INORGANICA CHIMICA ACTA
·
2025
·
IF 3.2
Zhi Shen,Qi-Yang Li,Lin-Xi Qin,Meng-ting Fan,Qiang Zhao
In order to better study the properties of rare earth europium complexes in terms of fluorescence and probes, in this work, 5-(4-carboxyphenoxy)isophthalic acid (H 3 cpipa) and rare metal ion Eu 3+ were used to synthesize metal complex by solvothermal reaction. Then complex [(Eu 2 (cpipa) 2 ·4H 2 O)·8H 2 O] n (1) was synthesized. Data on the structure acquired via an X-ray single-crystal diffractometer indicates that complex 1 is a three-dimensional network structure with a hollow structure. Moreover, solid-state fluorescence tests were carried out on H 3 cpipa and complex 1 . Fluorescence recognition studies were conducted on complex 1 in dispersed systems. The solid-state fluorescence results show that complex 1 has excellent fluorescence properties, with higher fluorescence intensity than the ligand, and it exhibits the bright characteristic red light of europium under fluorescent lamp. Fluorescence recognition studies have shown that complex 1 in dispersed systems serves as a fluorescent probe for both solvent molecule recognition and cation recognition. In solvent molecule systems, complex 1 exhibits good recognition of acetone, while in cation systems, complex 1 shows good selectivity for Fe 3+ ions
研究领域:
无机化学
·
材料科学
·
发光学
·
配位化学
·
分析化学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Shuang Gao,Zhenxing Wang,Yan Chen,Yimu Wang,Qiyuan Fu,Changhao Feng
The efficient and rapid detection of triethylamine (TEA) is crucial in the field of gas sensors. Sensors fabricated using doped ternary metal oxides demonstrate high response, good stability, excellent gas selectivity, and reproducibility. In this study, NiFe 2 O 4 nanofibers doped with different concentrations of Yttrium (Y/Ni = 0 at%, 1.5 at%, 2.5 at%, 3.5 at% and 4.5 at%) were synthesized via electrospinning, and gas sensors fabricated from these materials were systematically analyzed for their gas-sensing performances. The results indicated that the gas-sensing properties of Y-doped NiFe 2 O 4 nanofibers were improved. Gas sensors based on Yttrium-doped NiFe 2 O 4 nanofibers with a Y/Ni ratio of 2.5 % (referred to as 2.5 % Y-NFO) exhibited the best performance, exhibiting a gas response of 39.3 for the detection of triethylamine at a concentration of 100 ppm at 125 °C. This response was about 3.1 times higher than pure NiFe 2 O 4 nanofibers. Additionally, the response time of 2.5 % Y-NFO is only 2 s, which is much faster than other reported TEA sensors. In addition, these gas sensors exhibit excellent repeatability, selectivity, and humidity resistance. Finally, the underlying mechanism responsible for the enhanced gas-sensing properties is comprehensively discussed. This study presents a simple, stable, and effective route for synthesizing Y-NiFe 2 O 4 nanofibers, thereby achieving excellent sensing performance for TEA detection.
研究领域:
材料科学
·
传感器技术
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DOI
高影响因子
Journal of Cleaner Production
·
2024
·
IF 9.7
Linya Yi,Shuyan Chen,Yuancai Chen
Bio-remediation are low-cost and environmentally friendly, but microbial enzymes tend to lose their activity when treated antibiotic contaminants due to its high toxicity. In this study, Bacillus megaterium Y-4 was demonstrated to in situ synthesize Pd 0 @cells, and detoxify oxytetracycline (OTC) through enhancing electron transport chain via Pd 0 -dependent F O F 1 -ATPase (proton pumps). Toxicity analyses showed that increasing Pd 0 loading significantly reduced acute and chronic bio-toxicity as well as ecological risk of OTC effluent, as evidenced by the promoting cellular response to oxidative stress with increasing enzymes GSH-Px and IDH activities (4.24 and 1.20-fold). Electrochemical (I-t, LSV, DPV and EDC) showed that the incorporated bio-Pd 0 mainly promoted FDH/Hase-based short chain (gradually took precedence over CoQ-based long chain), diverting OTC extracellular degradation to markedly detoxify OTC to cell. Inhibition (DCCD and TBA) assays and structural equation modelling indicated that bio-Pd 0 upregulated ATP and NADH synthesis. It also acted as transmembrane F O F 1 -ATPase proton pump, which enabled the backward of protons out of the restriction of PMF , eventually maximizing the energy utilization. This study sheds new insights into the detoxification of antibiotics by bio-nanoparticles through proton transmembrane transfer/redistribution.
研究领域:
微生物学
·
环境科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Yuyu Zhang,Tao Zhang,Wanling Cai,Gary Owens,Zuliang Chen
While microbial technologies, which are considered to be environmentally friendly, have great potential for the recovery of rare earth elements (REEs) from mining wastewater, their applications have been restricted due to a lack of efficient biosorbents. In this study, a strain of Pseudomonas psychrotolerans isolated from yttrium-enriched mine soil was used to recover yttrium (Y(III)) from rare-earth mining wastewater. At an initial Y(III) dose of 50 mg L −1 , the amount of Y(III) adsorbed by P. psychrotolerans reached 99.9 % after 24 h. Various characterization techniques revealed that P. psychrotolerans adsorbed Y(III) mainly through complexation of oxygen-containing functional groups and electrostatic interactions. A high level of adsorption efficiency (>99.9 %) was maintained after five consecutive adsorption/desorption cycles, indicating that P. psychrotolerans was highly reusable. While the efficiency of adsorbing Y(III) by P. psychrotolerans decreased (34.4 %) in actual rare earth mining wastewater, selectivity toward other REEs (≤ 18.4 %) was still observed. Consequently, this study provides a promising green, environmentally friendly and sustainable microbial approach for the selective recovery of REEs from rare earth wastewater.
研究领域:
环境科学
·
微生物学
·
废水处理
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
·
2022
·Vol. 9
·期 10
·2182-2193
·
IF 7.779
Peng Liu,Tian Xia,Suofu Nie,Qiaoxia Guo,Chunming Xu,Baojian Shen
Y zeolite is presently used as an important active component in oil refining catalysts. The efficient synthesis of NaY zeolite still faces many huge challenges. Herein, a novel method for the rapid synthesis of nano-plate-like small crystal-sized NaY zeolite through an artificial-fish-reef-breeding negative crystal strategy is reported. It was discovered that cationic polyacrylamide (CPAM) could act as an artificial fish-reef to breed negative crystals, which promoted NaY zeolite nucleation and accelerated the crystallization of NaY zeolite. The crystallization time of NaY zeolite was shortened by 9 h. The relevant crystallization mechanism was investigated. Nano-plate-like (10–50 nm) small-sized (100–200 nm) NaY zeolite crystals with exceptional thermal stability and a large total volume (0.447 cm3 g−1) were synthesized. After steam treatment, the nano-plate-like small-sized USY-CPAM zeolites possessed reasonable acid sites distribution, endowing them with superior cracking activity for heavy reactant molecules.
研究领域:
材料科学
·
催化化学
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DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2020
·
IF 0.835
PENGHUI CAO,YUHUA YAN,XINLI TIAN,RUIZHUO OUYANG,YUQING MIAO
Oxygen evolution reaction (OER) is of great importance in splitting water. However, the sluggish OER kinetics at the anode severely hinders the H 2 evolution at the cathode which is a crucial procedure for energy storage. Herein, we report the synthesis of a new OER catalyst of Co(OH) x (WO 4 ) y via a one-step hydrothermal method, where the incorporation of WO 4 2 − as a condenser greatly enhanced the electrocatalytic activity of Co(OH) 2 toward OER. Moreover, the introduction of mesoporous carbon (MC) further improves the electrocatalytic performance of Co(OH) x (WO 4 ) y by forming the nanocomposites of Co(OH) x (WO 4 ) y /MC. The synergism between Co(OH) 2 and WO 4 2 − and the synergistic catalytic effect of Co(OH) x (WO 4 ) y and MC majorly contributed to the apparently enhanced electrocatalysis of Co(OH) x (WO 4 ) y /MC toward OER. This work provides an efficient strategy to improve the electrocatalytic activity of Co(OH) 2 by introducing WO 4 2 − and forming nanocomposites between Co(OH) x (WO 4 ) y and MC for low-cost, convenient and highly efficient water oxidation.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2014
·Vol. 16
·期 4
·1-8
·
IF 2.278
Wu Yonghui,Chang Guanxiao,Zhao Yanbao,Zhang Yu
Hierarchical Fe 3 O 4 @Ni
x
SiO
y
microspheres (MSs) are synthesized via a facile hydrothermal method, using Fe 3 O 4 @SiO 2 MSs as template. The prepared Fe 3 O 4 cores present spherical shape and have a mean diameter of 500 nm, and the Ni
x
SiO
y
shell with thickness of 50 nm was composed of a large number of sheets. The Fe 3 O 4 @Ni
x
SiO
y
MSs are easily manipulated by an external magnetic force. By taking advantages of the high affinity of Ni 2+ on the shell surface toward histidine-tagged (His-tagged) proteins, the Fe 3 O 4 @Ni
x
SiO
y
MSs can be applied to enrich and magnetically separate His-tagged proteins directly from the mixture of lysed cells. Research results indicated that the Fe 3 O 4 @Ni
x
SiO
y
MSs presented negligible nonspecific protein adsorption and high protein binding ability. These MSs with a high binding capacity of 14.6 mmol g −1 are much higher than that of commercial microbeads at only 10–12 mg g −1 . Their specificity and affinity toward His-tagged proteins can be remained after four times recycling. The obtained Fe 3 O 4 @Ni
x
SiO
y
MSs are especially suitable for rapid purification of His-tagged proteins.
研究领域:
材料科学
·
生物化学
·
蛋白质工程
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DOI
高影响因子
PEST MANAGEMENT SCIENCE
·
2023
·Vol. 79
·期 7
·2527-2538
·
IF 4.1
Jiamiao Jin,Chengli Mou,Juan Zou,Xin Xie,Chen Wang,Tingwei Shen,Youlin Deng,Benpeng Li,Zhichao Jin,Xiangyang Li,Yonggui Robin Chi
BACKGROUND Potato virus Y (PVY) was first discovered by Smith in 1931 and is currently ranked as the fifth most significant plant virus. It can cause severe damage to plants from the family Solanaceae , which results in billions of dollars of economic loss worldwide every year. To discover new antiviral drugs, a class of multifunctional urazole derivatives bearing a stereogenic C N axis were synthesized with excellent optical purities for antiviral evaluations against PVY. RESULTS The absolute configurations of the axially chiral compounds exhibited obvious distinctions in antiviral bioactivities, with several of these enantio-enriched axially chiral molecules showing excellent anti-PVY activities. In particular, compound ( R )- 9f exhibited remarkable curative activities against PVY with a 50% maximal effective concentration (EC 50 ) of 224.9 μg mL −1 , which was better than that of ningnanmycin (NNM), which had an EC 50 of 234.0 μg mL −1 . And the EC 50 value of the protective activities of compound ( R )- 9f was 462.2 μg mL −1 , which was comparable to that of NNM (442.0 μg mL −1 ). The mechanisms of two enantiomer of the axially chiral compounds 9f were studied by both molecule docking and defensive enzyme activity tests. CONCLUSION Mechanistic studies demonstrated that the axially chiral configurations of the compounds played significant roles in the molecule PVY-CP (PVY Coat Protein) interactions and could enhance the activities of the defense enzymes. The (S)-9f showed only one carbon–hydrogen bond and one π–cation interaction between the chiral molecule and the PVY-CP amino acid sites. In contrast, the (R)-enantiomer of 9f exhibited three hydrogen bonding interactions between the carbonyl groups and the PVY-CP active sites of ARG157 and GLN158. The current study provides significant information on the roles that axial chiralities play in plant protection against viruses, which will facilitate the development of novel green pesticides bearing axial chiralities with excellent optical purities. © 2023 Society of Chemical Industry.
研究领域:
植物病理学
·
有机化学
·
药学
✓ 已验证
DOI
PubMed
高影响因子
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2024
·
IF 2.1
Huanhuan Lu,Yongfeng Zhao,Tong Wang,Qiyu Wang,Chunyan Sun
In this study, a highly selective and sensitive composite fluorescence sensor (Y-CODs @PVDF@PVP) was developed for the quantitative and visual detection of Hg2+ by electrostatic spinning carbon quantum dots (CQDs) with polyvinylidene fluoride (PVDF) and polyethylene pyrrolidone (PVP). The Y-CODs @PVDF@PVP composite fluorescence sensor exhibited strong yellow fluorescence under ultraviolet light (365 nm), demonstrating stable detection capability for mercury (II) in water samples. The morphology, chemical composition, and optical properties of Y-CODs @PVDF@PVP were thoroughly investigated. Different quenching effects were observed in Y-CODs @PVDF@PVP based on varying concentrations of Hg2+, enabling accurate determination of Hg2+. The achieved detection limit was 9.27 nM. Both static quenching and dynamic quenching mechanisms contributed to the observed results. Notably, the method successfully detected Hg2+ in real water samples from Beichuan Lake as well as rice samples, yielding satisfactory outcomes. Furthermore, when combined with software image analysis, quantitative and visual detection of field Hg2+ levels was accomplished using the composite fluorescence sensor. This research provides valuable insights for developing portable sensors aimed at monitoring harmful substances in water.
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DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2018
·
IF 1.712
Jing Zhu,Lisong Fan,Lina Song,Fengqiu Chen,Dangguo Cheng
Developing effective iron-incorporated zeolites and determining their active centers for the direct oxidation of CH 4 to oxygenates have remained challenging topics so far. In this paper, we successfully prepare the highly-dispersed iron supported Y zeolites by a facile solid-state ion-exchange method with ferrocene, which was conducted under water-free conditions followed by a series of calcination . Moreover, extra-framework dinuclear Fe 2 + complexes are identified as so-called active α-iron sites on zeolites. ICP-OES, N 2 adsorption–desorption test, X-ray diffraction, solid-state 27 Al NMR, N 2 O titration, TEM, EPR and 57 Fe Mössbauer spectra were carried out to characterize properties of sample structure, acid sites, as well as the supported iron species. Characterization results indicate that high-temperature treatments have no effect on the typical structure feature of zeolites. Compared with catalysts synthesized by conventional impregnation, the samples prepared by the facile approach possess abundant dinuclear Fe 2 + complexes but no Fe 2 O 3 bulks and show weak acidity. These lead to a higher oxygenate selectivity in CH 4 oxidation to oxygenates. Remarkably, the oxygenate (HCHO and CH 3 OH) selectivity of 6.5% at 375°C can be eventually obtained.
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2022
·
IF 10.723
Hao Li,Min Long,Huiyu Su,Lei Tan,Xiaowen Shi,Yumin Du,Yan Luo,Hongbing Deng
Immunoglobulin Y (IgY) proves advantageous to IgG in prophylaxis and diagnosis. Quantification of IgY is therefore becoming a topic of interest. Here, we demonstrate a piezoelectric biosensor with carboxymethyl chitosan (CMCS) as the immobilization matrix. Gelation and hydrophilic nature of CMCS are favored to form a crosslinked matrix for antibody immobilization, and a comparison was made between carboxymethyl cellulose (CMC) and CMCS to investigate the benefits of such substitution. Calibration from 500 ng/mL to 200 μg/mL was established in buffer with the detection limit (LOD) down to 270 ng/mL, confirming its feasibility. As-prepared biosensor effectively prevents non-specific binding of bovine serum albumin (BSA) and lysozyme . Each real-time assay took 15 min including sensor regeneration, which can be further reduced to 4 min for signal readout only, ready for both repeated measurements after regeneration and disposable devices. Thus, as-prepared biosensor offers a rapid, label-free and cost-effective approach for IgY quantification.
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产品关联
DOI
PubMed
高影响因子
Catalysis Science & Technology
·
2022
·Vol. 12
·期 15
·4837-4850
·
IF 6.177
Haoyi Lin,Jiaxing Zhang,Qingxu Duan,Kaixuan Yang,Weiping Liao,Shixue Qi,Hongying Lü,Zhiguo Zhu
Plentiful heteroatom-containing zeolites as versatile redox catalysts have been successfully post-synthesized via the top-down methodology, where the starting aluminosilicate zeolites are normally expected to be highly dealuminated to maximize the amounts of silanol nests and occasionally to evade the detrimental effect of framework Al ions on the catalytic performance. Herein, our proposed dealumination-controlled strategy for the synthesis of hierarchical Ti–Y zeolite breaks through this concept. Framework-substituted Ti and tri-coordinated Al species were afforded from the interaction of Ti ions with dealumination-derived silanol nests and from the process of acid treatment, respectively. Structure–function relationships revealed that Lewis acid sites were the catalytically active centres of Ti–Y zeolite in oxidative desulfurization with hydrogen peroxide as the oxidant, which came from the cooperative effect of dual active sites containing framework-substituted Ti and tri-coordinated Al species. The amounts of Lewis acid sites demonstrated a volcanic-type trend as the acid-treatment time increases. The reusability, regeneration ability, deactivation mechanism were also systematically investigated in oxidative desulfurization. Thus the Ti–Y zeolite catalyst was also effective for Baeyer–Villiger oxidation of 2-adamantanone. This work discloses the effectiveness of preparing an efficient Ti–Y zeolite catalyst with cooperative dual active sites via a dealumination-controlled strategy, which bears potential application for constructing other heteroatom-containing FAU-type zeolites with Lewis acid property.
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DOI
高影响因子
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