TALANTA
·
2020
·
IF 5.339
Chengyi Xie,Qidi Wu,Shulei Zhang,Chenlu Wang,Wenqing Gao,Jiancheng Yu,Keqi Tang
Glycosylated proteins are an essential class of molecules playing critical roles in complex biological systems. Understanding their biological functions remains extremely difficult due to the extremely broad compositions and structure variations of glycans . Although the combination of ion mobility spectrometry and mass spectrometry (IMS-MS) has become a promising technique in glycan structure characterization and composition identification, the insufficient resolving power of most IMS-MS instruments has limited its utility in performing the comprehensive structure characterization of glycans. To mitigate the low IMS resolving power, metal ion incorporation has been employed to enhance the separation of isomeric glycans. Here, we present a systematic investigation of many different glycan-metal ion complexes in an attempt to optimize the IMS separation of different isomeric glycans. By selecting optimum glycan-metal ion complexes, partial IMS separation was realized for all the 21 isomeric glycan pairs used in the experimental study. Baseline IMS separation was achieved for 76% of these isomeric glycan pairs. The best IMS separation of isomeric glycans was achieved in some cases by incorporating multiple ions with a glycan, such as the complex [glycan + Ca + Cl] + . In addition, the well-known IMS-MS measurement trendlines, often used to identify specific compound classes, were preserved for glycans even for all the 270 glycan-metal ion complexes observed in IMS-MS spectra.
研究领域:
分析化学
·
生物化学
·
质谱
·
蛋白质组学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2015
·
IF 3.368
Xiaole Weng,Xiaoxia Dai,Qingshan Zeng,Yue Liu,Zhongbiao Wu
Heteropoly acids (HPAs) have been effectively utilized in selective catalytic reduction (SCR) of NO to improve the NH 3 absorption capacity and alkaline/alkali metal resistance for SCR catalysts. However, despite the promise on super-acidities, their other properties that would work on SCR process are still lack of exploration. In this study, a 12-tungstaphosphoric acid (H 3 PW 12 O 40 , HPW) was selected to modify a well-reported CeO 2 catalyst. The resulted CeO 2 /HPW catalyst was subsequently utilized for SCR of NO with excess NH 3 , which revealed a significantly promoted performance in SCR reaction. DRIFT analyses showed that the unique NO 2 absorption capacity of HPW could prevent the NO 2 being further oxidized into nitrate species and the abundant Brønsted acid sites could effectively retain the NH 3 , avoiding them being over-oxidized at evaluated temperatures. The presence of NO 2 was demonstrated able to induce a so called “fast SCR” reaction over the CeO 2 /HPW catalyst, which effectively facilitated the SCR reaction. Furthermore, we have also constructed a CeO 2 @HPW catalyst, which showed an enhanced SO 2 poisoning resistance in SCR reaction.
研究领域:
环境科学
·
催化化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Electronic Materials
·
2023
·
IF 4.7
Yingjun Chai,Zhili Juan,Ye Wu,Yang Liu,Xiaoming Li
Metal halide perovskites have been demonstrated as potential X-ray detection materials due to their high defect tolerance, large diffusion length, and high attenuation efficiency. X-ray detectors based on hot-pressed perovskite wafers are investigated intensively recently because of the convenience of scalable fabrication. However, in spite of the large crystal size within wafers, the prepared detectors usually suffer from severe ion migration and current drift under both dark and bright states. In this work, ethylenediamine dihydroiodate (EDDI) was introduced as a strong surface passivation agent, which compensated for the surface iodide vacancy successfully. The ion migration in optimal MAPbI3@EDDI wafer is significantly suppressed, which is manifested by increased migration activation energy and stable current under high bias for 10 h. Moreover, the introduction of EDDI also reduced the dark current, contributing a high on–off ratio and a champion sensitivity of 8291.22 μC Gyair–1 cm–2. A low detection limit of 340 nGyair s–1 is also obtained, which is much lower than that of commercial X-ray detectors. Besides, the as-fabricated X-ray detector can endure long-term operation with flat current under a high bias of 20 V. This work provides a route for the performance improvement of perovskite wafer-based X-ray detectors.
研究领域:
材料科学
·
物理学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2014
·
IF 5.9
Lei Chen,Zhichun Si,Xiaodong Wu,Duan Weng
A CuO–CeO2–TiO2 catalyst for selective catalytic reduction of NOx with NH3 (NH3-SCR) at low temperatures was prepared by a sol–gel method and characterized by X-ray diffraction, Brunner–Emmett–Teller surface area, ultraviolet–visible spectroscopy, H2 temperature-programmed reduction, scanning electron microscopy and in situ diffuse reflectance infrared Fourier transform spectroscopy (in situ DRIFTS). The CuO–CeO2–TiO2 ternary oxide catalyst shows excellent NH3-SCR activity in a low-temperature range of 150–250 °C. Lewis acid sites generated from Cu2+ are the main active sites for ammonia activation at low temperature, which is crucial for low temperature NH3-SCR activity. The introduction of ceria results in increased reducibility of CuO species and strong interactions between CuO particles with the matrix. The interactions between copper, cerium and titanium oxides lead to high dispersion of metal oxides with increased active oxygen and enhanced catalyst acidity. Homogeneously mixed metal oxides facilitate the “fast SCR” reaction among Cu2+–NO, nitrate (coordinated on cerium sites) and ammonia (on titanium sites) on the CuO–CeO2–TiO2 catalyst at low temperatures.
研究领域:
环境催化
·
材料化学
·
表面科学
·
化学工程
·
大气污染控制
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 12
·期 25
·9247-9254
·
IF 5.7
Zhaolin Song,Menghua Zhu,Sixin Chen,Meng Xu,Wanqi Jie
All-inorganic halide perovskite CsPbBr3 with superior environmental stability, remarkable radiation hardness and great defect tolerance has emerged as a competitive material in radiation detection. However, the operational stability of CsPbBr3 based detectors remains a problem due to their unstable electrical properties. Perovskite nanowires with a preferred orientation show greater accessibility compared with their single-crystal partners that undergo time-consuming growth. However, the synthesis of perovskite nanowire arrays with excellent stability, tunable distribution arrangements and adjustable compositions has been a major challenge. Herein, CsPbBr3 perovskite columnar crystal films with a controlled diameter (50–400 nm) are successfully synthesized with porous anodic aluminum oxide (AAO) templates. The passivated surface between AAO and CsPbBr3 nanowires resulted in reduced ion migration and stable operation performance. The CsPbBr3 based X-ray detectors display a low dark current drift of 2.185 × 10−6 nA cm−1 s−1 V−1, a high resistivity of 3.946 × 1011 Ω cm and a detection limit of 3.70 μGyair s−1 with an AAO pore size of 50 nm. This work establishes a suitable method to synthesize all-inorganic perovskite nanowires with controlled diameters for stable X-ray detection performance.
研究领域:
材料科学
·
辐射探测技术
✓ 已验证
产品关联
DOI
高影响因子
Agriculture-Basel
·
2023
·Vol. 13
·期 2
·236
·
IF 3.6
Qi Liu,Changfeng Shan,Haiyan Zhang,Cancan Song,Yubin Lan
The droplet size distribution following pesticide application practices can significantly impact droplet drift and non-target organisms (animals and plants). However, the relationship among liquid sheet breakup, drop formation, and droplet drift is an area that has been studied over the past 65 years but is still not fully understood. The objectives of this study were severalfold: to examine the liquid sheet breakup following the use of different adjuvants (sodium dodecyl sulfate, aerosol OT, and silicone at 1%) and their effects on the drift via three commonly used commercial spray nozzles (XR, AIXR, and TXVK). The spray sheet and initial droplet size spectrum for each spray was detected by a particle image velocimetry (PIV) system, and the drift for each treatment was measured in a wind tunnel. The nozzle type and the spray solution were found to significantly affect the liquid sheet breakup characteristics. AIXR produced large droplets, and TXVK with short liquid sheet length produced more small droplets. All adjuvants used in these experiments increased the formation of large droplets upon atomization while simultaneously reducing driftable fines (e.g., drops %<150 µm). The drift potential can be reduced by up to 66.1% when switching from a fine spray quality (TXVK) to a coarse spray quality (AIXR). The SDS adjuvant provided the most effective drift reduction for XR and TXVK nozzles showing reduced drift potential by 69.2% and 66.3%, respectively, while the silicone adjuvant showed the largest drift reduction for AIXR of 78.3%. The correlation between the liquid sheet length and DV0.5was positive for XR and TXVK nozzles, and there was a significant positive correlation between %<150 µm and drift potential for all nozzles. This work suggests that the drift can be reduced significantly by changing the nozzle type and adding pesticide adjuvant into spray solution, which provided data support for the drift reduction of plant protection drones.Keywords:wind tunnel;droplet drift;PIV system;liquid sheet breakup
研究领域:
农业工程
·
植物保护
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Gongcheng Sun,Wan Chen,Yaoying Li,Subing Fan,Junmin Lv,Tiansheng Zhao
The hydroformylation reaction is very important in industry. However, the leaching of the noble metal Rhodium (Rh) and the separation of homogeneous catalyst have always been difficult problems to solve. And even heterogeneous Rh-base catalyst was developed to solve the separation problem, the serious Rh losing is still hard to avoid. In this work, heterogeneous encapsulated Rh@NaX was prepared by using one-step synthesis method and used as catalyst without reduction in 1-hexene hydroformylation reaction. Rh@NaX catalyst exhibited outstanding catalytic performance. When directly complexed with ligand triphenylphosphine (PPh 3 ), it achieved high heptanal yield of 97.53 %, high n/i ratio of 2.59 and high TOF of 6588 h −1 . Interestingly, encapsulated catalyst exhibited higher recycling stability and much lower Rh leaching compared to impregnated catalyst. In addition, in situ XPS and DRIFT analyses were conducted to elucidate the reduction process of Rh and the reaction pathway.
研究领域:
催化
·
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2025
·
IF 10
Yingxi Zhang,Hanghang Zhang,Chong Cao,Pengyue Zhao,Mingming Yin,Manli Yu,Qiliang Huang,Lidong Cao
Glyphosate isopropylammonium salt (GIS) is widely applied in global agricultural production owing to its high herbicidal efficiency and low cost. However, droplet drift is the main cause of GIS missing the target area and damaging the surrounding environment, thus necessitating the development of novel strategies to increase pesticide utilization and improve agricultural sustainability. Herein, a simple and scalable method has been developed for reduced droplet drift and enhanced target deposition of GIS via a sprayable hydrogel assisting by octadecylamine-modified polyacrylic acid (P(AA/C 18 ). Hydrogel tablets of GIS (P (AA/C 18 )@GIS) are formulated from P(AA/C 18 ) and GIS without other additives, which demonstrates the advantages of convenient transportation, environmental friendliness and low cost. Dilution of the P(AA/C 18 )@GIS tablets with water affords liquid GIS hydrogel, which inhibits breakage and rebound behavior upon impact with the leaf surface. Wind tunnel tests showed that the droplet drift volume of P(AA/C 18 )@GIS at 4 m from the nozzle was 40.89 μL, which was 85.3 % and 78.96 % less than those of GIS aqueous solution (GIAS) and commercially available GIS liquid (GISS), respectively. Moreover, droplet deposition was significantly lower in non-target regions compared to those of GIAS and GISS, with a minimum reduction of 32.2 %. The herbicidal ability of P(AA/C 18 )@GIS against barnyardgrass was comparable to that of GISS. Spraying the carrier material had no effect on the growth of conventional maize, while P(AA/C 18 )@GIS showed safety in the growth of glyphosate-resistant cotton. This research promotes sustainable agricultural development by effectively addressing pesticide drift and its associated issues.
研究领域:
农业化学
·
农药科学
·
环境科学
·
高分子材料
·
作物保护
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Engineering Materials
·
2026
·
IF 3.5
Yichun Zhang,Xianchun Chen
Wearable ionic hydrogel strain sensors often suffer from limited cyclic reliability because mechanical fatigue and deformation-induced changes in ion-transport pathways can lead to structural damage and signal drift. Here, we report a one-pot, filler-free hydrogel design that addresses this challenge by combining reversible dynamic bonding with in situ nanophase formation. Poly(vinyl alcohol) (PVA) was acetal-grafted with 2,4-dimethyl-5-formyl-1H-pyrrole-3-carboxylic acid (C8H9O3N), followed by reversible Fe3+ coordination. Subsequent ethanol/water solvent exchange induced the formation of rigid nanohydrophobic domains, yielding a hierarchical triple dynamic network based on hydrogen bonding, Fe3+ coordination, and nanoscale phase reinforcement. This structural design is proposed to improve energy dissipation, facilitate network reconstruction, and help maintain ionic conduction during repeated deformation. The optimized hydrogel (5% grafting, 75% Fe3+) exhibited a tensile strength of 466 kPa, an elongation at break of 488.66%, and a dissipated energy density of 156 kJ m–3 at 250% strain. As a resistive strain sensor, it showed repeatable responses over the 10–60% strain range and retained more than 90% of its signal after 2600 cycles at 55% strain. The hydrogel also enabled monitoring of representative human motions and showed preliminary degradability in soil-burial tests, with 11.92% residual mass after 50 days. These results demonstrate a simple and potentially scalable strategy for developing mechanically robust and cycle-stable hydrogel sensors for wearable monitoring applications.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
·
2023
·
IF 3.8
Hao Zhang,Haiqiang Yang,Zhengjun Chen,Fang Yuan,Qiang Yang,Bo Liu
The presence of dissolved salts in water inhibits bubble coalescence, facilitating the generation of microbubbles, while also maintaining a tangentially mobile air-water surface. In this study, we investigated the variation of bubble size and gas holdup with gas velocity in NaCl solutions using a rectangular bubble column and interpreted the experimental data using the one-dimensional drift-flux model. For the generated bubbles at the size between 0.4 mm and 1 mm, we found that the Moore model assumes mobile air-water surfaces, rather than the Schiller and Naumann model, should be used to describe the bubble terminal velocity. The latter model, which assumes an immobile air-water surface, has been used successfully to predict two-phase flow in surfactant solutions but would overestimate the gas holdup by almost 100 % for NaCl solutions. This finding emphasizes the crucial role of surface mobility in determining gas holdup. Thus, we propose the use of a one-dimensional drift-flux model, incorporating the Moore model to describe bubble terminal velocity, for microbubble systems with a mobile air-water interface.
研究领域:
化学工程
·
流体力学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Wei Zhou,Wenwei Zhang,Xueqin Ma,Haichen Lai,Xingguang Zhang
Metal-zeolites catalysts are of great importance in selective organic conversions. Zeolites possess features of highly-ordered porous network, adjustable acidic properties (Brønsted/Lewis), spatial nanoconfinement effects, unique shape selectivity and the strong (hydrothermal-) stability. The role of zeolite hydroxyl (z-OH) groups, such as bridging ones in Si-O(H)-Al (B acids) and terminal ones in Al-OH and Si-OH (silanols), in catalysis is an interesting topic, particularly when they are not catalytic active sites, while they affect the catalytic performances. This study comprehensively investigated series of Au/USY catalysts in the selective oxidation of benzyl alcohol to benzaldehyde and clarified the dominating contributions of Al-associated z-OH groups to affecting catalytic conversions and selectivity via altering the Si/Al ratio and reducing z-OH groups by amorphous silica species derived from diethoxydimethylsilane under high-temperature calcination. The catalysts were characterized by XRD, BET, TEM, XPS, UV/Vis, FT-IR and in-situ DRIFT to investigate crystal structures, textural properties, morphologies, size distribution, chemical state of gold, acidity, and adsorptive properties. The experimental results proved that zeolites with a higher amount of z-OH groups tuned by Si/Al ratios or by diethoxydimethylsilane silylation exhibited higher catalytic activity because of the adsorption effect. Finally, a possible mechanism was discussed based on the experimental results and literature.
研究领域:
催化
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Feifei Guo,Fuai Hu,Yufei Song,Lei Wang,Zeliang Gao,Xutang Tao
X-ray detection materials and devices have received widespread attention due to their irreplaceable role in the medical, industrial, and military fields. In this paper, BaTeW2O9 (BTW) crystal containing lone pairs of electrons with large atomic numbers and high density is reported as a new type of oxide crystal X-ray detection material. The anisotropic X-ray detection performance of the BTW single crystal (SC) is systematically studied. At 120 keV hard X-ray photon energy, the BTW SC X-ray detectors along the crystallographic a-, b-, and c-axes directions achieved high sensitivities of 371, 404, and 368 μC Gyair–1 cm–2 respectively. More importantly, no dark current drift phenomenon was observed in the BTW SC X-ray detectors. The dark current drifts along the crystallographic a-, b-, and c-axes directions are as low as 7.81 × 10–9, 8.61 × 10–9, and 7.71 × 10–9 nA cm–1 s–1 V–1, respectively. In addition, the BTW SC X-ray detector has an ultralow detection limit of 21.9 nGyair s–1. Our research provides a new X-ray detection material with potential application value and a new material design strategy for the field of radiation detection.
研究领域:
材料科学
·
辐射探测
·
半导体器件
·
晶体学
·
光电子学
✓ 已验证
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）