Surfaces and Interfaces
·
2025
·
IF 6.3
Kai Yang,Junhao Wang,Dian Yu,Pengqiuyue Pu,Hang Li,Zihao Chen,Yangyang Tang,Zhao Fang
As mineral resources are developed and exploited, the proportion of low-grade zinc ore increases. The concentrations of F - exceeding the optimal range may pose a risk to zinc hydrometallurgy . In the present research, Al 2 O 3 -ZnO microspheres (AZO) characterized by a substantial specific surface area were synthesized through a hydrothermal-roasting technique and applied in industrial zinc sulphate fluoride removal. The optimal adsorption conditions for AZO and the underlying adsorption mechanism were investigated. The results indicated that the adsorption at 12 g·L -1 dosage, original pH=5.32 of the solution and 323 K for 75 min, when the fluoride concentration was reduced to below 50 mg·L -1 , the fluoride removal percentage reached 73.32 %, and the adsorption capacity was 8.55 mg·g -1 . Kinetic studies revealed that AZO exhibited surface inhomogeneity, functioning as a heterogeneous adsorbent, with the fluoride adsorption process being predominantly chemical in nature. The isotherm model suggested that the removal process was characterized by homogeneous adsorption of a monomolecular layer, with a theoretical maximum adsorption capacity of AZO estimated at 9.479 mg·g -1 . FT-IR and XPS analyses demonstrated that the defluorination process occurs through ion exchange between F - and -OH, as well as the formation of Zn/Al-F complexes. Consequently, AZO present a novel approach for developing an effective adsorbent for defluorination in industrial ZnSO 4 solutions.
研究领域:
环境化学
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湿法冶金
·
材料科学
·
吸附技术
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废水处理
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Jianyu Li,Wenbo Li,Qiong He,Ruiqing Luo,Chiyang He
Synthesis of moderate–sized uniform spherical covalent organic frameworks (COFs) within 10–50 μm is crucial for their applications in separation fields, while the spherical 2D COFs with such particle sizes has not been reported till now. Herein, a type of moderate–sized spherical 2D COF (TFB–BD COF) with uniform size within 10–50 μm was size–controllably synthesized via an ‘emulsion polymerization–crystallization’ strategy. The obtained TFB–BD COF showed monodisperse full–spherical morphology, good crystal structure and uniform controllable particle sizes. Moreover, another spherical 2D COF (TAPT–PDA COF) with particle size of 15 μm was also synthesized through a similar method for investigating the application potential of the spherical 2D COFs. As an application case, the spherical TAPT–PDA COF was used as the adsorbent for the disperse solid–phase extraction (d–SPE) of bisphenol F (BPF). The adsorbent showed good adsorption selectivity, high adsorption capacity, fast binding kinetics, good reusability (at least four cycles) and high enrichment factor (60 folds). By combining this d–SPE technique with high–performance liquid chromatography, a new analytical method was established for determination of trace BPF in water samples and an orange juice with recoveries of 94.8–101.6% and LOD of 0.56 ng/mL. The synthesis strategy proposed in this work opens a way for size–controllably synthesizing moderate–sized spherical 2D COFs, and the developed analytical method provides a viable path for detecting trace BPF in water samples and beverages.
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Xiang Gao,Jiajia Zhao,Hao Song,Xintong Zhou,Yuehua Deng,Jiali Liu,Yanrui Li
Graphitic carbon nitride (CN), a promising photocatalyst for CO2 reduction, suffers from inefficient light harvesting and sluggish charge separation dynamics, which severely restricts its application. Ionic liquids (ILs) have been used for the assisted preparation of photocatalysts, thus effectively altering their geometric and electronic properties. Herein, the 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim]PF6) IL was introduced as a modifier to successfully construct a P- and F-co-doped porous CN catalyst via simple calcination of the IL and urea without any organic solvents and templates. The optimized catalyst exhibited an enhanced photocatalytic activity for CO2 reduction via gas–solid mode under visible light irradiation, achieving CO and CH4 evolution rates of 39.9 and 2.63 μmol g−1 h−1 (CO selectivity of 94%), which were 7.8 and 4.8 times higher than those of pristine CN, respectively. PFCN also demonstrated excellent reusability and stability. Comprehensive characterization revealed that the strategy of doping of P and F atoms significantly enlarged the surface area, improved CO2 adsorption, broadened visible-light harvesting, and accelerated charge transfer and separation efficiency. This work highlights the potential of ILs as multifunctional agents for designing high-performance doped CN photocatalysts.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Diwen Xiao,Wenyi Dong,Hongjie Wang,Jiahao Cao,Jie Liu,Yanhui Wang,Yang Wu,Fang Ma,Haifeng Yi
Semiconductor wastewater containing pollutants such as fluoride ions (F − ), per- and polyfluoroalkyl substances (PFAS) and heavy metals has become an increasingly severe issue. Coagulation is a conventional technique for treating semiconductor wastewater. However, existing coagulants face challenges in efficiently removing PFAS, along with issues such as high metal residues, poor settleability and low floc strength. Inspired by the insect-trapping mechanism of Drosera , we synthesized two silane-modified metal-based coagulants, with significantly enhanced performance. Among them, the Drosera -inspired zirconium-based coagulant (DZHC) outperformed the Drosera -inspired aluminum-based coagulant (DAHC) in terms of F − and PFAS removal efficiency, metal residue, settleability, floc size, Zeta potential and floc strength. Mechanistic analyses revealed that F − removal by DZHC occurs via ligand exchange between Zr-OH and F − , whereas DAHC requires initial Al F complexation followed by hydrolysis-polymerization to form coprecipitates. Additional mechanisms including electrostatic interactions, hydrogen bonding and polycondensation also contribute to defluoridation. The removal of copper citrate primarily relies on ligand exchange between metal hydroxyl groups and [Cu-citrate] − , assisted by electrostatic attraction from quaternary ammonium groups. Molecular dynamics simulations and density functional theory (DFT) calculations demonstrated that hydrophobic interactions from C18 chains on the coagulants dominate PFAS removal. In summary, this study provides a novel strategy for simplifying semiconductor wastewater treatment.
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DOI
高影响因子
Canadian Journal of Chemistry
·
2020
·Vol. 98
·期 10
·
IF 1.171
Cheng Cao,Xingmei You,Lei Feng,Guanghong Luo,Guoren Yue,Xiangdong Ji
Two new chromogenic sensors 1-(2-hydroxyphenyl)-3-(4-nitrophenyl)thiourea 1 and 1-(3-hydroxypyridin-2-yl)-3-(4-nitrophenyl)thiourea 2 bearing nitrophenyl and thiourea groups were designed and synthesized by one-step procedure and characterized through 1H NMR, 13C NMR, FTIR, and MS. The anion recognition property of the receptors was studied via naked-eye detection, UV–vis, and 1H NMR. Based on the existence of amino gen and hydroxyl moieties in receptors, receptors 1 and 2 exhibit obvious selectivity by the redshift of UV–vis signals, colour changes through naked-eye detection, and binding effects for F–, H2PO4–, and Ac–. Surprisingly, the detection limits of receptor 1 for F– and Ac– were calculated to be 5.45 × 10−7 and 2.11 × 10−7 (mol/L)−1, respectively, which indicated that F– and Ac– can be identified with high sensitivity by receptor 1. Besides, simple “test strips” were developed and were used as sensors for recognition of F–, H2PO4–, or Ac– in DMSO solution. Lastly, the mechanisms of the recognition process were studied through DFT calculation and 1H NMR titration.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2020
·Vol. 46
·期 13
·21560-21568
·
IF 3.83
Mingcai Li,Xuejie Zhang,Yinjian Zheng,Yaliang Xu,Haoran Zhang,Yingliang Liu,Bingfu Lei
The discovery of light converter excited by near-ultraviolet (UV) superior broadband blue-emitting lighting source is a main challenge in plant growth LEDs. In this study, SrLu 2 O 4 :Ce 3+ , Li + , F − blue phosphor has been synthesized via a solid-state reaction. Benefitting from doping of F − ions, SrLu 2 O 4 :Ce 3+ , Li + , F − phosphor (λ ex = 405 nm, λ em = 460 nm) shows a strong broadband (FWHM = 90 nm) blue-emitting with lower critical concentration of Ce 3+ ions and an increasing 6.9% thermal quenching performance (92.1% @ 423 K of the peak intensity at room temperature). Moreover, a blue light converter composed of SrLu 2 O 4 :Ce 3+ , Li + , F − phosphor and glass matrix is obtained based on phosphor-in-glass (PiG) technology, exhibiting excellent thermal stability and outstanding moisture resistance . A red light converter with commercial red phosphor is obtained by the same method. Furthermore, by combining of two light converters with near-UV chip, a proof-of-concept plant growth high power LED is achieved and applied in indoor Italian lettuce growing in comparison with commercial plant lamps.
研究领域:
材料科学
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光学工程
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农业光电子学
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固体发光
·
无机非金属材料
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DOI
高影响因子
DALTON TRANSACTIONS
·
2019
·Vol. 48
·期 15
·4823-4829
·
IF 4.052
Jian Lin,Qi Liu,Zenghui Yue,Kariem Diefenbach,Liwei Cheng,Yuejian Lin,Jian-Qiang Wang
Expanding the family of f-element bearing molybdate iodates via hydrothermal reactions has yielded ten new rare-earth molybdate iodates with two distinct phases, Ln(MoO2)(IO3)4(OH) (LnMoIO-1, Ln = Ce and Pr) and Ln(Mo2O7)(IO3)(H2O)2 (LnMoIO-2, Ln = Gd–Yb, and Y), as well as the first thorium molybdate iodate, ThF(MO4)(IO3) (ThFMoIO). All three structures exhibit three dimensional frameworks and are exclusively built from lanthanide/actinide polyhedra bridged by molybdates and iodates. Furthermore, the coordination versatility of molybdates (octahedral, square pyramidal, and tetrahedral geometries) results in a diversity of structures. The effect of the lanthanide contraction on the compositions and structures is clearly observed, showing the increase in hydration from the early to late lanthanide analogues and the decrease in unit cell dimensions and the average Ln–O bonding distances across the same structure type. Single crystal X-ray diffraction studies reveal that LnMoIO-1 (Ln = Ce and Pr) crystalize in a noncentrosymmetric space group P21 and the second-harmonic generation (SHG) measurement shows a response of 5 × KDP for PrMoIO-1. In addition, CeMoIO-1 crystallizes as orange coloured tablets which are semiconducting in nature with a band gap of 2.41 eV.
研究领域:
无机化学
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材料科学
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固态化学
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光学材料
·
晶体工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Peng Wei,Yanxiang Liu,Yarui Su,Ling Miao,Yangyang Huang,Yi Liu,Yuegang Qiu,Yuyu Li,Xiaoyu Zhang,Yue Xu,Xueping Sun,Chun Fang,Qing Li,Jiantao Han,Yunhui Huang
We are presenting a sol–gel method for building novel nanostructures made of nanosized F-doped Na1–2xTi2(PO4)3–xFx (NTP-Fx, x = 0, 0.02, 0.05, and 0.10) particles embedded in three-dimensional (3D) carbon matrices (NTP-Fx/C). This technique combines advantages of both zero-dimensional materials and 3D-carbon networks. Proper fluorine doping stabilizes the NTP structure and greatly enhances ion/electron transportation, leading to superhigh-rate electrochemical performance and ultralong cycle life. The composite electrode delivers high specific capacities of 121, 115, 112.2, 110.1, 107.7, 103.1, 85.8, and 62.5 mA h g–1 at 0.2, 0.5, 1, 2, 5, 10, 20, and 30 C, respectively. It retains an unbelievable ∼70% capacity after a thousand cycles at a rate as high as 10 C. Electroanalytical results reveal that fluorine doping significantly enhances Na+ diffusion kinetics. Meanwhile, density functional theory calculations demonstrate F-doped NTPs’ own outstanding electrochemical properties, which is due to the enhanced intrinsic ionic/electronic conductivity. The results show that anion doping is an efficient way to make high-performance NTP anodes for sodium-ion batteries.
研究领域:
电化学
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材料科学
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能源存储
·
纳米材料
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固态化学
·
电化学储能
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Jinlong Hu,Qingqing Chen,Qi Xia,Lingzhi Zhang
Heteroatom-doped hollow carbon nanostructures are one of the most promising sulfur hosts for high-performance lithium-sulfur (Li-S) batteries. However, finding a facile and controllable synthesis and enhancing their immobilization effect on polysulfides have been challenging. Herein, we propose a one-step in-situ reaction approach to synthesize N/F dual-doped hollow micro/mesoporous carbon nanospheres (NFHCs) as multifunctional sulfur host, which integrates the physical confinement of hollow porous structure and chemical adsorption/catalytic ability of N/F active sites to realize strong anchoring and accelerated conversion of polysulfides. This sulfur cathode based on NFHCs host with a high sulfur content of 80 wt% enables a superior high-rate capacity of 689 mAh g −1 at 3C, accompanied by outstanding cycle life over 500 cycles at 2C with a capacity decay of only 0.05% per cycle and nearly 100% Coulombic efficiency. This work opens up new horizons to design nanostructured functional hollow carbons for advanced Li-S batteries.
研究领域:
材料科学
·
能源存储
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 13
·期 6
·120116
·
IF 7.2
Wujian Zhang,Yongchao Zhao,Jidong Wang,Kangjun Wang,Hangjia Shen,Zongjian Liu,Wenfeng Han,Ying Li,Aimin Chen,Haodong Tang
The dehydrofluorination of 1,1-difluoroethane (R152a) is a Lewis acid–catalyzed reaction in which both catalytic activity and stability are governed by the coordination and acidity of aluminum sites. In this work, a mechanochemical fluorination strategy was developed to construct a partially fluorinated Al-based catalyst with tunable acid properties. By controlling the fluorine-aluminum ratio during ball milling, the in situ formation of AlF 2 (OH) was achieved, serving as a structural stabilizer and electronic modulator. The coexistence of F-Al-O units and unsaturated Al centers provides medium-strength Lewis acid sites, which favor selective C-F bond activation while suppressing side reactions. Comprehensive characterizations (XRD, XPS, 27 Al NMR, and NH 3 -TPD) confirmed that the defect-related F-Al-O structure maintains structural integrity and balanced acidity during reaction. Consequently, the optimized catalyst exhibits excellent activity, selectivity, and long-term stability in R152a dehydrofluorination.
研究领域:
催化化学
·
材料化学
·
无机化学
·
化学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Li-Qian Cheng,Xinyuan Xie,Kai Chen,Xuxia Hao,Min Jiang,Yanping Tang,Haijiao Xie,Zhaoyin Wen
The pursuit of high-power and prolonged service life lithium ion batteries has driven extensive research into novel anode materials. Titanium niobium oxide (TNO) has arisen as a prospective contender due to its high reaction potential and low strain performance, which effectively avoid side reactions and suppress the formation of lithium dendrite. However, challenges such as poor conductivity and structural instability during high-rate cycling have hindered their practical application. In this study, high-performance V5+ and F– codoping of the TiNb2O7 (V/F-TNO) anode is obtained by a facile solvothermal method and exhibits outstanding electrochemical properties in both liquid- and solid-state batteries. Under the synergistic effect of V5+ and F– doping, impurity bands and additional oxygen vacancies are introduced to enhance the conductivity, while the particle size is reduced, which significantly improves its rate performance. In addition, a more stable crystal structure improves its cycle life. Thereby, the V/F-TNO anode displays a high reversible capacity of 322.8 mAh g–1 at 0.1 C and a superior rate capability of 222.6 mAh g–1 at 20 C. During long-term cycles, the V/F-TNO anode presents an outstanding discharge capacity of 178.5 mAh g–1 after 1500 cycles at 10 C, equivalent to a capacity retention rate of 78.2%. LiFePO4 (LFP)|Li1.3Al0.3Ti1.7(PO4)3 composite polymer electrolyte (LATPCPEs)|V/F-TNO solid-state batteries (SSBs) are assembled and display ideal capacities of 129.3 mAh g–1 at 0.2 C and 83.5 mAh g–1 at 5 C. Moreover, they retain an extraordinary capacity of 101.7 mAh g–1 after 200 cycles at 0.5 C, corresponding to a high-capacity retention ratio of 86%. This study demonstrates that the V/F-TNO anode is a promising candidate for high-power liquid and solid-state batteries.
研究领域:
材料科学
·
电化学
·
储能
·
电池技术
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产品关联
DOI
PubMed
高影响因子
Canadian Journal of Chemistry
·
2025
·
IF 1
Xin Guo,Pai Chen,Rui Wang,Ruijing Sun,Wei Jian,Yang Zhang,Yongsheng Bao,Shuai Wang
Most areas have long been affected by endemic fluorosis, which can lead to fluorosis bone disease and cardiovascular damage. The detection and treatment of fluoridated water has been of great concern. In this work, the sensors SP-1 and SP-2 were synthesized from naphthylamine and pyreneamine with carboxy-modified spiropyran via amidation reaction. The photoisomerization of spiropyran molecules under alternating ultraviolet/visible light irradiation resulted in changes in the conjugation system, which amplifies the combination between F− and the amide bonds of SP-1 and SP-2 molecules, enabling rapid and naked-eye detection of F−. Simultaneously, the impact of two distinct conjugated rings, pyridineamine and naphthaleneamine, on spiropyran detection of F− was investigated. Based on results from the UV spectrum, 1HNMR, and DFT theoretical calculation, it was determined that both sensor SP-1 and SP-2 can detect F− with a binding ratio of 1:1. The detection limits for sensor SP-1 are 0.978 µM for F−, and SP-2 are 0.173 µM for F−. The detection limit of SP-2, with a larger chromophore than SP-1, is lower and exhibits a more pronounced phenomenon. This study holds significant practical implications for rapid anion detection in aqueous environments, visual recognition without the need for specialized equipment, and energy conservation.
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DOI
高影响因子
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