INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Jianwei Dao,Liang Yang,Zhihao Jiang,Zihao Han,Tiqin Wei
Narrow-band red inorganic phosphors excited by near-ultraviolet (n-UV) light have significant application potential in the manufacture of white light-emitting diodes (LEDs) with high R9 index. Novel near-UV-excitable Eu 3+ doped K 3 Ca 2 (SO 4 ) 3 × (X = F, Cl, Br) halosulphate phosphors were synthesized via high-temperature solid-state reaction method. By modifying the non-activating ions in the host matrix, the luminescence properties of Eu 3+ were effectively enhanced across various matrices, thereby optimizing the performance of this series of phosphors. As-prepared phosphors can be activated under 397 nm excitation and emit red light at 619 nm, corresponding to 5 D 0 → 7 F 2 transitions of Eu 3+ . Optimization of the doping concentration revealed that the optimal Eu 3+ concentration for different host matrices is 0.13. Notably, the K 3 Ca 2 (SO 4 ) 3 F host matrix doped with Eu 3+ exhibits stronger emission intensity and better performance. The K 3 Ca 2 (SO 4 ) 3 F:0.13Eu 3+ phosphor exhibited long fluorescence lifetime of 0.42 ms and high color purity of 92.25 %. The emission intensity of K 3 Ca 2 (SO 4 ) 3 F:0.13Eu 3+ at 423 K can retain 89.5 % of its value at room temperature. A white LEDs device was fabricated by mixing and encapsulating K 3 Ca 2 (SO 4 ) 3 F:0.13Eu 3+ phosphor with commercial BaMgAl 10 O 17 :Eu 2+ blue and (Ba, Sr) 2 SiO 4 :Eu 2+ green phosphors onto 397 nm n-UV InGaN chip. The device emits bright white light and exhibits high color rendering index (Ra = 79.9, R9 = 86.5) and a suitable correlated color temperature (CCT = 5915 K) at 50 mA drive current. The results suggest that this work provides new assistance in achieving high color rendering white LEDs excited by n-UV light.
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JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2025
·
IF 6.2
Chenhao Li,Yi Niu,Linlin Yi,Yaoqiang Li,Jia Fu,Fang Tang,Kaiyuan Li,Yanyan Zou
This paper explores the application of zeolitic imidazolate framework-8 (ZIF-8) in pyrolytic disposal of poly(vinyl chloride) (PVC), with the goal of assessing the in situ catalytic removal and capture effect of ZIF-8 on Cl, elucidating the migration pattern of Cl, revealing the mechanism of in situ Cl capture by ZIF-8. The results demonstrate that excellent catalytic and Cl trapping properties are exhibited by ZIF-8, and an additional 311.1 mg/g of organic Cl from PVC is facilitated to be removed at 250 ºC. The catalytic effect enhances Cl trapping at low temperatures. The solid-solid reaction between PVC and ZIF-8 during in situ pyrolysis significantly improves Cl capture compared to ex situ pyrolysis. During in situ pyrolysis, ZIF-8 shows excellent Cl capture between 250 and 350 ºC, where Cl is primarily captured in the solid phase as inorganic Cl. ZIF-8 achieves optimal Cl capture at 300 ºC, reaching a peak HCl removal rate of 89.5 %. At this temperature, the content of solid-phase inorganic Cl reaches a maximum of 442.0 mg/g, accounting for 78.7 wt% of the total Cl content. The key to Cl capture lies in the chemical adsorption sites of Zn²⁺ and organic ligands in the ZIF-8 structure, which can react with Cl in both solid-solid and gas-solid reactions. Additionally, crystals formed during pyrolysis create an adsorption barrier, ultimately enabling efficient Cl capture.
研究领域:
环境科学
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材料科学
·
化学工程
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DOI
高影响因子
CORROSION SCIENCE
·
2025
·
IF 8.5
Shiyao Du,Dongfang Jia,Xin Guo,Jinke Wang,Zhibin Chen,Lingwei Ma,Dawei Zhang
The coupling effect of adipic acid and Cl - on the corrosion of SAC305 solder alloy is systematically investigated. Electrochemical measurements prove that Cl - could completely destroy the protectiveness of adipic acid and accelerate metal corrosion. Morphology characterizations and XPS analyses verify that the amount of adsorbed adipic acid on the metal surface is largely reduced due to competitive adsorption of Cl - . TEM and Mott-Schottky tests further reveal that the defect density of the oxide film developed in Cl - environment is three times higher than that in adipic acid, which is responsible for the faster anodic dissolution.
研究领域:
材料科学
·
电化学
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2022
·
IF 24.319
Xiao Yu,Mengyi Shi,Yixuan Fan,Lixia Yang,Jie Zhang,Wei Liu,Weili Dai,Shuqu Zhang,Lei Zhou,Xubiao Luo,Shenglian Luo
Mn 2 O 3 is an exceptional earth-abundant mineral that has been extensively applied in catalytic oxidation because of the strong redox couples like Mn 3+ /Mn 2+ and Mn 4+ /Mn 3+ exposed on Mn 2 O 3 surface. Herein, the catalytic activity of Mn 2 O 3 in photothermal degradation of toluene was regulated by halogens including F - , Cl -, and Br - . As the electronegativity ordered in F (3.98) > O (3.44) > Cl (3.16) > Br (2.96), F - doped Mn 2 O 3 overperforms Cl - doped and Br - doped Mn 2 O 3 in decomposing toluene. DFT theoretical calculation illustrates that F - attracts the shared electrons from Mn to itself, the deviated charge center stretches the adjacent Mn-O bonds and boosts the generation of abundant oxygen vacancies, helping to strengthen the catalytic activity of Mn 2 O 3 . Conversely, Mn-O bonds are shortened by Cl - and Br - that have lower electronegativity than O. The multiple electrons circling Cl - and Br - push Mn towards O and squeeze Mn-O bonds, resulting in the formation of passivated Mn 2 O 3 . In conjunction with Mn redox couples and oxygen vacancies, 99% of 400 ppm toluene can be eliminated by F - doped Mn 2 O 3 , corresponding mineralization rate is high up to 95.8%.
研究领域:
催化
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环境科学
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材料科学
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化学工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
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IF 8.2
Kun Lang,Yuanyingxue Gao,Xudong Xiao,Qi Li,Mingyang Liu,Jianan Liu,Huiquan Gu,Wei Wu,Huiyuan Meng,Baojiang Jiang
Seawater electrolysis offers a sustainable pathway for green hydrogen production, but chloride-induced side reactions, particularly chlorine evolution (ClER), limit the stability and efficiency of catalysts. Based on an interface-engineering strategy, a bifunctional CoP–MXene electrocatalyst was designed and fabricated, in which electrons are transferred from the Ti sites of the MXene support to the adjacent Co active centers of CoP. This directional electron donation modulates the Co electronic structure, generating electron-rich Co sites that effectively suppress Cl– adsorption via electronic repulsion while preserving the OH– reaction pathways through favorable proton–electron coupling. X-ray absorption fine structure (XAFS) spectroscopy, in situ Raman spectroscopy, and density functional theory (DFT) calculations further validate this electron modulation mechanism. In 1 M KOH electrolyte, CoP–MXene achieves a hydrogen evolution reaction (HER) overpotential of only 93 mV at 10 mA cm–2 and an oxygen evolution reaction (OER) current density of 50 mA cm–2 at 346 mV. In alkaline seawater, CoP–MXene exhibits exceptional HER performance (10 mA cm–2 @ 101 mV). Moreover, in an anion exchange membrane (AEM) electrolyzer (at 2 A cm–2 current density), the catalyst maintains over 500 h of stability in seawater with only 8.5% current decay, significantly outperforming the control samples. This study provides a new design strategy for the development of chloride-resistant electrocatalysts, advancing the application of seawater electrolysis technologies.
研究领域:
电化学
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催化
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能量转换
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材料科学
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可再生能源
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表面科学
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lin Cao,Jinming Piao,Wei Wang,Weijie Fan,Dongxiao Han,Yantong Pei,Ye Chen,Yue Zhang
To enhance corrosion resistance and extend the service life of coatings, layered double hydroxides (LDH) have been embedded into coatings to create a hybrid of organic–inorganic micro/nano-containers, improving the coatings’ physical barrier properties. Herein, an elaborately designed strategy is proposed to in-situ grow LDH on nanofibers , thereby obtaining polyvinylidene difluoride/hydrotalcite@deprotonated benzotriazole (PVDF/LDH@BTA − ) composite nanofibers , followed by incorporation into an epoxy resin to formulate the composite coating. The even distribution of LDH within the coating, aided by nanofibers, significantly bolstered the coating’s barrier effect. Upon exposure to corrosive environments, the hydrotalcite structure within PVDF/LDH@BTA − adsorbs chloride ions through anion exchange, capturing up to 0.26 mmol/cm 2 of chloride ions. Concurrently, corrosion inhibitors were released, forming a protective layer on the copper surface to substantially mitigate the corrosion process. This innovative approach markedly enhances the composite coating’s long-term corrosion resistance.
研究领域:
材料科学
·
腐蚀与防护
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高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2021
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IF 4.051
Zhihao Chen,Haiyang He,Zhuoqi Wen,Zhongjie Cui,Shiliang Mei,Dan Yang,Xian Wei,Wanlu Zhang,Fengxian Xie,Bobo Yang,Ruiqian Guo
Broadband emission Mn 2+ doped lead halide perovskites are deemed as promising phosphor materials for solid state white light-emitting-diodes (WLEDs). Herein, we report a facile gram-scale synthesis of Mn-doped CsPb(Br/Cl) 3 phosphors by doping MnCl 2 into CsPbBr 3 perovskite nanocrystals at room temperature. The obtained phosphors present dual-color emission with blue emission at 463 nm and red emission at 602 nm. Increasing MnCl 2 doping amount can enhance the red emission while more 3-Aminopropyltrimethoxysilane (APTMS) ligands can repress Mn related impurity and provide high stability. Further, two kinds of WLEDs (monocomponnet and two-component) are demonstrated. The monocomponent WLED exhibits warm white light under various driving currents (30 mA–150 mA), and the two-component WLED shows good chromatic performance close to ideal white light (0.33, 0.33), demonstrating their potential applications in WLED devices.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
Materials Today Chemistry
·
2022
·
IF 7.613
J. Ding,X. Cui,Q. Ren,Y. Mao,J. Zhang,G. Zhou,X.-M. Zhang
Organic-inorganic metal halides have garnered extensive attention due to their versatile structures as well as fascinating optical properties , among which especially antimony halides are the focus of recent research. Herein, we design a series of novel zero-dimensional (0D) antimony halides of (C 13 H 14 N 3 ) 3 SbCl 6– x Br x ( x = 0, 3, 6) with bright and tunable broadband emissions from yellow (576 nm) to orange (600 nm), which are attributed to the triplet self-trapped excitons (STEs) of the six-coordinated [SbX 6 ] 3– (X = Cl − or Br − ) units. The role of halogens on their specific 3 P 1 → 1 S 0 transition is determined, wherein Cl/Br transmutation reveals a common law modulating photoluminescence behaviors. Furthermore, a new two-step compound technology is innovatively developed for performance optimization, enabling by incorporating the pristine antimony halides into polymethyl methacrylate (PMMA) with high transparency and strong moisture resistance . The composites (C 13 H 14 N 3 ) 3 SbCl 6– x Br x /PMMA ( x = 0, 3, 6) were fabricated through a demanding technology that significantly improve the processability and water stability of antimony halides while maintaining high photoluminescence quantum yields . This work not only proposes a method for halogen substitutions to tune emission, but also opens up a feasible research avenue for performance optimization in the multifunctional luminescence materials.
研究领域:
材料科学
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光学
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化学工程
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DOI
高影响因子
LANGMUIR
·
2023
·
IF 3.9
Fang Chen,Li Yin,Teng He,Tao Chen,Hangbo Yue,Chufen Yang
To enhance the stability of the polymeric micelles and optimize their drug-controlled release ability, three disulfide-linked polyethylene glycol methyl ether methacrylate–disulfide–poly(ε-caprolactone-co-γ-amine−ε-caprolactone) (PPEGMA-SS-P(CL-co-ACL)) polymers were synthesized and characterized by 1H NMR, GPC, and FT-IR successfully, and their dual pH/reduction-responsive cross-linked polymeric micelles were prepared for paclitaxel (PTX) delivery by using 2,3-dimethylmaleic anhydride (DMMA) as the cross-linking agent. The PTX loading capacity (LC) and encapsulation efficiency (EE) values of the cross-linked micelles formed by PPEGMA8-SS-P(CL47-co-ACL15) achieved were 23.96% and 71.58%, slightly higher than those of un-cross-linked micelles. Both particle sizes of blank micelles and in vitro drug release of PTX-loaded micelles confirmed that compared with those un-cross-linked micelles, the cross-linked micelles were more stable at pH 7.4 + 0 mM DTT, with a PTX cumulative release of 13% at 120 h, while the PTX cumulative release of the cross-linked micelles at pH 5.0 + 10 mM DTT were close to that of un-cross-linked micelles after 60 h, indicating the successful reversible cross-linking and smooth drug release of the cross-linked micelles. The cytotoxicity assay showed that PPEGMA8-SS-P(CL47-co-ACL15) and its cross-linked micelles had low cell cytotoxicity, and both PTX-loaded micelles revealed a certain inhibitory effect on HepG2 cells. These results revealed that the dual pH/reduction-responsive cross-linked polymeric micelles prepared from PPEGMA8-SS-P(CL47-co-DCL15) were a promising candidate for PTX delivery.
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PubMed
高影响因子
Small
·
2017
·Vol. 13
·期 23
·1700484
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IF 8.643
Ning Zhou,Yiheng Shen,Yu Zhang,Ziqi Xu,Guanhaojie Zheng,Liang Li,Qi Chen,Huanping Zhou
Engineering the chemical composition of organic and inorganic hybrid perovskite materials is one of the most feasible methods to boost the efficiency of perovskite solar cells with improved device stability. Among the diverse hybrid perovskite family of ABX 3 , formamidinium (FA)-based mixed perovskite (e.g., FA 1− x Cs x PbI 3 ) possesses optimum bandgaps, superior optoelectronic property, as well as thermal- and photostability, which is proven to be the most promising candidate for advanced solar cell. Here, FA 0.9 Cs 0.1 PbI 3 (Cl) is implemented as the light-harvesting layer in planar devices, whereas a low temperature, two-step solution deposition method is employed for the first time in this materials system. This paper comprehensively exploits the role of Cs + in the FA 0.9 Cs 0.1 PbI 3 (Cl) perovskite that affects the precursor chemistry, film nucleation and grain growth, and defect property via pre-intercalation of CsI in the inorganic framework. In addition, the resultant FA 0.9 Cs 0.1 PbI 3 (Cl) films are demonstrated to exhibit an improved optoelectronic property with an elevated device power conversion efficiency (PCE) of 18.6%, as well as a stable phase with substantial enhancement in humidity and thermal stability, as compared to that of FAPbI 3 (Cl). The present method is able to be further extended to a more complicated (FA,MA,Cs)PbX 3 material system by delivering a PCE of 19.8%.
研究领域:
材料科学
·
能源技术
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Huiwen Liu,Zhennan Wu,Hang Gao,Jieren Shao,Haoyang Zou,Dong Yao,Yi Liu,Hao Zhang,Bai Yang
CsPbX3 (X = Cl, Br, I) nanocrystals (NCs) are competitive emitting materials for illumination and display because of their outstanding photophysical properties. However, the conventional synthetic approaches suffer from low yields, complex procedures, and toxic chemicals. In this work, we demonstrate a one-step microwave-assisted approach to prepare CsPbX3 NCs. The homogeneous heating and rapid temperature increment of microwave preparation facilitate the growth of CsPbX3 NCs, producing the NCs with high photoluminescence quantum yields up to 90%, narrow emission full-width at half-maximum, and emission color tunable from blue to red. By optimizing the preparation conditions of the microwave-assisted approach, CsPbX3 NCs with cation- and halide anion-controlled emission properties, tunable reaction rate, and enhanced stability are prepared. Light-emitting diode (LED) prototypes are further fabricated by employing the as-prepared CsPbX3 NCs as the color conversion materials on commercially available 365 nm GaN LED chips.
研究领域:
材料科学
·
光学工程
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DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2023
·
IF 2.6
Qing Hao,Huan Zhou,Jing Yu Chang,Jie Li,Yun Zhao
Brine deposited in Chaerhan salt lake belongs to the chloride type and can be simplified into the hexnary system Li+, Na+, K+, Mg2+, Ca2+, Cl––H2O. The known solubility data indicate that significant salting-in effects exist in its subsystems of KCl–LiCl–H2O and KCl–CaCl2–H2O, which inevitably affect the properties and solubility behavior of actual brine. In this work, the solubility behavior study and phase diagram determination are extended to the quaternary system of Li+, K+, and Ca2+∥Cl––H2O. The phase equilibrium data at 298.15 and 273.15 K are reported, and five solid species, including two double salts KCl·CaCl2 and LiCl·CaCl2·5H2O, are found. The salting-in effect is still exhibited in the Li+, K+, and Ca2+∥Cl––H2O system and results in a very high total salt content at invariant points; e.g., they are 59.08 and 46.93% at 298.15 and 273.15 K, respectively.
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高影响因子
危险品化学品经营许可证（带存储）