JOM
·
2016
·Vol. 69
·期 10
·1950-1957
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IF 1.798
Shi Qihua,Zhang Yimin,Liu Tao,Huang Jing,Liu Hong
To improve separation of V(IV) and Al(III) from aluminum-rich sulfuric acid leaching solution of stone coal, the two-stage separation by crystallization and solvent extraction methods have been developed. A co-extraction coefficient ( k ) was put forward to evaluate comprehensively co-extraction extent in different solutions. In the crystallization stage, 68.2% of aluminum can be removed from the solution. In the solvent extraction stage, vanadium was selectively extracted using di-2-ethylhexyl phosphoric acid/tri-n-butyl phosphate from the crystalline mother solution, followed by H 2 SO 4 stripped efficiently. A V 2 O 5 product with purity of 98.39% and only 0.10% Al was obtained after oxidation, precipitation, and calcination. Compared with vanadium extraction from solution without crystallization, the counter-current extraction stage of vanadium can be decreased from 6 to 3 and co-extraction coefficient ( k ) decreased from 2.51 to 0.58 with two-stage separation. It is suggested that the aluminum removal by crystallization can evidently weaken the influence of aluminum co-extraction on vanadium extraction and improve the selectivity of solvent extraction for vanadium.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 29
·13619-13625
·
IF 3.3
Xuequan Jing,Jiaming Liu,Meina Guo,Guoliang Chen,Guoqing Ren,Jiarong Li,Haonan Qin,Zhangwei Yao,Yinhua Wan,Weijie Song,Huifeng Zeng,Feifei Yang,Da Zhao,Kang Hu
It is critical to detect Fe3+ and Al3+ rapidly and accurately due to their high risk to humans and the ecological environment. In this work, a kind of terbium-based metal–organic framework fluorescent probe (Tb-MOF) is facilely fabricated that displays ultra-high selective detection of Fe3+ and Al3+ over various coexisting ions (i.e. Mn2+, Co2+, K+, Ca2+, Na+, Mg2+, Cd2+, Cu2+, Fe2+, Zn2+, Ni2+, Pb2+ and Cr3+). The obtained Tb-MOF exhibits emission at 547 nm and possesses outstanding thermal, fluorescent and chemical stability. The Tb-MOF shows a ratiometric fluorescence signal for Al3+, and the detection limits for Fe3+ and Al3+ are 0.91 and 6.10 μM, respectively. Moreover, the fluorescence intensities and concentrations of Fe3+ and Al3+ have good linear relationships across wide concentration ranges. Furthermore, the quantifications of Fe3+ and Al3+ are achieved in complex tap and river water samples with good recoveries. This study offers a facile and efficient method of developing a fluorescent probe that possesses the ability to quantify Fe3+ and Al3+ in real environmental water samples.
研究领域:
分析化学
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环境科学
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材料科学
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DOI
高影响因子
FOOD AND CHEMICAL TOXICOLOGY
·
2019
·
IF 3.775
Hua Chen,Chunlei Zhu,Feng Chen,Jingjing Xu,Xiuting Jiang,Zeyu Wu,Xiaowei Ding,Gao-Chao Fan,Yizhong Shen,Yingwang Ye
Fluoroquinolone antibiotics (FQs), a new class of pollutants that seriously threaten human health through environmental and food residues, have aroused wide public concern. However, little attention has been paid to the potential toxicity of FQs' metal complex. Here, we firstly explore the proof-of-concept study of FQs' metal complex to bind bovine serum albumin (BSA) using systematical spectroscopic approaches. In detail, we have found that the complex of Al 3+ with gatifloxacin (Al(III)-GFLX complex) can effectively bind to BSA via electrostatic interaction in PBS buffer (pH = 7.4, 1×), resulting in the formation of Al(III)-GFLX-BSA complex. The negative value of Δ G shows that the binding of Al(III)-GFLX complex to BSA is a spontaneous process. Circular dichroism spectra verify that Al(III)-GFLX complex effectively triggers the conformation changes of BSA's secondary structure. It has been proved that the interaction of small molecule with serum albumin has a significant effect on their in vivo biological effects such as absorption, distribution, metabolism, and excretion, and etc. Therefore, the results of this paper may offer a valuable theoretical basis for establishing safety standards of FQs' metal complex to ensure food and environmental health .
研究领域:
环境科学
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毒理学
·
药物化学
·
生物化学
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DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Xiqi Su,Wenwen Sun,Le Wang,Xiao Zhang,Mengxia Liu,Yi Qu,Li-June Ming
Quercetin (Qr) is a common flavonoid widely found in plants with promising pharmacological activities. It is thus worthwhile to design a convenient method for its detection. In this work, a specific Al 3+ -regulated poly(cyclotriphosphazene- co -curcumin) (PC-Al) micro-probe was designed for real-time detection of Qr, therein significant “turn-on” fluorescence was observed after addition of Qr to PC-Al. Under optimal conditions, the probe has a detection limit of 23.2 nM for Qr sensing with good linearity in the range of 0–5 × 10 −5 M. Moreover, real-time applications of the PC-Al probe in red wine, orange juice, and honey samples were validated. Furthermore, assisted by a consumer smartphone sensing platform, the sensor shows an excellent linear response between the red/blue ratio (R/B) of the two color channels in the picture and the concentration of Qr in the range of 1–120 μM, achieving quantitative detection of Qr. The introduction of smartphone system to realize convenient detection of Qr demonstrates good application prospects of this Al 3+ -mediated fluorescence probe.
研究领域:
分析化学
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药理学
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食品科学
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DOI
高影响因子
BIOORGANIC CHEMISTRY
·
2021
·
IF 5.275
Qinxiang Zheng,Feng Ding,Xiaojuan Hu,Jiayao Feng,Jianliang Shen,Xiaojun He
Aluminum (Al), gallium (Ga), indium (In) are three essential elements in group IIIA of the periodic table, which all share similar chemical properties and are also vital in many aspects of bio- and environmental systems. Proper control of their levels is thus necessary as overexposure to them has been linked to onsets of many diseases. Fluorescence based molecular probes have always been the driving horse for detecting vital ions including group IIIA ions. However, only a few such probes have been reported so far and all of them are faced with one or more shortcomings such as not very high sensitivity, incapability to detect multiple ions simultaneously, and poor cell penetration abilities due to emitted fluorescence at shorter wavelengths. To meet those challenges, we herein presented the successful development and application of a novel group IIIA ions fluorescent probe, NBD-hnap , in live RAW264.7 cell and zebrafish models, especially the imaging of ocular tumor cell OCM-1 (human choroid melanoma cells). NBD-hnap was synthesized by a simple conjugation of NBD and hnap molecules under suitable conditions. Subsequent experimental analysis and theoretical calculations confirmed that NBD-hnap forms a 1:1 chelate with each of three selected group IIIA ions. Further evaluation proved that NBD-hnap can realize highly sensitive [LODs of 113, 82 and 150 nM for Al(III), Ga(III), and In(III) respectively in aqueous solutions] and highly selective (over a dozen of interfering cations) through an ESIPT-based fluorescent sensing mechanism with strong far-red emission around 640 nm. Those value merits make NBD-hnap superior to other group IIIA ion probes reported before and NBD-hnap is thus expected to find wider and greater applications in the near future.
研究领域:
分析化学
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生物医学工程
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环境科学
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DOI
PubMed
高影响因子
Nanoscale
·
2012
·Vol. 5
·期 4
·1552-1556
·
IF 5.914
Lihua Zhi,Jian Liu,Yuan Wang,Wei Zhang,Baodui Wang,Zhuguo Xu,Zhengyin Yang,Xing Huo,Guangming Li
Fe3O4 nanoparticles (NPs) decorated with rhodamine 6G Schiff base, which exhibit high selectivity and sensitivity toward Al3+ over other common metal ions in aqueous media under a physiological pH window via a 1 : 1 binding mode, have been synthesized and characterized. The resulting conjugate 1c renders the rhodamine 6G Schiff base unit more water soluble, and the detection limit reaches 0.3 ppb in water. Moreover, 1c can detect Al3+ in a wide pH span (5.0–11.0) and enrich/remove excess Al3+ in water via an external magnetic field, which indicates that it has more potential and further practical applications for biology and toxicology. Furthermore, 1c provides good fluorescent imaging of Al3+ in living cells.
研究领域:
分析化学
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环境科学
·
生物医学工程
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Beibei Liu,Baoyu Gao,Kangying Guo,Jingwen Pan,Qinyan Yue
Safe and effective coagulants are necessary for surface water treatment. The polyaluminum-titanium chloride (PATC) composite coagulant has promise but its application is limited due to the lack of fundamental theoretical research. We prepared a series of novel PATCs and investigated the effects of the interaction between Al (III) and Ti (IV) on the chemical species distribution, physicochemical properties and coagulation efficiencies. The Al-O-Ti bonds observed in the PATC infrared spectra were predicted by density functional theory computation to appear in 4-atom rings in the structure. The differences in Al species distribution of PATC and PAC illustrated that the introduction of Ti retarded the hydrolysis of monomeric Al species (Al a ) and medium polymerized Al species (Al b ) to colloidal Al species (Al c ) at low B levels, but the transformation was promoted at high basicities (B). PATCs exhibited higher charge densities and larger molecular weights than PAC at the same B levels, which contributed to their excellent coagulation efficiencies. PATC with low B values but high Al/Ti molar ratios mainly provided charge neutralization in removal of humic acid kaolin, while the dominant coagulation mechanism converted from charge neutralization to sweeping and bridging effects at high B values or low Al/Ti molar ratios.
研究领域:
环境科学
·
化学工程
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产品关联
DOI
高影响因子
Mineral Processing and Extractive Metallurgy Review
·
2017
·
IF 1.219
Wencui Chai,Yanfang Huang,Guihong Han,Jiongtian Liu,Shuzhen Yang,Yijun Cao
In order to remove aluminum ions in bauxite processing wastewater, two natural clay minerals (bentonite and kaolin) were used as adsorbents. The adsorption behaviors including kinetics and isotherms were studied at much broader pH range, higher temperature, and higher Al(III) concentration by batch experiments. The adsorption mechanisms were investigated by optical microscope, zeta potential testing, and XRD analysis. The results show that Al(III) adsorption is strongly pH dependent and increases clearly with increasing pH. The pseudo-second-order kinetic model can best describe the adsorption process, and the intra-particle diffusion was not the sole rate-controlling step. The Langmuir–Freundlich model can fit best the adsorption equilibrium data, and the maximum capacities of Al(III) adsorbed on bentonite and kaolin reach to 8.52 mg g–1 and 0.58 mg g–1, respectively, at 35°C. Thermodynamic studies display that the adsorption of Al(III) onto clay minerals is non-spontaneous. The adsorption of Al(III) onto bentonite is endothermic and causes an increase in the entropy, while kaolin is exothermic and causes a decrease in the entropy. The interaction mechanisms of Al(III) with bentonite and kaolin involve electrostatic attraction, cation exchange, surface complex, and precipitation. Bentonite as adsorbent has more potential to remove Al(III) than kaolin.
研究领域:
环境科学
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吸附技术
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废水处理
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黏土矿物学
·
化学工程
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Xiaoqing Lv,Zhengtai Ma,Jiaqi Xu,Zhen Wang,Guixian Zhu,Beiju Huang
The paper-based analytical platforms have been applied in biochemical detection and environmental monitoring due to their low cost and easy operation. Despite their advantages, the complexity of fabrication has limited their further application. Here, a simple and innovative approach using parylene C, a material commonly used in semiconductors, is reported to fabricate paper-based chips and construct a point-of-care testing (POCT) platform through smartphones. Parylene C is deposited on the filter paper through a polydimethylsiloxane (PDMS) clamp and forms a hydrophobic barrier. A three-channel paper-based chip was utilized to detect aluminum (Al) ions on a smartphone platform by the chromogenic method. The color change after Al 3+ detection is represented with △E which was photographed and calculated by app on smartphone. The detection limit is 0.05 mg/L and the detection range is from 0.05 mg/L to 10 mg/L which indicates the application potential in the field of biochemical detection. This new paper-based sensing method and smartphone-based portable detection platform are simple, low-cost, fast, and highly sensitive, and provides a potential application for on-site, visual detection of ions and even other substances.
研究领域:
分析化学
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环境科学
·
即时检测
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智能手机应用
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Wenyue Yu,Huan Guo,Ya Liu,Yangyu Zhou,Yue Xiao,Jinrong Bai,Yanping Wu,Kai Zhong,Yina Huang,Hong Gao
High fluoride intake from tea consumption poses significant health risks, necessitating the development of defluorination adsorbents in the food industry. Defluorination from tea is particularly challenging due to the requirements for high adsorption efficiency, preservation of sensory quality, and high recovery rates of the adsorbents. In this study, we introduced an innovative aerogel bead, CMC-Al/HAP, which integrates hydroxyapatite (HAP) into a carboxymethylcellulose (CMC) sphere crosslinked with aluminum chloride through a green and straightforward process. Our results demonstrated that CMC-Al/HAP achieved a remarkable fluoride adsorption capacity of 23.51 ± 0.46 mg/g. Subsequently, we investigated the impact of various adsorption parameters, kinetics, isotherms, coexisting anions, and recycling potential on the adsorption behavior of the beads. The adsorption kinetics followed the pseudo-second-order and dubinin-radushkevich models, while the Langmuir isotherm provided a good fit for the adsorption data. Characterization studies conducted before and after adsorption indicated that the adsorption mechanism mainly involved ion exchange and electrostatic interactions. Notably, CMC-Al/HAP effectively reduced fluoride levels in brick tea infusions without affecting quality such as tea color, catechins, and aroma. These findings underscore the potential of CMC-Al/HAP aerogel beads as a practical defluorination solution, providing valuable insights into alternative methods for defluorination in the tea industry.
研究领域:
食品科学
·
环境科学
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Zhiying Nan,Hui Xu,Yanhua Liu,Yanan Jiao,Wenhao Li,Jianbin Zhang,Dianming Li,Libang Feng
Janus nanosheets have garnered significant attention in nanoscience due to their distinctive asymmetric structures and versatile applications. Traditional synthesis methods are often time-consuming and complex, emphasizing the urgent need for a simplified and environmentally sustainable synthesis method. Herein, a reactive template method was employed to fabricate amphiphilic alkyl-polytannin-Al3+ (alkyl-PTA-Al (III)) Janus nanosheets. This was achieved using self-assembling octadecylamine (ODA) bilayers as reactive templates. Due to the flexibility and multiple reactive groups of polytannins (PTA), alkyl-PTA-Al (III) Janus nanosheets were utilized as trapping agents for capturing polystyrene (PS) nanoplastics first in water, achieving a removal efficiency of 89.07%. By exploiting the singular anisotropic wettability of alkyl-PTA-Al (III) Janus nanosheets, they can self-assemble at oil–water interfaces, reducing interfacial tension and acting as promising solid surface emulsifiers capable of stabilizing emulsions for up to 180 days. Additionally, the surface functionalization of alkyl-PTA-Al (III) Janus nanosheets with Ag nanoparticles through in situ reduction effect of tannins enabled the catalytic reduction of p-nitrophenol at the emulsion interface, achieving a 99.30% conversion within only 8 min. This work presents a straightforward self-assembly method for creating amphiphilic alkyl-polyphenol Janus nanosheets, highlighting their potential environmental applications in nanoplastics capture, interfacial emulsification and catalysis.
研究领域:
环境科学
·
纳米技术
·
材料科学
·
化学工程
·
胶体与界面科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Material Cycles and Waste Management
·
2025
·
IF 3
Lou Wen-bo,Liu Dong-yan,Zhao Da,Wang Yun,Sun Zi-cheng,Zou Yi,Niu Xiao-wei,Cheng Quan-guo,Li Jian-zhong,Liu Hong-hui
The recovery of NCM (LiNi x Co y Mn 1-x-y O 2 , abbreviated as NCM) cathode materials from retired lithium-ion batteries is a research hotspot in resource recycling field. Nevertheless, due to aluminum impurities mixed in raw materials, Li(I) and Al(III) ions are easy to combine to form water-insoluble LiAlO 2 during reduction, affecting Li(I) ions’ water-leaching efficiency. In this study, the LiAlO 2 formation environment is analyzed. Thermodynamic analysis reveals that there is generally less spontaneity in the reaction of Li (I) ions with aluminum monomers compared to Al 2 O 3 , and the introduction of CO 2 can inhibit Li-Al-O substance production. Li-Al binding experiments show that there is almost no direct reaction between Li 2 CO 3 and aluminum monomers, but under Ar atmosphere, Li 2 CO 3 and Al 2 O 3 can easily lead to Li-Al binding, a kinetic analysis considers that binding is controlled by chemical reaction, with an activation energy of 57.78 kJ/mol, and the activation energy increases to 88.028 kJ/mol with CO 2 atmosphere. Under reduced optimization conditions (reduction temperature: 500 °C, time: 6 h, and m NCM : m Al = 1: 0.25), the carbonation water-leaching efficiency can reach 95.1% for Li(I) ions and less than 1% for Ni(II), Co(II), Mn(II), and Al(III) ions. Thus, this work offers a theoretical basis for the industrial Li(I) ions’ recovery from aluminum-containing NCM materials.
研究领域:
资源回收
·
材料科学
·
环境化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）