 3 exhibited well-defined and distinct papillary ridges of the fingerprint patterns with clear detailed features on various objects with different background interferences, including impermeable substrates, semipermeable materials as well as permeable paper. Additionally, the color of the visualized fingerprint images could be adjusted from yellow to green by changing the wavelength of ultraviolet light from 365 nm to 254 nm, demonstrating greater adaptability and flexibility of CsVO 3 and RbVO 3 . Overall, both powders exhibited remarkable sensitivity, selectivity, and contrast with minimal background interference, revealing the potential of CsVO 3 and RbVO 3 for latent fingerprints development.
研究领域:
法医学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 31
·期 11
·2008211
·
IF 18.808
Fei Li,Sheng Huang,Xinyu Liu,Zelong Bai,Zhiteng Wang,Huidong Xie,Xuedong Bai,Haizheng Zhong
Perovskite quantum dots are emerging as new generation functional materials for display applications. The issue of perovskite “red wall” has been an obstacle for their use in display technology. In this study, the fabrication of γ-Rb x Cs 1– x PbI 3 gradient-alloyed quantum dots in polymeric matrix through a rational designed in situ fabrication process is reported. The formation of γ-Rb x Cs 1– x PbI 3 gradient-alloyed structure can be explained by considering the lattice mismatch and solubility difference between γ-CsPbI 3 and RbPbI 3 . The photoluminescence emission of γ-Rb x Cs 1– x PbI 3 gradient-alloyed quantum dots can be tuned from 675 to 620 nm with full width at half maximum of 31 nm and maximum quantum yields up to 91%. Importantly, the packaged films retained about 95% of its original photoluminescence intensity after 1000 h aging at the test conditions of 60 °C, 90% RH and 40 °C, 90% RH with 3 mW cm −2 , 455 nm blue light irradiation, respectively. By integrating a red and green dual emissive film with blue Mini LEDs, a LCD backlight of a color space of ≈130% of NTSC 1931 standard is achieved with matching rate of 100%.
研究领域:
材料科学
·
显示技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2017
·
IF 5.715
Xuechao Xu,Yang Li,Dongya Yang,Xudong Zheng,Yuanyuan Wang,Jianming Pan,Tao Zhang,Jicheng Xu,Fengxian Qiu,Yongsheng Yan,Chunxiang Li
With the increasing market demands of lithium (Li) and rubidium (Rb) around the world, the shortage of Li and Rb seriously restrict the further development of relevant industries. In this work, we report a superior lithium/rubidium imprinted hierarchical porous silica (Li/Rb-IHPS) for the simultaneous selective extraction of lithium and rubidium from aqueous solution. Li/Rb-IHPS was prepared by ion imprinting technology (IIT) by using 12-crown-4 (12-C-4) and N-[(3-Trimethoxysilyl) propyl] ethylendiamine triacetic acid trisodium salt (TMS-EDTA) as functional monomers . The structure, thermal property and surface functional groups of as-prepared Li/Rb-IHPS material were characterized by Fourier infrared spectroscopy (FT-IR), elemental analysis, thermogravimetric analyzer (TGA), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and nitrogen adsorption-desorption. The results indicate that the as-prepared material has a hierarchical mesoporous structure (peak pore at ca. 3–4 nm and 12–15 nm) with high specific surface area (BET) (242.47 m 2 g −1 ). The adsorption experiments show that Li/Rb-IHPS has a high adsorption capacity for Li + (166 μg g −1 ) and Rb + (141 μg g −1 ). The adsorption process can be described by pseudo-second-order kinetic model , suggesting that the adsorption for Li + and Rb + is controlled by chemical adsorption . And the Langmuir isotherm model can well fit the experimental data, illustrating that the adsorption process are all monolayer adsorption reactions. Additionally, the adsorption selectivity and reusability measurements were also investigated. Compared with some ions such as Na + , K + , Mg 2+ and Cs + , Li/Rb-IHPS material shows excellent adsorption selectivity for Li + and Rb + . After five cycles, the Li/Rb-IHPS material remains high adsorption capacity for Li + (94%) and Rb + (93%). The obtained results indicate that Li/Rb-IHPS can be used to extract the lithium and rubidium from oceans and lakes selectively, rapidly, and environmentally.
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
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Bo Wang,Congyang Zhang,Shouqiang Huang,Zhichun Li,Long Kong,Ling Jin,Junhui Wang,Kaifeng Wu,Liang Li
Lead halide perovskite nanocrystals (NCs) as promising optoelectronic materials are intensively researched. However, instability is one of the biggest challenges needed to overcome before fulfill their practical applications. To improve their stability, we present a postsynthetic controlled phase transformation of CsPbBr3 toward CsPbBr3/Rb4PbBr6 core/shell structure triggered by rubidium oleate treatment. The resulting core/shell NCs show exceptional photostability both in solution and on-chip. The solution of CsPbBr3/Rb4PbBr6 NCs can remain over 90% of the initial emission photoluminescence quantum yields after 42 h of intense light-emitting diodes illumination (450 nm, 175 mW/cm2), which is even better than the conventional CdSe/CdS quantum dots whose emission drop to 50% after 18 h under the same condition. We believe that the exceptional photostability should be resulted from the protection of the robust Rb4PbBr6 shell on CsPbBr3 NCs.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2023
·
IF 2.6
Yanfei Fan,Ziyu Zhuang,Dandan Gao,Dongdong Li,Dewen Zeng
Solid–liquid phase equilibrium data of the Li2SO4 + Rb2SO4 + H2O and Li2SO4 + Cs2SO4 + H2O systems are of importance for the design of alkali metal element extraction processes from sulfate leaching solution of lepidolite. Considering the serious inconsistency of the reported solid phases, especially double salts and solid solutions, phase diagrams of the two systems were reinvestigated experimentally. The results on the Li2SO4 + Rb2SO4 + H2O system at 298.15 K show five solids, i.e., Rb2SO4, Rb2SO4·Li2SO4, Rb2SO4·3Li2SO4·2H2O, Rb2SO4·5Li2SO4·4H2O, and a solid solution with the end members Rb2SO4·5Li2SO4·4H2O and Li2SO4·H2O. For the Li2SO4 + Cs2SO4 + H2O system at 298.15 K, the results also show five solids, i.e., Cs2SO4, Cs2SO4·Li2SO4, Cs2SO4·3Li2SO4·2H2O, Cs2SO4·5Li2SO4·4H2O, and Li2SO4·H2O, while there is no solid solution phase with the end members Cs2SO4·5Li2SO4·4H2O and Li2SO4·H2O. Moreover, the single crystal structures of Rb2SO4·3Li2SO4·2H2O and Cs2SO4·3Li2SO4·2H2O were determined.
研究领域:
化学工程
·
材料科学
✓ 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）