JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2025
·
IF 2.1
Ruxue Yao,Yang Ge,Jiangtao Song,Fei Yuan,Yafei Guo,Tianlong Deng
The Qaidam Basin has potassium- and calcium-rich oil field brine resources at high temperatures. Since the phase diagram is a powerful tool to guide the separation and purification of inorganic chemical engineering for the development of potassium resources in oil field brine, the quaternary oil field brine system (Na+, K+, Ca2+//Cl– -H2O) and its two subsystems ((Na+, Ca2+//Cl– -H2O) and (K+, Ca2+, //Cl– -H2O)) at 338.15 K were reported for the first time by the isothermal dissolution equilibrium method. The compositions of the equilibrium solid phases were analyzed and identified by combined chemical analyzing and X-ray diffraction. The quaternary system has four crystallized regions corresponding to NaCl, KCl, KCl·CaCl2, and CaCl2·2H2O at 338.15 K, and the incongruent double salt KCl·CaCl2 occurred at 338.15 K. The study facilitates the enrichment of thermodynamic data and exploits brine-based potassium resources.
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·
IF 6.1
Feng Xu,Xiang Xu,Bingxuan Li,Ge Zhang,Chan Zheng,Jindong Chen,Ning Ye
Long-wave infrared (IR) nonlinear optical (NLO) crystals hold great promise for extensive applications. However, IR NLO crystals with outstanding comprehensive optical and NLO performances are still in great demand. Herein, two Hg-based chalcogenides, Hg3AsS4Cl and Hg3AsS4Br, are synthesized via a chemical vapor transport technique. Attributed to the synergistic combination of [HgS3] groups and structurally aligned [AsS3] groups with lone pair electrons, the two compounds exhibit superior NLO performance, encompassing strong second-harmonic generation (SHG) effects, tremendous birefringence, and a broad transparency range, positioning them as promising long-wave IR NLO materials. Moreover, the luminescent performances of the two compounds are also investigated, revealing interesting ultraviolet (UV) region luminescence emissions, broad emission bands, and large Stokes shifts for potential luminescent applications.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 36
·2307
·
IF 2.8
Zhang Huayushuo,Ma Qian,Gao Pan,Li Bolong,Yang Xiaoxia,Li Chao,Song Mingming,Hou Zhiwei,Jiang Xiaomei
X-ray detection has extensive applications in medical imaging, scientific research, and security inspection. Despite the superior radiation detection properties of lead-based perovskites, including high carrier mobility and superior attenuation efficiency, their toxicity and instability arising from ion migration hinders further development. To address these challenges, a series of halogen-tuned lead-free 3-methylpiperidine bismuth halides, (C 6 H 14 N) 3 Bi 2 I 9 , (C 6 H 14 N) 2 BiBr 5 and (C 6 H 14 N) 2 BiCl 5 (C 6 H 14 N = 3-methylpiperidine) single crystals were grown and systematically characterized. 3-methylpiperidine was selected for its steric effect stabilizing the lattice, and the synergistic tuning through halogen variation enabled a structural transition along with modulation of their properties. Notably, the lateral-structured (C 6 H 14 N) 3 Bi 2 I 9 single-crystal X-ray detector exhibits a sensitivity of 388.05 μC Gy −1 cm −2 , a low detection limit of 71.05 nGy s −1 , and a small dark current drift of 2.16 × 10 –8 nA cm −1 s −1 V −1 . Importantly, this material retains its original morphology after 8 months of storage in ambient conditions. Furthermore, flexible X-ray devices fabricated via spin-coating (C 6 H 14 N) 3 Bi 2 I 9 exhibited a favorable X-ray response with a sensitivity of 121.48 μC Gy −1 cm −2 , as well as excellent mechanical stability. This work reveals that halogen tuning effectively optimizes the structure and performance of Bi-based perovskites, providing valuable insights for advancing them in X-ray detection applications.
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CRYSTENGCOMM
·
2023
·Vol. 26
·期 4
·557-565
·
IF 3.1
Jiaqiang Ding,Bingyu Xiao,Jinqiu Wu,Dongliang Chen,Dongling Huang,Zuochun Xiong
Poly(ε-caprolactone-co-trimethylene carbonate) (PCLTMC) is a biodegradable copolymer, which is widely used for medicine and tissue repair systems, and its morphology, degradation and mechanical properties have been extensively investigated. However, its crystallization behavior with different copolymerization ratios has not been studied systematically, which is of great significance for the study of property regulation and an understanding of the crystallization behavior of random copolymers. In this paper, the relationship between the crystallization temperature Tc, melting point temperature Tm and crystallinity Xc of copolymers with different molar ratios was determined by differential scanning calorimetry (DSC) using a non-isothermal crystallization method. The results show that the melting point and crystallinity of the copolymer decrease with an increase in TMC composition. The equilibrium melting point of the copolymers was predicted by an isothermal crystallization method, using the Hoffman–Weeks extrapolation method and crystallization rate growth fitting method both based on Lauritzen–Hoffman theory. It is proved that Lauritzen–Hoffman theory is of great significance for guiding the kinetic behavior of PCLTMC crystallization.
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Waste Disposal & Sustainable Energy
·
2021
·Vol. 3
·期 2
·107-115
·
IF 0
Zhou Junshuang,Wei Kuo,Tian Lina,Hao Zhuoran,Bian Ying,Wang Yuanzhe,Gao Faming
The complicated structured dyes produced by the textile industry have become a serious problem in the last few decades, which can be attributed to their stable chemical structures and difficult to degrade. Therefore, in this article, we described a method to fix dye macromolecules by flocculation process and then transform the colloid to N, S, Cl-doped porous carbon materials. This material can effectively improve the capacity and cycle stability of lithium ion batteries, and recycle the dyes in the water. The N, S, Cl-doped porous carbon materials show a superior electrocatalytic performance of 473.5 mAhg −1 at the current density of 100 mAg −1 after 60 cycles. The present work combines the lithium ion batteries with dyes waste treatment and has a broad prospect for development.
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DOI
LANGMUIR
·
2021
·
IF 3.882
Sai-Nan Guo,Hao Wu,Dan Wang,Jie-Xin Wang
Lead halide perovskite quantum dots (QDs) are known as prospective optoelectronic device materials because of their excellent luminescence, extraordinary photoelectric performance, and specific octahedron framework. Herein, we report a cost-effective approach for synthesizing highly stable CH3NH3PbBr3 QDs in low-polarity binary solvents without nitrogen protection. The CH3NH3PbBr3 QDs are tunable from 1.2 to 4.2 nm by adjusting the proportion of oleic acid and oleylamine as capping ligands. The photoluminescence quantum yield of CH3NH3PbBr3 QDs can reach 87.4%. The fluorescence can maintain over 80% of its earliest emission intensity under the atmosphere after 5 days, which is much better than that (∼10%) of QDs with ligand-assisted reprecipitation. The possible reaction mechanism of preparing CH3NH3PbBr3 QDs was also addressed. Notably, such a strategy can be applied extensively in the preparation of other lead halide perovskite QDs. Furthermore, the as-prepared thick PMMA-coated CH3NH3PbBr3 QDs were further conjoined with a red luminescence powder on a blue InGaN chip to obtain a powerful efficiency (45.4 lm W–1) warm white light-emitting diode.
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高影响因子
LANGMUIR
·
2021
·
IF 3.882
Cong Xie,Yubin Zhao,Wenbin Shi,Ping Yang
The existing defects on the surface of CsPbX3 nanocrystals (NCs) resulted in the decrease of the photoluminescence quantum yields (PLQYs) of NCs. In this study, we developed a simple strategy, which can make the treated CsPbX3 NCs exhibit high PLQYs and better stability by CdX2 post-treatment at room temperature. The treated CsPbX3 NCs were characterized by X-ray diffraction (XRD) patterns and PL spectra. The shape, size, and crystal structure of the NCs remained unchanged after Cd ion treatment. The PLQYs of CsPbCl3 increased from 24 to 73% and the PLQYs of CsPbBr3 NCs increased from 85 to 92% after treatment. The significant enhancement of PLQYs is ascribed to the effective passivation of surface defects, in which Cd2+ and X– ions occupied the Pb–X vacancies existing on the surface of the NCs. In addition, this strategy was also applied to a mixed halide perovskite. The practical application of CsPbX3 NCs will be extended by this method.
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CHEMICAL PHYSICS LETTERS
·
2021
·
IF 2.328
Ziyu Pan,Bin Liu,Bo Wang,Yingchao Liu,Tingyu Si,Wencai Yi,Yangqing Wu,Jinkai Li,Bingqiang Cao
Lead-free double-perovskite Cs 2 SnX 6 (X = Cl, Br, I) containing Sn 4+ is a more stable lead-free photovoltaic material than its homologue CsSnX 3 . However, its stability in air still affects its application. In this Letter, lead-free inorganic Cs 2 SnX 6 (X = Cl, Br, I) nanocrystals (NCs) were synthesized by a hot injection method and in-situ loaded into mesoporous SiO 2 . With the change of halogen content, the PL emission peak of pristine Cs 2 SnX 6 NCs were tuned from 430 nm to 780 nm covering the visible and near infrared spectrum region. Taking Cs 2 SnI 6 /SiO 2 NCs as an example, the optical property stability in solution is obviously improved, and it can be stored in air for over 2 h. Especially, the more stable NIR emission, non-toxicity and easy hydrolysis characteristics of Cs 2 SnX 6 /SiO 2 composite nanoparticles will have potential medical applications like photothermal and photodynamic therapies for cancers.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2018
·Vol. 25
·期 18
·18001-18014
·
IF 2.8
Xu Zhengming,Han Dexia,Li Yuan,Zhang Pingling,You Lijun,Zhao Zhengang
In this study, the FPA90-Cl resin was magnetized with supported Fe 3 O 4 particles using a chemical co-precipitation method and its removal performance of bromate and coexisting precursors was explored. The magnetized FPA90-Cl resin was structurally characterized by SEM, FT-IR, and XRD. The effects of the initial concentrations, temperature, and resin dosage on bromate and bromide ion removal in drinking water were investigated using batch experiments. The magnetized FPA90-Cl resin exhibited a high removal efficiency for bromate and bromide ions at three initial concentrations, and the residual bromate concentrations were under the maximum contaminant level (MCL) of 10 μg L −1 after 80 min. The adsorption data of bromate and bromide ion could be well described by a pseudo-first-order kinetic model ( R 2 ˃ 0.98). The bromate removal alone was further studied by varying the initial solution pH, temperature, and competitive anions. The results showed that the magnetized FPA90-Cl resin could be used over a wide pH range (4.0–9.0). The maximum sorption capacity of the magnetized FPA90-Cl resin for bromate reached 132.83 mg g −1 at 298 K. The Freundlich and Redlich-Peterson isotherm models fit the bromate adsorption equilibrium better ( R 2 ˃ 0.99) than the Langmuir isotherm model ( R 2 ˃ 0.98). The thermodynamic analysis showed that the bromate adsorption process was endothermic. The negative ΔG and positive ΔS indicated that the process was spontaneous and that randomness increased after adsorption, respectively. The competition of coexisting anions with bromate was in the order of SO 4 2− > CO 3 2− > Cl − > NO 3 − > HCO 3 − > PO 4 3− . Additionally, the magnetized FPA90-Cl resin could maintain a high bromate and bromide ion adsorption capacity after five cycles of regeneration by a 0.1 M NaCl solution.
Graphical abstract
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PubMed
高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Lin Shi,Junchun Li,Zengce Liu,Ping Chen,Yang Jiang
Rare-earth metal halides have emerged as a compelling class of luminescent materials, offering an environmentally benign alternative to toxic lead-based halides. This work reports the successful synthesis of Cs 3 CeX 6 (X = Cl, Br, I) with tunable emission and excellent photoluminescence quantum yield (PLQY) of Cs 3 CeCl 6 . Through controlled halogen substitution in the Cs 3 CeX 6 (X = Cl, Br, I) system, composition-dependent emission redshift (Cl→Br→I) is observed. Among them, Cs 3 CeCl 6 achieves a photoluminescence quantum yield (PLQY) of 99.89%, significantly surpassing the 92.57% PLQY of Cs 3 CeBr 6 and the 7.53% PLQY of Cs 3 CeI 6 , meanwhile surpassing that of most previously reported lead-free metal halides, highlighting its exceptional potential for efficient luminescent applications. Thermal stability analysis reveals that Cs 3 CeCl 6 maintains remarkable emission efficiency at elevated temperatures, retaining > 85% of its room-temperature luminescence intensity at 438 K, compared to only 60% for Cs 3 CeBr 6 and a mere 10% for Cs 3 CeI 6 . The exceptional thermal robustness originates from their characteristically high activation energies for thermal quenching, which effectively suppress non-radiative relaxation pathways. White light-emitting diodes (LEDs) based on Cs 3 CeI 6 exhibit a remarkable color rendering index (R a ) of 95.1, in contrast to those based on Cs 3 CeCl 6 (R a = 77.6) and Cs 3 CeBr 6 (R a = 79.6); all WLEDs based on Cs 3 CeX 6 (X = Cl, Br, I) demonstrate excellent atmospheric stability. With near-unity PLQY and remarkable thermal stability of Cs 3 CeCl 6 , coupled with the outstanding white LEDs performance of Cs 3 CeI 6 , Cs 3 CeX 6 (X = Cl, Br, I) compounds emerge as promising candidates for next-generation environmentally friendly optoelectronic applications, particularly in advanced display technologies and solid-state lighting systems. This work contributes to the advancement of eco-friendly emitters with both high efficiency and practical utility in next-generation optical technologies.
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Carbon Neutrality
·
2025
·Vol. 4
·期 1
·1-9
·
IF 12.5
Yang Delong,Dai Jinhang,Du Ziting,Cao Qingya,Chen Gang,Qi Ting,Wang Weilu,Li Fukun
Since 3-acetylamino-5-acetylfuran (3A5AF) has been regarded as a promising nitrogen-containing synthon, the conversion of renewable chitin and its monomer N-acetyl-D-glucosamine (NAG) to 3A5AF is of significance. In this paper, we compared the catalytic activity of several Cl-containing compounds and found that LiCl exhibited superior performance. The effects of solvent, catalyst dosage, reaction temperature, and reaction time on the synthesis of 3A5AF were investigated. Under the optimized conditions, about 60% yields of 3A5AF were obtained in N-methyl-2-pyrrolidone (NMP) or dimethylacetamide (DMA) medium. The spent LiCl and DMA could be recycled and reused, without obvious decrease of 3A5AF yield. Moreover, the formed 3A5AF could be purified by a facile procedure. Experiment results and density functional theory (DFT) calculations revealed that homogeneous Cl − was vital for 3A5AF formation. This study provides an example for the effective conversion of chitin biomass to value-added compounds.
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INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Qi Zhang,Minghui Li,Zhuofan Zuo,Tianhang Zhan,Xiaoyan Li,Wei Zhang
Cotton, as one of the world’s most crucial economic crops, suffers from a markedly shortened service life of its fabrics due to microbial degradation. In this study, N-isopropylacrylamide (NIPAM) containing amide bonds was grafted onto cotton fibers via atom transfer radical polymerization (ATRP) to develop a heat-resistant and wash-durable N-halamine functionalized cotton fabric (PN@CF-Cl). The resulting material exhibited rapid and potent antibacterial activity, killing over 85 % of bacteria within 1 min of contact and achieving > 99.9 % inactivation of Staphylococcus aureus and Escherichia coli within 10 min. After 50 washing cycles at 75 °C, the antibacterial activity retention remained above 97 %. Following storage for 30 days, rechlorination restored the active chlorine content to its initial level. Even after 10 consecutive chlorination–reduction cycles, the active chlorine recovery reached 98.9 %. In addition, the fabric demonstrated high hydrophobicity, air permeability, and moisture vapor transmission. Molecular dynamics (MD) simulations further validated the dynamic interconversion between N–Cl and N–H in the material, elucidating the underlying mechanism for its regenerative performance. Functionalized cotton fabrics based on the N–Cl/N–H dynamic cycling mechanism can extend product lifespan and hold significant promise for applications in medical protective equipment and smart home textiles.
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高影响因子
危险品化学品经营许可证（带存储）