POLYHEDRON
·
2014
·
IF 2.047
Tianzhi Yu,Ruizhi Liang,Yuling Zhao,Yalu Song,Bin Gao,Minghao Li,Luofu Min,Hui Zhang,Duowang Fan
Lanthanide complexes of the form Ln(DBM) 3 (Cz-PBM) (where Ln = Gd(III), Tb(III) and Eu(III); DBM = dibenzoylmethane and Cz-PBM = (4-(9 H -carbazol-9-yl)phenyl)methyl-2-(2′-pyridyl)benzimidazole) have been successfully synthesized and characterized. The crystal structures of the Gd(III) and Tb(III) complexes were determined by single-crystal X-ray analysis. The results reveal that in the complexes the central metal ions assume a square antiprismatic geometry and are octa-coordinated by six oxygen atoms from DBM ligands and two nitrogen atoms from the Cz-PBM ligand. Under excitation with ultraviolet light, the Eu(III) complex exhibited a strong red emission, but the Tb(III) complex did not show the characteristic emissions of the Tb 3+ ion. The results show that the ligands favor energy transfers to the emitting energy level of Eu 3+ .
研究领域:
无机化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
IRANIAN POLYMER JOURNAL
·
2024
·
IF 2.4
Jia Peijie,Duan Jinsheng,Liu Zhaogang,Li Yilin,Du Guifang,Hu Yanhong,Wu Jinxiu
This study delves into the exploration of zinc lanthanum layered double hydroxides (Zn–La-LDHs) and zinc aluminum lanthanum layered double hydroxides (Zn–Al–La-LDHs) as potential thermal stabilizers for poly(vinyl chloride) (PVC). The investigation aims to elucidate the synergistic effects of the above rare-earth (RE) LDHs in combination with dibenzoylmethane (β-diketone), pentaerythritol (PE), and other commonly employed heat stabilizers on PVC’s crucial properties, including thermal stability, plasticization, and mechanical strength. The experimental findings demonstrated notable enhancements in PVC’s thermal stability upon incorporation of RE-LDHs, β-diketone, and PE. This enhancement is attributed to the ability of RE-LDHs to effectively hinder degradation reactions within the PVC matrix, thereby increasing its degradation activation energy and overall stability. Moreover, the integration of RE-LDHs contributes significantly to improving PVC’s plasticization and mechanical properties, rendering it suitable for a diverse range of applications. While both Zn–La-LDHs and Zn–Al–La-LDHs exhibited good thermal stability, Zn–La-LDHs demonstrated slightly inferior performance compared to Zn–Al–La-LDHs. This distinction underscores the importance of considering the specific characteristics of each LDHs compound when formulating PVC stabilizer systems. Furthermore, this study highlights the potential of RE-LDHs as eco-friendly alternatives to traditional PVC stabilizers, offering opportunities to develop sustainable stabilizer formulations that address environmental concerns associated with conventional stabilizers. In conclusion, the synthesis and application of RE-LDHs represent a significant advancement in PVC stabilization technology, providing a viable and environmentally conscious approach to enhancing the performance and longevity of PVC-based materials. Graphical abstract
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE FORUM
·
2021
·
IF 0
Mansurjon Juraev,Xiao Ya Zhou,Xiao Tao Ma,Cheng Fang,Ye Qian Ge,Qiu Feng Ye,Feng Ye
The structure of basic lanthanum orotate (LaOr) were characterized by elemental analysis and infrared spectroscopy. The thermal stability of polyvinyl chloride (PVC) was further studied by Congo red method, oven discoloration method and thermogravimetric analysis. The results showed that LaOr could prolong the oven discoloration time of PVC, and the color was not completely blackened until 120 min. It has a good synergetic effect with dibenzoyl methane (DBM), and the best effect is achieved when LaOr/DBM ratio is 1.8/1.2. The thermal decomposition kinetics experiment showed that adding DBM can effectively improve the activation energy of PVC/LaOr. The stabilization mechanism of PVC was studied by absorbing HCl method and infrared spectroscopy. The results showed that LaOr could not only replace the unstable chlorine atoms on PVC, but also promote the long-term thermal stability of PVC by absorbing HCl.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
JOM
·
2025
·
IF 2.3
Du Jinjing,Wang Dongbo,Ma Jiayi,Zhai Ruitong,Lin Haiyang,Wang Bin,Li Qian,He Xihong,Zuo Heng
This study investigated the extraction performance of the DBM (bibenzoylmethane) + Cyanex 923 system, proposing a novel method for the selective recovery of lithium from lithium sulfate solutions. Density functional theory (DFT) calculations were employed to elucidate the synergistic extraction mechanism. The results demonstrated that the DBM + Cyanex923 synergistic system effectively achieved lithium–sodium separation, with the organic phase composition and equilibrium pH significantly influencing the separation efficiency. Under optimized conditions (organic phase: 0.5 mol/L DBM + 1 mol/L Cyanex923; aqueous phase: 2 g/L Li, 50 g/L Na; pH 12; 25°C; phase ratio O/A = 1:1), a single-stage lithium extraction rate of 92.1% was achieved. For the simulated feed solutions containing 2 g/L Li and 50 g/L Na, a two-stage countercurrent extraction process at O/A = 1:2 yielded more than 99% lithium extraction. Using 0.5 mol/L H 2 SO 4 as the washing solution at O/A = 2:1 through two-stage countercurrent extraction, the sodium concentration in the loaded organic phase was reduced to less than 0.05 g/L, with a washing efficiency exceeding 97.8%. Three-stage countercurrent stripping with 1.5 mol/L H 2 SO 4 at O/A = 3:1 produced stripping solutions containing 17.12 g/L Li and 1.02 g/L Na, resulting in sodium impurity removal rates above 98%.
研究领域:
环境化学
·
湿法冶金
·
资源循环利用
·
分离科学
·
无机化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Hao Yang,Nianke Zheng,Liping Dong,Yongxiao Song,Wenze Li,Xin Zhou,Zhongqi Ren,Zhiyong Zhou
The green and efficient recovery of Li + from spent LiFePO 4 (S-LFP) batteries and subsequent preparation of high-purity lithium products hold significant industrial importance. It can be applied in various fields such as electronic products, energy storage, and healthcare. A green and non-toxic potassium monopersulfate triple salt (PMTS) was used for the first time as a dual-functional reagent serving as both leaching reagent and oxidant, enabling highly in-situ selective leaching of Li + from S-LFP. Furthermore, a novel extraction system employing dibenzoylmethane (DBM) and triisobutyl phosphate (TIBP) was innovatively applied to selectively recover Li + from the leachate, ultimately yielding battery-grade lithium carbonate. Under optimized conditions, the leaching efficiency of Li + reached up to 99.40 % with nearly negligible iron dissolution (0.01 %). The DBM-TIBP system achieved selective extraction of Li + from the leachate with a single-stage extraction efficiency exceeding 94 %. A comprehensive purification process involving washing with NH 4 Cl/LiCl solution, three-stage cross-flow stripping with NH 4 HCO 3 solution, and high-temperature crystallization was implemented. This protocol achieved remarkable impurity removal efficiencies of 99.05 % for K + and 98.10 % for Na + while maintaining complete Li + retention. The stripping efficiency of Li + reached up to 99.36 %, leading to producing battery-grade lithium carbonate with 99.9 % purity. Additionally, potassium sulfate with 98.30 % purity was recovered from the residual leachate via fractional crystallization. This cost-effective and environmentally benign strategy provided a new perspective for industrial-scale green recycling of S-LFP battery cathode materials.
研究领域:
环境工程
·
材料科学
·
化学工程
·
可持续技术
·
冶金学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2021
·
IF 9.028
Yuxuan Liu,Yonghua Wang,Xin Ling,Zhenhua Yan,Donghai Wu,Jianchao Liu,Guanghua Lu
Nanoplastics with small particle sizes and high surface area/volume ratios easily absorb environmental pollutants and affect their bioavailability. In this study, polystyrene nanoplastic beads (PS-NPBs) with a particle size of 100 nm and butyl methoxydibenzoylmethane (BMDBM) sunscreen in personal-care products were chosen as target pollutants to study their developmental toxicity and interactive effects on zebrafish embryos. The exposure period was set from 2 to 12 h postfertilization (hpf). BMDBM and PS-NPBs significantly upregulated genes related to antioxidant enzymes and downregulated the gene expression of aromatase and DNA methyltransferases, but the influenced genes were not exactly the same. The combined exposure reduced the adverse effects on the expression of all genes. With the help of the single-cell RNA sequencing technology, neural mid cells were identified as the target cells of both pollutants, and brain development, head development, and the notch signaling pathway were the functions they commonly altered. The key genes and functions that are specifically affected by BMDBM and/or PS-NPBs were identified. BMDBM mainly affects the differentiation and fate of neurons in the central nervous system through the regulation of her5, her6, her11, lfng, pax2a, and fgfr4. The PS-NPBs regulate the expression of olig2, foxg1a, fzd8b, six3a, rx1, lhx2b, nkx2.1a, and sfrp5 to alter nervous system development, retinal development, and stem cell differentiation. The phenotypic responses of zebrafish larvae at 120 hpf were tested, and significant inhibition of locomotor activity was found, indicating that early effects on the central nervous system would have a sustained impact on the behavior of zebrafish.
研究领域:
毒理学
·
发育生物学
·
分子生物学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Junya Cao,Zhen Meng,Jianfeng Zhang,Qiyu Meng,Meng Wei,Li Wang,Huiyong Wu,Marco Wenzel,Jan J. Weigand,Huizhou Liu,Liangrong Yang
Direct and efficient recovery of lithium from precipitation mother liquor has garnered increasing attention, but challenges remain due to the low concentration of Li+ and high Na+ excess. To address these issues, we proposed a synergistic extraction system using 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (HPMBP) as the extractant and Cyanex 923 as the synergist, which exhibits high selectivity for lithium in industrial mother liquors. In a single-stage extraction, HPMBP-Cyanex 923 achieved 85% Li+ extraction with only 4% Na+ and K+ from a real mother liquor solution containing 1.46 g/L Li+, 67 g/L Na+ and 2.57 g/L K+. The total organic carbon (TOC) test showed that HPMBP-Cyanex 923 exhibited significantly lower dissolution loss (220 mg/L) compared to that of the commonly used benzoyl-1,1,1-trifluoroacetone (HBTA, 432 mg/L), indicating superior hydrophobicity, which is essential for a green extraction process. The results demonstrate that 97% Na+ in the organic phase can be scrubbed prior to Li+ stripping, and much lower acid concentration (0.2 M HCl) is required to strip the lithium due to a lower pKa value of pyrazolone compared to traditional β-diketones. Single-crystal analysis, slope analysis, and DFT calculations revealed the observation of a binuclear structure, [Li2(PMBP)2(TBPO)2], which could serve as a general structural formula for systems involving pyrazolones and an organophosphorus co-ligand with a short alkyl chain. This work presents a novel lithium extraction system that offers enhanced selectivity and hydrophobicity, along with a lower stripping acid requirement compared to traditional β-diketones. These features make it highly promising for future industrial applications.
✓ 已验证
产品关联
DOI
高影响因子
PACKAGING TECHNOLOGY AND SCIENCE
·
2025
·
IF 3.7
Wenna Wang,Peng Zhao,Li Cai,Ting Zhao,Yingying Guo,Kexi Sun,Zuju Shu,Lijun Zhang,Zhongbo Li
Developing simple and reliable sensors for food freshness is a key goal in intelligent packaging. In this study, a ratiometric fluorescent nanofibre film was successfully developed for real-time visual monitoring of shrimp freshness. The film was constructed by embedding an amine-responsive fluorophore, fluorescein isothiocyanate (FITC) and a stable reference fluorophore, Eu (DBM) 3 Bpy, into an electrospun polyvinyl alcohol (PVA) matrix. The sensing principle relies on the pH-driven enhancement of FITC's green emission (530 nm) in the presence of biogenic amines, whereas the Eu-complex provides a constant red reference signal (610 nm). This dual-emission system creates a clear fluorescence colour change from orange to yellow-green as shrimp spoils. The sensor exhibited high selectivity and a rapid response, detecting spoilage within 6 h at 25°C. The maximum colour difference (ΔE) reached 64.78, allowing for unambiguous visual detection. This robust and easy-to-fabricate nanofibre film holds great promise for practical applications in food safety and intelligent packaging technology.
研究领域:
食品科学与技术
·
传感器与检测技术
·
智能包装
·
纳米材料
·
荧光传感
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Zhihao Yan,Haoran Ma,Cheng You,Kangjie Guo,Shafeng Lv,Yeqian Ge,Zhuanyong Zou,Feng Ye,Qiufeng Ye
A new organic zinc heat stabilizer could be applied to polyvinyl chloride (PVC). Glutamic acid zinc complex (Glu-Zn) was synthesized by a simple precipitation method in one step under alkaline conditions using glutamic acid and zinc acetate dihydrate as reaction raw materials. Its chemical element composition of Zn 5 (C 5 H 7 NO 4 ) 2 (OH) 6 ·H 2 O was analyzed by elemental analysis, crucible thermogravimetric method, infrared spectroscopy, and thermogravimetric analysis. The heat stability effect of Glu-Zn in PVC was studied using Congo red and oven aging methods. The best synergistic thermal stabilization effect was achieved when Glu-Zn compounded with calcium stearate (CaSt 2 ) at a ratio of 0.6:2.4. Moreover, the heat stability mechanism of Glu-Zn in PVC was researched through experiments for the absorption of hydrogen chloride and substitution of unstable chlorine, and the results showed that Glu-Zn could substitute the active chlorine atoms in the PVC molecule to avert additional thermal degradation and also eliminate the acidic HCl generated by subsequent degradation. In addition, the commercial auxiliary heat stabilizers such as pentaerythritol (Pe), dibenzoyl methane (DBM), and epoxidized soybean oil (ESBO) were added to Glu-Zn/CaSt 2 to contrast their synergistic effects. The results showed that Pe had the best synergistic effect among the three additives.
研究领域:
高分子化学
·
材料科学
·
聚合物热稳定
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 11.3
Bo Ren,Ying Wang,Xiangrui Wang,Jianguo Liu,Zhuo Hou,Xiaoli Zhao,Chunhui Wang,Fengchang Wu,Wenhong Fan
Micro- and nano-plastics (MNPs) pose a significant environmental threat, with considerable research focused on their impact on aquatic ecosystems. However, long-term tracking and quantification in complex environments remain challenging. To address this, we synthesized core-shell nanoplastics (EU@PS) using Eu chelates as a dual-functional tracer for reliable, long-term quantitative tracking via both mass spectrometry and fluorescence imaging in water, sediment and organisms. EU@PS exhibit high sensitivity, with a detection limit of approximately 0.5 μg/L (2*10 4 particles/mL) in single-particle ICP-MS mode. Critically, the Eu core demonstrated exceptional stability, retaining over 83.1 % of its mass after 28 days of exposure and unaffected by ultraviolet light. In a microcosm experiment, we tracked the partitioning dynamics between water and sediment and bioaccumulation in D. magna. More than 95 % of the particles settled in sediment within 10 days at 1 and 10 mg/L concentrations, with a sedimentation rate constant of 0.20/day. Fluorescence imaging confirmed particle accumulation primarily in the gut of D. magna , reaching a concentration of 4.8 μg/g even at a low exposure concentration of 50 μg/L. This study provides a stable method for tracking the environmental fate of nanoplastics, highlighting the importance of tracer stability in environmental studies.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Ziteng Huang,Yaru Li,Yuyang Hu,Qiankun Xu,Danya Li,Juzhou Zhang,Xianbiao Wang
Friedel–Crafts acylation yields β-diketone polymer superior to Claisen condensation. • The probe exhibits a vivid green-to-blue shift and intensity enhancement with Al 3+ . • Conformation restriction by Al 3+ coordination enables fluorescence change. • Dual-mode sensing enables both visual screening and precise quantification. • Results in wheat food samples show high consistency with standard ICP-MS methods. Aluminum additives in flour-based foods pose safety concerns and require rapid monitoring. This study presents a high-performance β-diketone main-chain polymer fluorescence sensor synthesized via Friedel–Crafts acylation for specific aluminum detection. This preparation method yielded a polymer with superior sponge-like porosity and extended π-conjugation. Upon Al 3+ coordination, the probe exhibits a distinct fluorescence transition from dim green to brilliant deep blue, enabling visual identification. The response follows a positive cooperative logistic model, achieving a limit of detection of 1.78 μmol/L. Mechanistic studies attribute signal enhancement to a synergistic effect, where coordination restricts the conformational relaxation of the polymer backbone to suppress non-radiative decay while simultaneously increasing radiative oscillator strength. Validated in wheat derivatives with a calibration strategy, the method achieved quantitative results consistent with inductively coupled plasma mass spectrometry. This work highlights the value of backbone-integrated recognition sites and conformational restriction for sensing. A β-diketone main-chain polymer fluorescence sensor addresses the challenge of monitoring aluminum in wheat-based foods. The probe exhibits a positive cooperative logistic response to Al 3+ , characterized by a vivid green-to-blue emission shift. By leveraging a coordination-induced restriction of main-chain conformational relaxation mechanism, the sensor achieves excellent selectivity and sensitivity, allowing for both naked-eye inspection and precise instrumental quantification in real samples. Download: Download high-res image (140KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL LUBRICATION AND TRIBOLOGY
·
2025
·
IF 1.8
Hui Zhao,Huilin Fang,Yuefeng Ma,Zhipeng Li,Tianhui Ren
Purpose This study aims to extend the service life and applicability under ultraviolet (UV) irradiation conditions, the authors reveal the strong UV resistance of dibenzoylmethane molybdenum (MDBM) in aluminum-based greases by analyzing the effect of UV radiation on the rheological properties, antioxidant properties and UV absorption. Meanwhile, the authors evaluate the tribological properties of MDBM under different sliding modes and applied loads in aluminum-based greases. Design/methodology/approach In this work, the authors designed and synthesized an S- and P-free MDBM through a simple one-pot method and examined the tribological and UV-resistant performance of MDBM within aluminum complex grease. Findings The results show that MDBM has good friction-reducing and anti-wear properties, which is attributed to the adsorption of the MDBM itself and the generation of minor amount of MoO 3 on the worn surface at a maximum Hertzian contact pressure of 0.6 Gpa. The authors also reveal the strong UV resistance of MDBM in aluminum-based greases by analyzing the effect of UV radiation on the rheological properties, antioxidant properties and UV absorption, which is mainly attributed to self-keto-enol isomer interconversion from the special structure of β-diketone. Originality/value The work demonstrates a feasible way to develop novel multifunctional UV resistance organic molybdenum lubricating materials. Peer review The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-02-2025-0048/
研究领域:
材料科学
·
摩擦学
·
化学工程
✓ 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）