MICROCHIMICA ACTA
·
2012
·Vol. 177
·期 1
·237-243
·
IF 3.033
Fan Yunchang,Zhang Sheli,Yang Fanming,Niu Haibo,Shi Jiajia
We have prepared the hydrophobic amino-functionalized ionic liquid (IL) 1-(2-aminoethyl)-3-butylimidazolium hexafluorophosphate and investigated its extraction behavior for copper(II) ion as a model cation. The IL, due to the presence of an amino group, is capable of complexing Cu(II) in a ratio of 6:1. The parameters affecting the extraction efficiency were optimized. The IL-based liquid–liquid microextraction was successfully applied to the analysis of Cu(II) in an environmental water standard reference material. The results are promising in terms of liquid–liquid microextraction, separation, and preconcentration of Cu(II).
A hydrophobic amino-functionalized ionic liquid (IL) [NH 2 C 2 C 4 im][PF 6 ] was synthesized. The IL exhibits good extractability for copper (II) ion due to the presence of an amino group.
✓ 已验证
产品关联
DOI
高影响因子
CHROMATOGRAPHIA
·
2011
·Vol. 75
·期 1
·71-76
·
IF 1.075
Yang Xiujuan,Feng Jun,Chen Zuanguang,Liao Rifang,Li Xinchun
A novel, rapid and validated capillary electrophoretic method with an improved electromagnetic induction detector has been developed for the determination of ibuprofen, acetaminophen, amantadine hydrochloride, aminopyrine, diclofenac sodium and codeine phosphate in three kinds of analgesic pharmaceutical preparations. Fabrication of the electromagnetic inductor was the same as previously described, but a brand new electric circuit was designed for the detector to lower the background noise and improve the detection sensitivity. Important factors which might influence the response of the detector, including the value of the adjustable inductor and resistor, excitation frequency and voltage, were examined. Electrophoretic parameters affecting separation efficiency, such as variety of buffer, buffer pH, buffer concentration and electroosmotic flow modifier, were also deliberately investigated. Under the optimal conditions, highly linear response was obtained for these six compounds over three orders of magnitude with detection limits ranging from 0.1 to 1.0 μg mL −1 (S/N = 3). The average recovery and RSD were within the range of 97.5–101.5 and 1.1–2.3%, respectively. This simple, convenient, effective and stable method held great promise in quality control of pharmaceutical preparations.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 2
·1-11
·
IF 5.3
Zhang Xiaoyu,Sun Ruimeng,Zheng Haoran,Qi Yanfei
A spherical nucleic acid (SNA, AuNPs-aptamer) into CRISPR/Cas12a system combined with poly T-template copper nanoparticles as fluorescence reporter was fabricated to establish an amplification-free sensitive method for Staphylococcus aureus ( S. aureus ) detection. This method, named PTCas12a, utilizes the concept that the bifunction of SNA recognizes the S. aureus and triggers the Cas12a cleavage activity. Then, the Cas12a enzyme cleaves the Poly T40 to generate a signal change in Poly T-Cu fluorescence, indicating the presence or absence of the target bacteria. The PTCas12a platform demonstrated a detection limit as low as 3.0 CFU/mL (3 N/S) in a wide response range of 1.0 × 10 1 –1.0 × 10 6 CFU/mL for S. aureus detection, which holds significant potential in ensuring food safety and preventing the spread of diseases. Graphical abstract
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 42
·19811-19824
·
IF 3.5
Liu Weinan,Zhang Haiyang,Yuan Hang,Wang Lidong,Li Zhen
Peroxymonosulfate (PMS) is widely used in advanced oxidation processes. Fe(II) is an excellent catalyst for PMS, and organic pollutants in water can be effectively degraded in the Fe(II)/PMS system. However, the pollutant degradation efficiency is limited by the low conversion efficiency of Fe(II). Natural antioxidants exist in the water environment and have strong electron-donating ability. At present, the research on the introduction of natural antioxidants into the advanced oxidation processes to degrade pollutants focuses on a few polyphenols, and the effects of other natural antioxidants on the removal of pollutants are worth studying. In this study, natural antioxidants, proanthocyanidins (PCs), saponins (SPs), and Lycium barbarum polysaccharides (LBPs), were introduced into the Fe(III)/PMS system. The reduction ability of natural antioxidants was used to improve the conversion efficiency of Fe(III) to Fe(II), and PMS was more effectively activated to produce ROS, which promoted the degradation of ofloxacin (OFL). After the introduction of PC in the Fe(III)/PMS system, 80% of OFL was degraded at 20 min, and 90% of OFL was degraded at 120 min after the introduction of SP. The experimental results showed that the degradation of OFL was affected by the amount of antioxidants, PMS and Fe(III), pH value, and coexisting anions. Free radical quenching experiments showed that 1 O 2 , SO 4 − ·, and ·OH play an important role in the degradation of OFL in the Fe(III)/antioxidant/PMS system. This paper proves that the introduction of proanthocyanidins and saponins into the advanced oxidation processes can remove organic pollutants more efficiently. Graphical
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2024
·Vol. 26
·期 9
·1-15
·
IF 2.1
Yin Yanbing,Zhang Xueli,Jiang Bei,Wang Zhou,Feng Yongming,Li Xueying
Developing efficient catalysts for visible light reactions is vital in the field of photocatalysis. This study focuses on the synthesis of novel ternary composites (α-DMACoPc/TiO 2 /MIL-101 (Fe)) by leveraging the excellent adsorption properties of MIL-101 (Fe), the photosensitizing capabilities of phthalocyanine, and the photocatalytic potential of TiO 2 . The nanocomposites’ structural and optical attributes were thoroughly analyzed. X-ray powder diffraction (XRD) was utilized to showcase the crystalline nature of the composites. Furthermore, Fourier transform infrared (FT-IR) studies confirmed the formation of ternary nanocomposites. Optical absorption investigations demonstrated the tuning of the optical band gap from the UV to the visible range. The results indicated that nearly 94% of the organic material was decomposed after 150 min of exposure to simulated sunlight from a xenon lamp. This high efficiency can be attributed to the synergistic interaction among the composites, enhancing light absorption. The composite’s robust stability was evidenced through cyclic tests. Valuable information was provided to advance the design and synthesis of photocatalysts consisting of metal–organic frameworks synergized with semiconductors. Exploring the possibility of mesoporous materials was based on MOFs for photodegradation of organic pollutants. The photocatalytic degradation of organic pollutants by MOFs mesoporous materials was also investigated. The potential of composite materials in the field of dye degradation of industrial waste is confirmed. The good recycling photocatalytic reusability indicates the promising application of this photocatalyst. Graphical Abstract
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2024
·
IF 4.9
Yang Yang,Bi Yujie,Zhao Yang,Cai Changyu,Liang Xinmiao,Ke Yanxiong
In this work, a modified suspension polymerization method was developed to synthesize cellulose derivative hybrid polydivinylbenzene (PDVB) microspheres with particle sizes of 7–12 μm. Cellulose tris(4-methylbenzoate) (CTMB) and cellulose tris(3,5-dimethylphenylcarbamate) (CDMPC) hybrid PDVB were incorporated and well distributed in the microspheres. The chiral recognition ability of the chiral stationary phases (CSP) was evaluated by chiral high-performance liquid chromatography (HPLC) separation of 38 enantiomers with widely varied chemical structures. The influence of pore size and the loading of chiral selectors were investigated. The chiral recognition ability of the columns is comparable to that of the CHIRALCEL ® OD column and CHIRALCEL ® OJ column. For some enantiomers, the chiral selectivity of the prepared columns is even better than CHIRALPAK ® IB column and CHIRALPAK ® IJ column. In addition, the columns showed excellent stability in the basic mobile phase and organic solvents such as tetrahydrofuran (THF) and ethyl acetate (EA). This work enabled the synthesized polysaccharide-based CSPs with good chiral recognition ability and high stability.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-13
·
IF 14.7
Zhang Lei,Chen Lu,Wang Siheng,Wang Shanshan,Wang Dan,Yu Le,Xu Xu,Liu He,Chen Chaoji
Self-powered skin attachable and detachable electronics are under intense development to enable the internet of everything and everyone in new and useful ways. Existing on-demand separation strategies rely on complicated pretreatments and physical properties of the adherends, achieving detachable-on-demand in a facile, rapid, and universal way remains challenging. To overcome this challenge, an ingenious cellulose nanofiber-mediated manifold dynamic synergy strategy is developed to construct a supramolecular hydrogel with both reversible tough adhesion and easy photodetachment. The cellulose nanofiber-reinforced network and the coordination between Fe ions and polymer chains endow the dynamic reconfiguration of supramolecular networks and the adhesion behavior of the hydrogel. This strategy enables the simple and rapid fabrication of strong yet reversible hydrogels with tunable toughness ((Value max -Value min )/Value max of up to 86%), on-demand adhesion energy ((Value max -Value min )/Value max of up to 93%), and stable conductivity up to 12 mS cm −1 . We further extend this strategy to fabricate different cellulose nanofiber/Fe 3+ -based hydrogels from various biomacromolecules and petroleum polymers, and shed light on exploration of fundamental dynamic supramolecular network reconfiguration. Simultaneously, we prepare an adhesive-detachable triboelectric nanogenerator as a human-machine interface for a self-powered wireless monitoring system based on this strategy, which can acquire the real-time, self-powered monitoring, and wireless whole-body movement signal, opening up possibilities for diversifying potential applications in electronic skins and intelligent devices.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Analysis and Testing
·
2024
·
IF 5.5
Wang Ying,Wang Xu,Liu Ziyun,Dong Fangdi,Lin Yuqing
Phosphate plays a critical role in maintaining homeostasis and engaging in cellular metabolism and energy transduction within the human body. Dysregulation of phosphate concentration can lead to various disorders. However, current detection methods face significant challenges, including low sensitivity, narrow linear ranges, and extended response times. To address these issues, we employ a ligand-regulation strategy and adopt a bottom-up approach to synthesize a series of Ce-based metal organic frameworks (MOFs) with different substituents (–NO 2 , –OH, –NH 2 ). These materials demonstrate outstanding performance in phosphate ion detection using the fluorescence analytical method. Notably, they exhibit a broad linear range (0–250 μmol/L), low detection limit (1.8 × 10 –9 mol/L), and rapid response time (4 min). Furthermore, hydroxyl and amino-functionalized Ce-MOFs exhibit successful application in intracellular fluorescence imaging. This capability is significant for detecting phosphate in biological systems and holds promise for contributing to diagnosing and treating diseases.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·
IF 3.5
Qin Kaili,Zhao Yingzhu,Zhang Yuqi,Zhu Huirui,Chang Bingmei,Zhai Xiang,Wang Xiaoyu,Gong Tao,Guo Rui
Nano targeted therapy has been widely used in cancer treatment research by surface modification to increase the delivery of smart nanomedicine to specific target tissues, thereby reducing the toxic side effects of drugs on normal tissues. At present, a number of targeting ligands have been used for surface modification of nanomedicine, such as folic acid (FA) and hyaluronic acid (HA). Methotrexate (MTX), as a folic acid analog, has a strong tumor inhibition effect, which is expected to be used as a novel targeting ligand for tumor targeted therapy. However, the study of MTCATX as a nanomedicine carrier targeting ligand is rarely reported. And cholic acid is expected to be as a targeting ligand to liver cancer cells based on the specific binding effect of cholic acid on hepatocyte surface receptors. In addition, synergistic therapy has shown great potential in the treatment of hepatocellular carcinoma. Herein, a novel multi-targeting nano-drug carrier MGO-TCA-MTX (MTM) was constructed by functionalizing the surface of graphene oxide (GO) with Fe 3 O 4 , methotrexate (MTX) and triformylcholic acid (TCA) for synergistic chemo-phototherapy of hepatocellular carcinoma. The anti-tumor drug doxorubicin (DOX) was loaded onto nano-drug carrier MTM through hydrogen bonding and π–π stacking to form nanocomposite MGO-TCA-MTX@DOX (MTM@DOX) for enhanced chemo-photothermal therapy. The MTM@DOX with multiple tumor-targeting, near-infrared light (NIR) and pH triggered drug release, and high photothermal conversion efficiency exhibited an excellent tumor inhibitory effect on hepatocellular carcinoma in vitro and in vivo.
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-14
·
IF 14.7
Yuan Guanghui,Jin Zihao,Cao Yingchang,Schulz Hans-Martin,Gluyas Jon,Liu Keyu,He Xingliang,Wang Yanzhong
Organic-inorganic interactions regulate the dynamics of hydrocarbons, water, minerals, CO 2 , and H 2 in thermal rocks, yet their initiation remains debated. To address this, we conducted isotope-tagged and in-situ visual thermal experiments. Isotope-tagged studies revealed extensive H/O transfers in hydrous n -C 20 H 42 -H 2 O-feldspar systems. Visual experiments observed water microdroplets forming at 150–165 °C in oil phases near the water-oil interface without surfactants, persisting until complete miscibility above 350 °C. Electron paramagnetic resonance (EPR) detected hydroxyl free radicals concurrent with microdroplet formation. Here we propose a two-fold mechanism: water-derived and n- C 20 H 42 -derived free radicals drive interactions with organic species, while water-derived and mineral-derived ions trigger mineral interactions. These processes, facilitated by microdroplets and bulk water, blur boundaries between organic and inorganic species, enabling extensive interactions and mass transfer. Our findings redefine microscopic interplays between organic and inorganic components, offering insights into diagenetic and hydrous-metamorphic processes, and mass transfer cycles in deep basins and subduction zones.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
He Meng,Li Rui,Cheng Chuanqi,Liu Cuibo,Zhang Bin
The high Faradaic efficiency (FE) of the electrocatalytic deuteration of organics with D 2 O at a large current density is significant for deuterated electrosynthesis. However, the FE and current density are the two ends of a seesaw because of the severe D 2 evolution side reaction at nearly industrial current densities. Herein, we report a combined scenario of a nanotip-enhanced electric field and surfactant-modified interface microenvironment to enable the electrocatalytic deuteration of arylacetonitrile in D 2 O with an 80% FE at −100 mA cm −2 . The increased concentration with low activation energy of arylacetonitrile due to the large electric field along the tips and the accelerated arylacetonitrile transfer and suppressed D 2 evolution by the surfactant-created deuterophobic microenvironment contribute to breaking the trade-off between a high FE and large current density. Furthermore, the application of our strategy in other deuteration reactions with improved Faradaic efficiencies at −100 mA cm −2 rationalizes the design concept.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·
IF 0
Peng Jun,Xiao Qian,Wang Ziwei,Zhou Fang,Yu Junxia,Chi Ruan,Xiao Chunqiao
For the serious situation of heavy metal pollution, the use of cheap, clean, and efficient biochar to immobilize heavy metals is a good treatment method. In this paper, SA@ZIF-8/BC was prepared for the adsorption of Pb 2+ in solution using sodium alginate (SA) and zeolitic imidazolate framework-8 (ZIF-8) modified corn cob biochar. The results showed that the specific surface area of modified biochar was greatly improved, with good adsorption capacity for Pb 2+ , strong anti-interference ability, and good economy. At the optimal adsorption pH of 5, the adsorption model of Pb 2+ by SA@ZIF-8/BC was more consistent with the pseudo-second-order kinetic model and Langmuir isotherm model. This indicates that the adsorption of Pb 2+ by SA@ZIF-8/BC is chemisorption and monolayer adsorption. The maximum adsorption of modified biochar was 300 mg g −1 , which was 2.38 times higher than that of before modified BC (126 mg g −1 ). The shift in binding energy of functional groups before and after adsorption of SA@ZIF-8/BC was studied by XPS, and it was found that hydroxyl and carboxyl groups played an important role in the adsorption of Pb 2+ . It was demonstrated that this novel adsorbent can be effectively used for the treatment of Pb pollution in wastewater.
✓ 已验证
产品关联
DOI
PubMed
危险品化学品经营许可证（带存储）