SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Jiaojiao Zhou,Wenjing Wang,Shuojun Li,Axiu Nie,Zhiyong Song,Mohamed F. Foda,Zhicheng Lu,Ling Zhao,Heyou Han
An innovative fluorescent and colorimetric dual-mode strategy based on Y-shaped DNA was proposed for the detection of rabies virus oligonucleotide. The cascade assembly of hairpin probes was initiated by the target, leading to the formation of Y-shaped DNA accompanied by freeing target to catalyze the next assembly process. The fluorescence recovery of the fluorophore FAM was accompanied by opening of hairpin probe. A colorimetric signal was generated by the proximity of glucose oxidase (GOx) and horseradish peroxidase (HRP), which was reflected by enhanced catalytic capability to TMB. Using this method, target DNA can be detected with a wide linear range from 0.1 to 6 nM with a detection limit of 15 pM, and from 0.5 to 60 nM with a detection limit of 60 pM for fluorescent and colorimetric readout, respectively. Moreover, the dual-mode detection strategy exhibited excellent selectivity towards the target compared with interference oligonucleotides. In addition, recoveries ranging from 96.0% to 106% with RSD values varying from 3.2% to 5.4%, and from 91.0% to 102% with RSD values varying from 3.3% to 7.1% for fluorescent and colorimetric studies, respectively, were obtained in diluted cerebrospinal fluid samples. The proposed dual-mode sensor is easy to operate with excellent detection performance. It would be superior to single mode detection and more practicable for quantitative detection of nucleic acid-related biomarkers due to the self-correction capability.
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Hua-Yu Zhang,Jiu-Li Wen,Qi Shao,Ai Yuan,Hai-Ting Ren,Fang-Ying Luo,Xiao-Liang Zhang
La/Y-codoped microporous organosilica membranes were successfully fabricated by sol-gel procedure with 1,2-bis(triethoxysilyl)ethane (BTESE) as silica precursor for efficient desalination. The rare earth elements were confirmed to be doped into silica frameworks during the sol-gel procedure by various characterizations, which would decrease particles size and size distribution of BTESE-derived sols and form hydrothermally stable Si–O–RE (RE for La and Y) bonds. It could significantly influence membrane surface morphology , microstructure properties and hydrophilcity of La/Y-codoped membranes, and then improve their desalination performance. Under the optimized preparation conditions, La 25 Y 75 -SiO 2 (La:Y = 25:75, mol%) membranes exhibited the highest water flux of 10.3 kg m −2 h −1 and NaCl rejection of nearly 100% towards 3.5 wt% NaCl feed solution even at room temperature of 25 °C. It was attributed to strongest hydrophilcity, finest microstructure, and lowest mass resistance of water permeation for La 25 Y 75 -SiO 2 membranes. Moreover, such these organosilica membranes demonstrated good stability for 200 h simulated seawater desalination tests without any significant changes of separation performance and promising hydrothermal durability under various salts solutions with different concentrations at 25–60 °C.
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高影响因子
DYES AND PIGMENTS
·
2018
·
IF 3.767
Yuncheng Zhou,Peng Jiang,Honghong Lei,Yong Li,Wenbin Cao,Jianlei Kuang
BaAl 2-x Mn x O 4+y (0 ≤ x ≤ 0.10) showing intense turquoise to green colors were prepared by the sol-gel method from metal nitrides as precursors and followed by a thermal treatment at 900 °C. The X-ray diffraction of all of the as-synthesized samples are indexed with BaAl 2 O 4 stuffed tridymite structure. The oxidation state of Mn is confirmed to be +5 by X-ray photoelectron spectroscopy analysis. The colors of the samples are tuned to intense turquoise and green with the increase of Mn content . The optical properties are characterized by UV–Vis absorbance spectra and CIE L ∗ a ∗ b ∗ coordinates. The reason for the intense colors is due to the Mn 5+ doping in the [AlO 4 ] tetrahedral sites. The pigments are applied to poly(methyl methacrylate) (PMMA) and the colours of the polymer composite were characterized.
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高影响因子
POLYMER BULLETIN
·
2018
·Vol. 75
·期 11
·4881-4899
·
IF 1.589
Zhang Mengmeng,Chang Liangliang,Zhao Yuanyuan,Yu Zehao
Montmorillonite/polypyrrole (MMT/PPy) nanocomposites were fabricated by in situ polymerization of pyrrole monomer in the presence of MMT. The structures of the nanocomposites were analyzed by X-ray diffraction, Fourier transform infrared spectra, thermogravimetric analysis and transmission electron spectroscopy. Then, the capability of MMT/PPy nanocomposites on the removal of Eosin Y from aqueous solution was systematically studied. The MMT/PPy nanocomposites showed high adsorption capacity toward Eosin Y and a maximum adsorption capacity of 112.9 mg/g at 35 °C was achieved. The adsorption kinetics demonstrated a rapid Eosin Y uptake by MMT/PPy and the experimental data were well fitted to the pseudo-second-order model. Both the Langmuir and Freundlich models were employed to describe the adsorption isotherms, and the results presented that the equilibrium data obeyed the Langmuir model. Thermodynamic parameters of Δ G ° and Δ H ° verified the spontaneous and endothermic nature of the Eosin Y adsorption onto MMT/PPy. Furthermore, the regeneration experiments revealed that MMT/PPy nanocomposites could be reused after treated with hydrochloric acid solution, showing potential applications in purification of dyeing effluents.
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高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xiaolong Li,Jundi Wan,Yulu Tang,Chenyu Wang,Yahui Zhang,Dongjun Lv,Mingyuan Guo,Yongning Ma,Yuhao Yang
Navigating more effective methods to enhance the photon utilization of photodetectors poses a significant challenge. This study initially investigates the impact of morphological alterations in 2H-MoS2 on photodetector (PD) performance. The results reveal that compared to layered MoS2 (MoS2 NLs), MoS2 nanotubes (MoS2 NTs) impart a cavity enhancement effect through multiple light reflections. This structural feature significantly enhances the photodetection performance of the MoS2-based PDs. We further employ the heterojunction strategy to construct Y-TiOPc NPs:MoS2 NTs, utilizing Y-TiOPc NPs (Y-type titanylphthalocyanine) as the vis–NIR photosensitizer and MoS2 NTs as the photon absorption enhancer. This approach not only addresses the weak absorption of MoS2 NTs in the near-infrared region but also enhances carrier generation, separation, and transport efficiency. Additionally, the band bending phenomenon induced by trapped-electrons at the interface between ITO and the photoactive layer significantly enhances the hole tunneling injection capability from the external circuit. By leveraging the synergistic effects of the aforementioned strategies, the PD based on Y-TiOPc NPs:MoS2 NTs (Y:MT-PD) exhibits superior photodetection performance in the wavelength range of 365–940 nm compared to MoS2 NLs-based PD and MoS2 NTs-based PD. Particularly noteworthy are the peak values of key metrics for Y:MT-PD, such as EQE, R, and D* that are 4947.6%, 20588 mA/W, and 1.94 × 1012 Jones, respectively. The multiperiod time-resolved photocurrent response curves of Y:MT-PD also surpass those of the other two PDs, displaying rapid, stable, and reproducible responses across all wavelengths. This study provides valuable insights for the further development of photoactive materials with a high photon utilization efficiency.
研究领域:
材料科学
·
光电子学
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DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2011
·
IF 2.089
Yu-Feng Hu,Xiao-Ming Peng,Shan Ling,Jin-Zhu Zhang,Chuan-Wei Jin
Conductivities were measured for the ternary systems Y(NO3)3 + Ce(NO3)3 + H2O, Y(NO3)3 + Nd(NO3)3 + H2O, and Ce(NO3)3 + Nd(NO3)3 + H2O and their binary subsystems Y(NO3)3 + H2O, Ce(NO3)3 + H2O, and Nd(NO3)3 + H2O at (293.15, 298.15, and 308.15) K. The measured conductivities were used to test the generalized Young’s rule and the semi-ideal solution theory. The comparison results show that the generalized Young’s rule and the semi-ideal solution theory can yield good predictions for the conductivities of the ternary electrolyte solutions, implying that the conductivities of aqueous solutions of (1:3 + 1:3) electrolyte mixtures can be well predicted from those of their constituent binary solutions by the simple equations.
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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
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DOI
PubMed
高影响因子
Journal of Cleaner Production
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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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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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高影响因子
IET Nanodielectrics
·
2018
·Vol. 1
·期 4
·137-142
·
IF 0
Yu-Chen Lu,Shuhui Yu,Xierong Zeng,Rong Sun,Ching-Ping Wong
Dielectric nanocomposites with an enhanced energy density are highly desired in modern electronic and electrical power systems. In this study, the authors developed a new flexible dielectric nanocomposite thin film using Y-doped barium strontium titanate (Y:BST) nanoparticles as fillers and polyvinylidene fluoride as a polymer matrix. The nanocomposites exhibited a high energy density of 11.07 J/cm 3 at 4300 kV/cm with a low filler content. Through the analysis of defect chemistry with X-ray photoelectron spectroscopy, the dopant Y 3+ occupies A-site of the perovskite structure, which is associated with the generation of Ba&Sr vacancies and oxygen vacancies for charge compensation. As a result, TiO 6 2– octahedron distortion occurs, which is responsible for the enhanced dielectric permittivity. Meanwhile, the dielectric loss maintains a low level and the breakdown strength increases at a low filler loading, resulting in improved energy density.
研究领域:
材料科学
·
电子工程
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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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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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高影响因子
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