STAR Protocols
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2023
·
IF 0
Tiantian Feng,Xuran Chen,Shilei Zhao,Meng Cao,Lijuan Feng,Se Shi,Hui Wang,Tao Liu,Yihui Yuan,Ning Wang
Summary Detection of radioactive iodide ions (I – ) is important for protecting human beings from the hazards of radioactive pollution. Herein, we present a protocol for detecting I – using a zirconium(IV)-enhanced strategy. We describe steps for optimizing the I – detection approach, establishing standard curves, and finally applying the approach. The use of zirconium(IV) greatly improves the detection performance and endows this approach with an ultralow detection limit of 0.176 nM together with wide applicability in various aqueous environments. For complete details on the use and execution of this protocol, please refer to Feng et al. (2022). 1
研究领域:
分析化学
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环境科学
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DOI
PubMed
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 45
·68320-68331
·
IF 5.19
Luo Qie,Cui Wenzheng,Wang Huan,Xiao Bo,Chen Lei,Wang Youqun,Zhang Zhibin,Liu Yunhai,Cao Xiaohong
The separation of magnetic adsorbents from aqueous solutions is made simple by using an external magnetic field. Herein, magnetic Zr(IV)-ethylenediamine tetramethylene phosphonic acid (EDTMPA) hybrids (MZrOP- x -T, x , and T were the different quality of Fe 3 O 4 @C and temperature in the synthesis process, respectively). A study was conducted on the uses of MZrOP- x -T in the capture of U(VI). The influences of pH, adsorption period, initial concentration, and temperature were all investigated. Furthermore, the desorption and reusability of the materials were explored. The optimal values of x and T were 0.2 g and 100 °C, respectively. At 298.15 K, the maximum adsorption capacity of MZrOP-0.2-100 was 330.30 mg·g −1 . The current research demonstrates that MZrOP-0.2-100 is a potentially effective material in removing U(VI) from radioactive solution.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2024
·Vol. 41
·期 11
·3075-3093
·
IF 2.9
Ma Xiaoxuan,Chen Lihui,Dovi Evan,Qu Lingbo,Han Runping
A cost-effective adsorbent (AWS@Zr) was synthesized from walnut shell using Zirconium and amino group modification for the uptake of 2,4-dichlorophenoxyacetic acid (2,4-D) and phosphate (PO 4 3− ). Characterization of the adsorbents revealed a significant difference in the physicochemical parameters of pristine and functionalized walnut shell. Langmuir model was observed to predict adsorption of 2,4-D, while Freundlich model best-fitted PO 4 3− adsorption with chemisorption being the principal underlying mechanism. The adsorption phenomena were pH dependent with Langmuir maximum capacity of 227.4 ± 5.4 mg g −1 and 73.9 ± 3.2 mg g −1 for 2,4-D and PO 4 3− , respectively. Kinetic models were also used to analyze the experimental data, and remarkable determined coefficients favor the pseudo-second-order kinetic model for the batch systems. The column experiments were carried out as a function of adsorbates flow rate, initial feed of 2,4-D and PO 4 3− concentration, bed depth. The results indicated both Thomas and Clark models could predict uptake of 2,4-D and phosphate with Thomas maximum capacity as 195.5 ± 1.0 for 2,4-D and 87.4 ± 0.7 mg g −1 for PO 4 3− at optimum flow rate of 10 mL min −1 and bed depth of 6 cm. Moreover, the column isotherm studies revealed that the Langmuir model predicted the adsorption data of PO 4 3− , and 2,4-D, which was consistent with batch adsorption of 2,4-D. The studied pollutants onto AWS@Zr are PO 4 3− > 2,4-D based on the β −1 obtained from the column’s mass transfer analysis. Adsorption–desorption studies revealed the reusability potentials of AWS@Zr. Zr and amino in surface of AWS@Zr play major role during removal of 2,4-D and PO 4 3− . There is potential for AWS@Zr to remove some anionic pollutants from solution.
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
APPLIED ORGANOMETALLIC CHEMISTRY
·
2019
·Vol. 34
·期 3
·e5454
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IF 3.259
Ningbo Li,Yijun Wang,Feijun Liu,Xin Zhao,Xinhua Xu,Quan An,Keming Yun
An air-stable complex of zirconium (IV)-salophen perfluorooctanesulfonate ( 1 ) was successfully synthesized by reacting Zr (salphen)Cl 2 and C 8 F 17 SO 3 Ag. Complex 1 was characterized and studied by different techniques (NMR, IR, HRMS, TG-DSC, conductivity and acidity measurements), and was found to be air-stable, water tolerant, thermally stable and strongly Lewis-acidic. Complex 1 exhibited high catalytic efficiency for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones/thiones via the Biginelli reaction of aldehydes, 1,3-dicarbonyl compounds and urea/thiourea under solvent-free conditions. Furthermore, complex 1 could be reused 5 times with minimal changes in catalytic efficiency. Compared with previously reported methods, the important features of this protocol are the solvent-free conditions, the short reaction times, the wide substrate compatibility, the high efficiency and the good reusability.
研究领域:
化学
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催化科学
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DOI
高影响因子
MICROCHIMICA ACTA
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2019
·Vol. 186
·期 7
·1-10
·
IF 5.479
Yue Yuhua,Jiang Li,Li Zhen,Yuan Jie,Shi Haizhu,Feng Shun
A glassy carbon electrode (GCE) was consecutively modified with amino groups and phosphate groups, and then loaded with Zr(IV) ions. Fourier transform infrared spectrophotometry, field-emission scanning electron microscopy, energy dispersive X-ray spectroscopy and cyclic voltammetry were used to characterize the morphologies and electrochemical properties. The sensor was used to detect p-nitrophenyl-substituted organophosphorus pesticides, with methyl-parathion (MP) as the model analyte. Under optimized conditions, the oxidation current of square wave voltammetry (typically measured at around −0.28 V vs. saturated calomel electrode) increases linearly in the 1.0 to 100 ng mL −1 MP concentration range, and the detection limit is 0.25 ng mL −1 (at a signal to noise ratio of 3). Average recoveries from (spiked) real water samples are 99.9–102.2%, with relative standard deviations of 0.3–2.6% ( n = 3) at three levels. The reliability and accuracy of the method was validated by HPLC.
Zr(IV) modified GCE is prepared via three steps. The electrode shows high specificity and selectivity towards methyl‐parathion. And the linear range is 1.0 ‐ 100.0 ng mL‐ 1 with the detection limit as low as 0.25 ng mL‐ 1 with SWV.
研究领域:
分析化学
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环境科学
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农药检测
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DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2022
·Vol. 10
·期 44
·9258-9265
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IF 7.571
Chenglong Dong,Mengfan Lu,Hailong Fan,Zhaoxia Jin
Developing advanced soft machines and tissue engineering for load-bearing cartilage or tendons requires tough hydrogels. However, the construction of double or triple crosslinked networks for these tough hydrogels, i.e., a strong network crosslinked by covalent bonds and one or two sacrificial networks built by hydrogen bonds or coordinate bonds, generally asks for multiple steps. It remains a challenge to develop hydrogels with a combination of excellent toughness and a high content of water through the time-saving one-pot process. This study demonstrates that this puzzle could be solved through engineering zirconium(IV)–amide coordinate bonds. To be specific, the combination of strong Zr(IV)–O and moderate Zr(IV)–N coordinate bonds in Zr-polyacrylamide (Zr-PAAm) hydrogels has the advantage that they are usually generated through multiple cross-linked networks. Compared to chemical crosslinked PAAm hydrogels, the highly transparent Zr-PAAm hydrogels crosslinked by Zr(NO3)4 displayed a 26-times increase in fracture stress, 4-times in fracture strain, 6-times in elastic modulus, and over 250-times in toughness. Besides, the mechanical properties of Zr-PAAm hydrogels could be altered over a wide range via changing the anion species, showing a dependence on the Hofmeister effect. The co-existence of Zr(IV)–N and Zr(IV)–O has been confirmed through XPS and FTIR characterizations. In particular, the effect of Zr(IV)–N in Zr–PAAm hydrogels has been verified by comparing the property changes of Zr-PAAm hydrogels before and after swelling in water, in which the Zr(IV)–N in the as-prepared hydrogels was replaced by Zr(IV)–O in the swollen gels. With ultra-stretchability and high transparency, the colorless Zr-PAAm hydrogels displayed rich interference colors under stretching, which brought great potential in anti-counterfeiting materials.
研究领域:
材料科学
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生物医学工程
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DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2021
·
IF 4.759
Huikai Shao,Liang Lai,Dongsheng Xu,Jacques Crommen,Qiqin Wang,Zhengjin Jiang
In this study, to selectively enrich N -glycans from complex biological samples, a novel Zr(IV) modified adenosine triphosphate (Zr(IV)-ATP) functionalized monolith was prepared through a facile approach. Well-defined macroporous structure was observed in the ATP functionalized monolith, which allows rapid mass transfer under low backpressure and is beneficial for the enrichment of N-glycans. After being modified with Zr(IV), the resulting Zr(IV)-ATP functionalized monolith could selectively capture N -glycans through the specific interactions between the sulfonate groups of 1-aminopyrene-3,6,8-trisulfonic acid (APTS) labeled N -glycans and Zr(IV). An APTS labeled maltooligosaccharide ladder was used to optimize the enrichment conditions for APTS labeled N -glycans, and capillary electrophoresis (CE) coupled with laser-induced fluorescence (LIF) detector was employed to evaluate the enrichment efficiency. The results show that the APTS labeled maltooligosaccharides could be enriched under the selected conditions and the signal amplify factors of the maltooligosaccharides were between 7.4 and 19.5 with RSDs for reproducibility from 4.0% to 8.3% (n = 3). Finally, the proposed method was successfully used for the enrichment and detection of N -glycans released from Ribonuclease B.
研究领域:
分析化学
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生物化学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2019
·
IF 5.589
Fei Lin,Chao Liu,Xing Wang,Changsong Hu,Shiliang Wu,Rui Xiao
In order to realize the efficient utilization of biorefinery corncob lignin, the promising catalytic oxidation strategy was carried out by using ZrCl 4 and NaOH as the co-catalyst and dioxygen as the oxidant in MeCN/H 2 O. GC/MS, GC-FID, and MALDI-TOF/MS were employed to recognize the produced monomers and oligomers , and GPC was used to monitor the molecular weight changes of lignin fragments. In addition, specific structural evolution of corncob lignin during ZrCl 4 /NaOH-catalyzed oxidation were revealed by quantitative 13 C (Q 13 C) and 2D HSQC NMR techniques. Results showed that the total yields of produced oxidation monomers reached 6.8 wt%, and aromatic aldehydes were the major species, in which vanillin and 4-hydroxybenzaldehyde were the two dominant products. After ZrCl 4 /NaOH-catalyzed oxidation, the weight-average molecular weight of corncob lignin and its products decreased from 2000 Da to 300 Da after oxidation with 16 h. Moreover, Q 13 C NMR analysis showed the decrease percentage of C O aliphatic carbons (including methoxyl carbons), the increase percentage of C C aliphatic and carbonyl carbons, and the relative stable percentage of aromatic carbons with reaction prolonged. These results combined with the further confirmation from HSQC indicated the oxidative cleavage of C O aliphatic linkages and removal of methoxy groups within corncob lignin, as well as the formation of C C aliphatic bonds and carbonyl groups. The work presented a comprehensive insight into the catalytic oxidative depolymerization of biorefinery corncob lignin.
研究领域:
生物化学
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可再生资源利用
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DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2025
·
IF 1.6
Huang Xuanhao,Liu Xingyue,Wang Yiting,Wang Zhuang,Yu Qiao,Zhou Hang,Li Rui,Ding Songdong
As one of the main radiolysis products of tri-isoamyl phosphate (TiAP) in the spent fuel reprocessing process, di-isoamyl phosphate (DiAP) can lead to a significant deterioration of TiAP in extraction performance. In this context, the effect of DiAP on the extraction and stripping behaviors of U(VI), Th(IV), and Zr(IV) for 1.1 mol/L TiAP/ n -dodecane organic phase was investigated for the first time. It has been shown that DiAP can increase the ability of TiAP to extract metal ions and inhibit the stripping, as well as promote the formation of interfacial deposition. Combined with the results of DLS, FT-IR, 31 P NMR, ESI-MS and elemental analysis, the role of DiAP in the formation of interfacial deposition was also elucidated.
研究领域:
化学工程
·
核能科学与工程
·
放射化学
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DOI
高影响因子
RADIOCHIMICA ACTA
·
2021
·Vol. 109
·期 10
·759-771
·
IF 1.44
You-qun Wang,Huan Wang,Yue Feng,Zhi-bin Zhang,Xiao-hong Cao,Yun-hai Liu
In this work, diethylenetriamine pentamethylenephosphonic acid (DTPMP) was ultilized into preparing of Zr(IV) organophosphates hybrids (Zr-DTPMP- x , x was the molar ratio of Zr(IV)/DTPMP in the synthetic process, x = 0.5, 1, 2, and 3) using a hydrothermal method. The physical and chemical properties of Zr-DTPMP- x were characterized by SEM&EDS, FT-IR, XRD, Zeta potential, XPS, TGA and contact angle analysis. Moreover, the adsorptive performances of Zr-DTPMP- x for U(VI) were investigated. The adsorption results showed that the optimum molar ratio of Zr(IV) to phosphine, pH, equilibrium time, and dosage was 0.5, 4.0, 180 min, and 10 mg, respectively. Besides, the adsorption of U(VI) was in accordance with the pseudo-second-order kinetic model and Sips isothermal model. Moreover, the adsorption capacity determined by Sips isothermal model was 181.34 mg g −1 for Zr-DTPMP-0.5. Furthermore, the adsorptive selectivity of Zr-DTPMP-0.5 for U(VI) was superior than the others. Zr-DTPMP-0.5 may be a powerful candidate for diminishing the contamination of U(VI).
研究领域:
化学工程
·
环境科学
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DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Zhong-Mei Xian,Zeng-Ni Xiang,Yu-Wu,Guo-Long Song,Fu-Hui Gao,Jia-Xi Mei,Ling Wu,Mei-Yu Xu,Guang-Ming Liang,Xu Wang,Xing-Long Gou
A novel blue emission of zirconium complex, formulated as [Zr(pydc) 3 ]·[(CH 3 ) 2 NH 2 ] 2 ( 1 ), has been synthesized by using a mixture of zirconium nitrate and 2, 6-pyridinedicarboxylic acid (H 2 pydc). The complex 1 presents a three-dimensional supramolecular network structure due to the intermolecular N H···O, O H···O hydrogen bonds. Additionally, the crystals of 1 exhibit blue luminescence and demonstrate a highly selective and sensitive sensing capability for detection of Co 2+ ions with a K sv value of 1.22 × 10 4 M −1 and limit of detection (LOD) of 1.20 × 10 −5 M. Furthermore, the fluorescence lifetime and quantum yield of the complex 1 is τ = 6.22 μs and Φ = 25.9 %.
研究领域:
材料科学
·
化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Jingjing Wang,Jun Wei
Zr(IV)-crosslinked carboxymethyl cellulose/carboxymethyl chitosan hydrogels were prepared using polyethylene glycol (PEG) as pore-forming agent. The hydrogels exhibited porous structure and the pore size increased with the PEG content. The obtained hydrogels were used as adsorbents for removal of phosphate from aqueous solutions. The hydrogel prepared with most amount of PEG displayed largest adsorption amount of phosphate. This result might be attributed to improvement of surface area and pore volume caused by introduction of PEG, which could boost exposure of adsorption sites in the hydrogel and enhance the diffusion of phosphate into interior of the hydrogel. The phosphate adsorption achieved equilibrium within 400 min and the removal process followed pseudo-second-order kinetic model. The maximum adsorption capacity was reached at pH = 2.0, and the adsorption capacity gradually increased with temperature. In the presence of coexisting anions, SO 4 2− ions exerted much more negative effect on phosphate adsorption than Cl − and NO 3 − ions. The phosphate adsorption mechanism was related to electrostatic interaction, ligand exchange and ion exchange. Moreover, the hydrogel exhibited relatively stable adsorption capacity after six adsorption/desorption cycles. The present study presented a facile method for preparing an excellent hydrogel adsorbent for phosphate removal from aqueous solutions.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）