Journal of Water Process Engineering
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2025
·
IF 6.7
Yilai Zhong,Zengyuan Li,Jianchun Qin,Wenlong Li,Chunlin He,Lifeng Chen,Xiangbiao Yin,Mohammed F. Hamza,Yuezhou Wei,Shunyan Ning
Recycling rare earth elements (REEs) from NdFeB magnets alleviates the growing demand for these resources and contributes to environmental protection. Phosphate groups are known for their high adsorption selectivity for rare and precious metals. In this study, a novel phosphorus-functionalized silicon-based adsorption material (PPA@APTES/SBA-15) was synthesized using poly (ethylene glycol)- block -poly (propylene glycol)- block -poly (ethylene glycol) copolymer (P123) as a template, tetraethyl orthosilicate (TEOS) as a silicon source, (3-amino-propyl) trimethoxysilane (APTES) as a coupling agent, and phosphite ester as a functional ligand. This material was designed for the adsorption and separation of Nd and Dy from NdFeB leaching simulants. The batch experiments revealed that PPA@APTES/SBA-15 achieved equilibrium separation of Co and REEs within 10 s, with SF REE/Co ≥ 2018.76. The material exhibited near 100 % adsorption efficiency for Nd and Dy in 6 M HCl solution, along with excellent reusability. Notably, column experiments also demonstrated near complete adsorption efficiency for Nd and Dy. SEM-EDS, TEM, XRD, and N 2 adsorption-desorption isotherms confirmed that PPA@APTES/SBA-15 possessed a uniform hexagonal mesoporous structure and a high specific surface area. TG-DSC analysis demonstrated that the organic loading of PPA@APTES/SBA-15 was 9 %. FT-IR, XPS, and DFT analysis suggested that PPA@APTES/SBA-15 bond metal ions via P OH (P O) groups.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF RARE EARTHS
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2025
·
IF 7.2
Zhonghao Zhang,Xinsheng Li,Sirun Qin,Xiwen Liao,Xiangxi Huang,Duoqiang Liang
A novel method for selective adsorption of zirconium (Zr) from scandium (Sc) in HNO 3 solution was proposed by DPO/SBA-15-N adsorbent which was prepared with SBA-15 and diphosphoryl (DPO) groups through silane coupling method. The results of scanning electron microscopy-energy dispersive spectrometer (SEM-EDS), Brunauer-Emmet-Teller (BET), thermogravimetry (TG) analysis and digestion analysis indicate that DPO/SBA-15-N is an ordered mesoporous adsorbent with a large specific surface area (157.363 m 2 /g) and high functional group content (1.16 mmol/g). In adsorption experiments, DPO/SBA-15-N exhibits high adsorption capacity ( Q = 130.23 mg/g), high separation factor (SF Zr/Sc = 6402) and high adsorption speed (reaching equilibrium within 10 min) for Zr(Ⅳ) in 6 mol/L HNO 3 medium, and the adsorption is better consistent with pseudo-second-order model and Langmuir model. According to the analysis of Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) results, the P‒O and P=O groups in diphosphoryl (DPO) groups play an important role in the selective adsorption process. In conclusion, the adsorbent prepared in this work has great potential for the selective adsorption of Zr(Ⅳ) from Sc(Ⅲ).
研究领域:
材料科学
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化学工程
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DOI
高影响因子
HYDROMETALLURGY
·
2016
·
IF 2.29
Zhang Peng,Dong Linfei,Zhang Dongxiang,Lei Shi,Hongmei Yang,Jinying Li,Wang Yaling,V.V. Tarasov
Calix[4]arene derivatives including diethyl phosphite groups were used for the first time for separating Nd(III) from nitrate media. Calix[4]arene derivatives were synthesized and characterized by infrared spectroscopy (IR), mass spectroscopy (MS), and 1 H NMR. Four calix[4]arene derivatives, CalixF (①), DCalixF (②), PCalixF (⑤), and POCalixF (⑥), were used in a solvent extraction method. The effects of aqueous acidity, diluent, temperature, shaking time, and Nd(III) concentration were investigated. The results showed that the extraction ability of ⑤ and ⑥ with a phosphate functional group at the upper rim were best for the extraction of Nd(III). Derivative ⑥ had better complexing capacities than ⑤ for the generation of a phenolic hydroxyl group at the lower rim. The enthalpy (∆ H O ), Gibbs free energy (∆ G O ), and entropy (∆ S O ) changes for the extraction were obtained from a thermodynamic study. The results showed that the extraction of Nd(III) from a nitric acid system might be an endothermic reaction since the process was naturally spontaneous and increasing the temperature during extraction was determined to be thermodynamically feasible. The extraction of Nd(III) was governed by a two-stage chemical reaction and diffusion process. In the first stage, the process was controlled by a fast chemical reaction at the liquid-liquid interface. The composition of the Nd(III)-calix[4]arene derivative complex was determined to be [Nd(NO 3 ) 3 ] 2 [L]. The second stage was the diffusion of extracted products towards equilibrium. Calix[4]arene derivative ⑥ was found to be an efficient extractant for the separation of Nd(III) and would be a potential extractant for the disposal of radioactive waste in spent fuel .
研究领域:
化学
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核能科学
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环境科学
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2024
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IF 5.3
Qin Zhang,Zhongsheng Chen,Jiangang Li,Xiancai He,Wei Peng,Chunpei Yan,Guolin Huang
Nuclear energy is considered to be a clean, low-carbon, efficient and sustainable source of energy, which is used in a great variety of fields. However, the generation of a large quantity of wastewater containing uranium has posed a potential threat to our human well-being and ecological environment. Efficient separation of radioactive U(VI) from uranium-bearing wastewater is of great importance for humanity. Herein, a novel adsorbent UiO-66-NH 2 @phos-PDA(abbr. U6N@phos-PDA) was prepared by using phosphate and UiO-66-NH 2 encapsulated by PDA. The effects of various conditions such as solution pH, contact time and U(VI) concentration on the U(VI) adsorption process were explored by batch experiments. The kinetic study revealed that the adsorption equilibrium time of U(VI) by U6N@phos-PDA was 150 min, and the adsorption process adhered to the pseudo-second-order kinetic model, with chemisorption being the dominant mechanism. At 298 K, U6N@phos-PDA was able to adsorb U(VI) up to 423.23 mg/g. The Langmuir isotherm model describes the adsorption behavior, which was dominated by adsorption on the surface monolayer. Thermodynamic analysis indicated that U(VI) adsorption by U6N@phos-PDA is a spontaneous endothermic process. Additionally, U6N@phos-PDA exhibited excellent selectivity for U(VI) adsorption in the presence of other metal ions and can be reused effectively for at least five cycles. The FT-IR and XPS characterization analyses demonstrate that the phosphate and amino functional groups of U6N@phos-PDA are crucial for ion exchange and complexation with U(VI). Therefore, U6N@phos-PDA shows promising potential for the separation of U(VI).
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ANALYST
·
2015
·Vol. 140
·期 23
·8017-8022
·
IF 4.107
Jun Lv,Xiaonan Wang,Yuanyuan Zhang,Defeng Li,Juan Zhang,Lizhou Sun
Based on the adsorption between tetracycline (TC) and phosphate groups, a general colorimetric method is explored in this work by using TC-stabilized gold nanoparticles (TC/AuNPs) and 4-aminophenyl phosphate-functionalized Fe3O4 magnetic nanoparticles (APP/MNPs). Taking protein tyrosine phosphatase 1B (PTP1B) as an example, 4-aminophenyl phosphate (APP) can be hydrolyzed into 4-aminophenol (AP) by PTP1B, resulting in the disappearance of the phosphate group on the outer layer of MNPs and the loss of corresponding adsorptive ability. Upon addition of TC/AuNP solution, TC/AuNPs will remain in the supernatant solution after magnetic separation and a high absorbance value can be observed. So PTP1B activity is related to the concentrations of TC/AuNPs in the supernatant solution. In this work, the enzyme activity can be determined at levels as low as 0.0885 U mL−1 and over a linear detection range as wide as 0.1 U mL−1 to 0.9 U mL−1. Moreover, using the proposed method, the inhibition effect of betulinic acid (BA) and sodium orthovanadate (Na3VO4) on PTP1B activity can be tested with IC50 values of 30 μM and 4 μM, respectively. Therefore, a universal platform for the accurate colorimetric analysis of kinase and phosphatase activities can be established through the adsorption between TC and phosphate groups.
研究领域:
生物化学
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分析化学
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纳米生物学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2017
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IF 3.981
Xiao-Mei He,Xi Chen,Bi-Feng Yuan,Yu-Qi Feng
Grafting copolymerization, especially “grafting from” approach, has attracted a great attention for the preparation of cellulose-based materials with various functionalities. In this study, a novel phosphate group-containing cotton fiber-based material, CF-NH 2 -AZO-p(VPA-x), was successfully synthesized by a “grafting from” radical polymerization approach using vinyl phosphonic acid (VPA) as monomer. The phosphate group content of CF-NH 2 -AZO-p(VPA-x) could be easily regulated by adjusting the concentration of VPA monomer. Subsequently, titanium ions immobilized CF-NH 2 -AZO-p(VPA-x) (CF-NH 2 -AZO-p(VPA-x)-Ti 4+ ) was prepared and used as an immobilized metal affinity chromatography (IMAC) adsorbent for the selective enrichment of phosphopeptides from various biological samples. The relationship between enrichment efficiency and phosphate group content of CF-NH 2 -AZO-p(VPA-x)-Ti 4+ was investigated. The optimized CF-NH 2 -AZO-p(VPA-2)-Ti 4+ (x = 2) exhibited high selectivity and extraction capacity in phosphopeptides enrichment from standard peptides mixture, non-fat milk digests and protein-rich human serum. In addition, CF-NH 2 -AZO-p(VPA-2)-Ti 4+ was further applied for the specific capture of phosphopeptides from tryptic digests of rat brain lysate, and 3241 unique phosphopeptides were identified from 0.5 mg of rat brain by combining CF-NH 2 -AZO-p(VPA-2)-Ti 4+ pretreatment with liquid chromatography–tandem mass spectrometry (LC–MS/MS) analysis. We expect the proposed method can promote the development of “grafting from” approach in the preparation of cellulose-based adsorbents and broaden the application of cellulose-based adsorbents for biological analysis.
研究领域:
生物化学
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材料科学
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Hong Li,Diyun Chen,Weixing Han,Jun He,Gang Song,Lingjun Kong,Minhua Su
Wastewater from uranium mining activities is highly acidic and contains uranium, thereby posing severe risks to the ecological environment and human health. Accordingly, uranium purification is extremely crucial. Herein, we delicately designed a novel adsorbent of diethylenetriaminepenta(methylenephosphonic) acid (DTPMP) and meso -SiO 2 modified γ-Fe 2 O 3 (γ-Fe 2 O 3 @SiO 2 @DTPMP, denoted as FSD), and found that the adsorbent can remarkably boost the removal performance of U(VI) under highly acidic conditions. The removal efficiencies of U(VI) by FSD are 90.26 % and 99.81 % in strong acidic solutions of pH = 1.0 and pH = 2.0, respectively, which are much higher than most of the reported adsorbents. Importantly, FSD exhibits high adsorption capacity (51.45 mg/g) and excellent anti-interference, even the wastewater stream contained a lot of organic substances ( e.g. , fulvic acid), cations ( e.g. , K + , Na + , Mg 2+ , NH 4 + , Zn 2+ , Co 2+ , etc.), radioactive nuclides ( e.g. , Cs + and Sr 2+ ). After five cycles, the adsorption efficiency and desorption efficiency of FSD only reduced by 8.83 % and 9.61 %, respectively, which are mainly attributed to the unique structures and good chemical stability of FSD. The removal of U(VI) by FSD is a heterogeneous adsorption process which is dominated by chemical adsorption, mainly involving surface coordination complexation. Multiwfn wavefunction and VMD programs based on density functional theory (DFT) further analyzed and visualized the interaction sites and relative strengths of reactions. The results of detailed characterization analysis and theoretical calculations confirmed that the highly efficient U(VI) removal by FSD is mainly ascribed to the strong coordination of the phosphate groups and amino nitrogen atoms in DTPMP with UO 2 2+ . Therefore, this study provides a promising strategy for the removal of U(VI) in strongly acidic wastewater.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2023
·
IF 3.3
Wei Tan,Feng Zhang,Kai Yu,Fengyu Qu
Achieving proton-conducting solids with high proton conductivity at subzero temperatures remains a serious challenge. Thus, it is indispensable to develop the composites with high conductivity ranging from subzero to medium temperatures (243–343 K). Graphene oxide (GO) as an alternative matrix can provide the rich oxygen-containing groups. Thus, we prepared a series of proton conductors by covalently linking phosphate units onto the amino-functionalized GO monoliths (denoted NGOM-P), the structures of which are determined by FT-IR, XPS , XRD and Raman characterization techniques. Further, the fast proton transfer in effective acid-base networks in NGOM-P make the monolith achieve high proton conductivity from 2.61 × 10 −2 S cm −1 (243 K) to 0.68 S cm −1 (343 K) under 98% relative humidity (RH).
研究领域:
材料科学
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化学
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DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2020
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IF 6.785
Weiwei Qiu,Feng Gao,Natsumi Yano,Yusuke Kataoka,Makoto Handa,Weiqiang Yang,Hidekazu Tanaka,Qingxiang Wang
Electrochemical aptasensors involved in chemical labeling are often single-use and sensitivity-limited because the probes are commonly single-point labeled and irreversible. In this work, the specific coordination between Zr4+ and phosphate group (−PO43–) was employed to construct a new aptasensor that is highly sensitive and reusable, using Ochratoxin A (OTA) as the test model. The OTA binding aptamer (OBA) was hybridized with the thiolated supporting sequence (TSS) immobilized on the surface of a gold electrode. The UiO-66 with a formula of [Zr6O4(OH)4(BDC)6], one of the class of Zr metal–organic frameworks (MOFs), was then particularly grafted on the terminal of OBA through the specific coordination between Zr4+ and 5′-PO43–, i.e., the Zr–O–P coordination bond. Similarly, as much as the 5′-PO43– and 3′-methylene blue dual-labeled sequences (DLS) were further assembled on UiO-66 due to the large surface area of MOF and rich active sites of Zr4+. Owing to the specific coordination for signal amplification, the developed aptasensor shows greatly enhanced sensitivity. A wide detection range from 0.1 fM to 2.0 μM and an ultralow detection limit of 0.079 fM (S/N = 3) for OTA were obtained. Additionally, the TSS can rehybridize with a new OBA to regenerate the aptasensor but without complicated pretreatments, enabling a aptasensor that is readily reusable for OTA detection. The aptasensor was successfully applied for OTA detection in the red wine samples, demonstrating a promising prospect for food safety monitoring.
研究领域:
生物化学
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食品安全检测
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纳米材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Jianjian Yang,Changsong Xie,Qinglei Guo,Hui Wang,Xing Zhou,Zhelun Li,Zixi Kang,Rongming Wang,Daofeng Sun
Proton exchange membrane fuel cells (PEMFCs) are regarded as one of the most promising clean and highly efficient power generation technologies. However, obtaining proton exchange membranes with superior performance remains a challenge for the development of PEMFCs. In this work, we synthesized a porous polyhydroxyl polymer, known as BTA, and successfully introduced almost equimolar phosphate and sulfonic acid groups (−SO3H and −PO4H2) into its framework through the simple postmodification process, resulting in BTA-P and BTA-S, respectively. The studies showed that the −SO3H group in BTA-S can ionize a large number of available protons, and its ion exchange capacity (IEC) reaches 1.65 mmol g–1, which is twice higher than that of BTA-P. The available protons can greatly enhance the proton transport efficiency, resulting in a 3 orders of magnitude increase in proton conductivity of BTA-S compared to BTA-P, reaching up to 3.97 × 10–1 S cm–1 at 80 °C and 95% relative humidity (RH). When a 5% BTA-S/Nafion composite is prepared as a proton exchange membrane for an H2/O2 fuel cell, the maximum power density reaches 952.6 mW cm–2, which is 61.9% higher than that of the recast Nafion membrane at 80 °C and 100% RH. This study reveals that the available proton density plays the most important role in proton conducting polymers.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 24
·16227
·
IF 6.208
Jizhou Zhao,Peng Lu,Tengteng He,Jing Huang,Shiao Zhang,Yan Liu,Yun Wang,Cheng Meng,Dingzhong Yuan
The development of adsorption materials which can efficiently isolate and enrich uranium is of great scientific significance to sustainable development and environmental protection. In this work, a novel phosphonic acid-functionalized magnetic microsphere adsorbent Fe3O4/P (GMA-MBA)-PO4was developed by functionalized Fe3O4/P (GMA-MBA) prepared by distill-precipitation polymerization with O-phosphoethanolamine. The adsorption process was endothermic, spontaneous and kinetically followed the pseudo second-order model. The maximum uranium adsorption capacity obtained from the Langmuir model was 333.33 mg g−1at 298 K. In addition, the adsorbent also had good acid resistance and superparamagnetic properties, which could be quickly separated by a magnetic field. XPS analysis showed that the adsorption of adsorbent mainly depended on the complexation of phosphonic acid group with uranium. This work offers a promising candidate for the application of magnetic adsorbents in the field of uranium separation and enrichment.Keywords:uranium elimination;magnetic polymer microsphere;phosphonic acid;radioactive water treatment
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
TRIBOLOGY INTERNATIONAL
·
2024
·
IF 6.1
Changxin Dong,Xinhuan Niu,Chao He,Xinjie Li,Zheng Wu,Jiahui Li,Bin Hu,Yunhui Shi,Jiabao Cheng,Xiaodong Luan
For copper (Cu) interconnection chemical mechanical polishing (CMP) process, the Cu film slurry follows the principles of high efficiency, environmentally friendly and low cost. In this study, hydroxyethylene diphosphonic acid (HEDP), amino-trimethylene phosphonic acid (ATMP) and ethylenediamine etramethylenephosphonic acid (EDTMP) were used as green inhibitors to study the effects of organic compounds rich in two, three and four phosphate functional groups on the corrosion inhibition properties of Cu films. The results indicated that the Cu film material removal rate (MRR) of HEDP reaches 5879 A/min and the surface roughness (Sq) is 0.85 nm, superior to the other two inhibitors. Through mechanical action analysis, electrochemical experiment, UV-Visible, X-ray photoelectron spectroscopy (XPS) test analysis and theoretical calculation, it was observed that three inhibitors could not only form stable complexes with Cu, which have the effect of corrosion inhibition, but also play a lubricating role of surfactant, and simplify the composition of slurry, and the inhibition efficiency order of them is HEDP > ATMP > EDTMP.
研究领域:
材料科学
·
电化学
·
理论计算
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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）