JOURNAL OF SUPERCRITICAL FLUIDS
·
2019
·
IF 3.481
Lei Bao,Yang Chen,Liru Ma,Dongdong Hu,Yuan Zong,Ling Zhao,Weikang Yuan,Tao Liu
Three nonfluorinated co-surfactants, sodium bis (2-(isopropoxy)-ethanol) sulfonate (di-IOESS), sodium bis (3,5,5-trimethyl-hexanol) sulfonate (di-TMHSS) and sodium bis (2-(pivaloyloxy)-ethanol) sulfonate (di-POESS) were synthesized to replace partial sodium bis (3,3,4,4,5,5,6,6,6-nonafluoro-hexanol) sulfonate (4FS(EO) 2 ) to stabilize W/C microemulsions to decrease the fluorine content. The results showed that the stabilization ability of the co-surfactants at less than 55 °C was in the following order: di-TMHSS > di-POESS > di-IOESS. Results for MD simulations proved that the co-surfactants mainly changed the packing efficiency of the surfactant short chains. The flexible co-surfactant tails could maintain the bending fraction of the surfactant short tail at a low level and the appropriate length of co-surfactant tails helped to occupy more volume at the interface. Therefore, the nonfluorinated co-surfactants with flexible branched tails in an appropriate length relatively to the surfactant tails were conducive to replace partial fluorinated surfactants, which may help for designing nonfluorinated co-surfactants to decrease the fluorine content in W/C microemulsions.
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高影响因子
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
·
2016
·Vol. 33
·期 7
·388-395
·
IF 4.367
Wenbin Wang,Liqiang Liu,Liguang Xu,Hua Kuang,Jianping Zhu,Chuanlai Xu
Staphylococcal enterotoxins (SEs) in food samples can cause severe gastroenteritis even at low doses. Detection of SEs with a single assay would not only improve reliability and portability, but would also save time. In this paper, for the first time, a multiplexed gold-nanoparticle-based immunochromatographic (ICT) strip that allows the simultaneous detection of the five main SEs has been reported: SEA, SEB, SEC, SED, and SEE. Based on the sandwich immunoassay of each SE, a multiplexed ICT strip with five test lines is developed. Sensitive and specific paired monoclonal antibodies facilitate the detection, allowing for high sensitivity and good specificity. The portable biosensor platform can simultaneously detect SEA, SEB, SEC, SED, and SEE at concentrations as low as 2.5, 2.5, 2.5, 1, and 5 ng mL −1 , respectively. The entire test can be performed within 15 min and requires no sophisticated instruments except a portable strip reader. To evaluate the multiplexed strip, naturally SEA and SEC contaminated milk samples and pure milk samples spiked with the five SEs are analyzed.
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高影响因子
MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 2
·1-12
·
IF 5.3
Wang Xiaoying,Yuan Wei,Kuang Yijing,Chen Xuyuan,Wang Xiaoning,Zhang Xiaoyu
A ratiometric electrochemical immunosensor is proposed for simultaneous detection of cellular-myelocytomatosis oncoprotein (C-myc) and B-cell lymphoma 2 (Bcl-2) via the potential-resolved strategy. It relied on multi-role co-loaded alloy composites (CLACs) and poly(3,4-ethylenedioxythiophene) (PEDOT)-graphene oxide (GO)-multiwalled carbon nanotubes (MWCNTs) (PGM) modified electrodes. CLACs with good catalytic and enzyme-like properties were synthesized in one step by loading tetramethylbenzidine (TMB) or methylene blue (MB) into Pt-Pd alloy and used as label materials. After immunological reactions, CLACs showed distinguishable dual differential pulse voltammetry signals at − 0.26 V and 0.38 V, corresponding to C-myc and Bcl-2, and the PGM had an electrochemical signal at 1.2 V, which could be used as a reference signal to construct a ratiometric sensor. CLACs had a satisfactory synergistic effect with the PGM, and eventually achieved quadruple signal amplification. Thus, benefiting from multiple magnification and ratiometric self-calibration functions, sensitive detections of C-myc and Bcl-2 were achieved, with detection limits as low as 0.5 and 2.5 pg mL −1 , respectively. Additionally, when the designed method was applied to blood samples from lymphoma patients, results consistent with the ELISA kit were obtained. This will open avenues for constructing multiple protein detection sensors. Graphical abstract
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高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Zhuoya Ren,Shuai Liu,Jianqiang Chen,Yang Yu,Qianqian Shang,Sandile Fakudze,Chengguo Liu,Peiguo Zhou,Qiulu Chu
As the world transitions towards an electric vehicle-driven future, demand for energy storage materials has continued to grow. Silicon-carbon composites are considered one of the most promising anode materials for lithium-ion batteries owing to their superior electrochemical performance. However, their commercialization is seriously limited due to the use of chemical reagents as carbon source, unstable coating structures and the complexity of the synthesis process. Herein, a facile one-step carbonization method at 800 °C was used to prepare Si@SiO X @C-800 composite by using rice husks, 1‑butyl‑3-methylimidazolium acetate (BMIMAcO) and silicon nanoparticles (Si-NPs). When the optimized Si@SiOx@C-800 was applied to the anode of lithium-ion batteries, it exhibited prominent reversible capacity (694 mAh g −1 at 0.1 A g −1 ), with remarkable rate performance (220 mAh g −1 at 2 A g −1 ), and excellent cyclic stability (460 mAh g −1 with a capacity retention of 105.7% at 1 A g −1 after 1000 cycles). The coupling of interfaces by Si-N bonds led to the formation of a double-layered structure which enhanced Li + diffusion coefficients and electrochemical kinetics, while tremendously limiting the volume variation of Si nanoparticles (Si NPs). The double-shell-structured Si@SiO X @C-800 composite material which was facilely synthesized using an eco-friendly approach presented superior electrochemical performance.
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高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2017
·Vol. 21
·期 12
·3611-3618
·
IF 2.316
Luo Rongjie,Lu Yang,Hou Xiaoyi,Yu Qiuhong,Peng Tao,Yan Hailong,Liu Xianming,Kim Jang-Kyo,Luo Yongsong
Composites consisting of selenium/carbon (Se/C) encapsulated by ultra-thin Ni(OH) 2 nanosheet shell are synthesized as cathode for high-performance lithium-selenium batteries. The Se/C-Ni(OH) 2 cathode presents excellent discharge capacities and cyclic stability with almost 100% Coulombic efficiencies. It delivers a reversible capacity of 323 mAh g −1 after 300 cycles with almost negligible capacity degradation after 100 cycles at a high current density of 1 C. Several unique functional features of the composite electrodes are responsible for the findings. The uniform mixture of Se and carbon black in the composite promotes the utilization of the active materials with enhanced ion/electron transfer. The Ni(OH) 2 nanosheets maintain the integrity of Se/C core during cycles, reducing the shuttling effect reactions of polyselenides. These results demonstrate that the Se/C-Ni(OH) 2 composite cathode is a promising candidate for application in rechargeable lithium-selenium batteries.
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高影响因子
JOURNAL OF POWER SOURCES
·
2014
·
IF 5.211
Xue Zhou,Yuanfu Deng,Lina Wan,Xusong Qin,Guohua Chen
A uniform carbon coated LiFe 0.15 Mn 0.85 PO 4 (LFMP/C) cathode material is synthesized by a surfactant-assisted, highly reproducible and energy-saving solid state method using a bimetallic oxalate (Fe 0.15 Mn 0.85 C 2 O 4 ) precursor. The obtained LiFe 0.15 Mn 0.85 PO 4 /C composite is characterized by X-ray diffraction (XRD), Raman spectrum , elemental analysis (EA), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The experimental results demonstrate that the oleic acid as a surfactant , for the scale preparation of LFMP, plays a critical role in controlling size of the obtained composite. The LiFe 0.15 Mn 0.85 PO 4 /C exhibits high specific capacity and good rate performance. It delivers initial discharge capacities of 156.5, 142.5, 129.0 and 103.0 mAh g −1 at 0.05, 0.1, 0.5 and 1C, respectively. Moreover, it shows good cycle stability at both room temperature (25 °C, 89% and 88% capacity retention after 250 and 500 cycles at 0.5 and 1C rates, respectively) and elevated temperature (55 °C, 80% capacity retention after 200 cycles at 0.5C rate). The significantly improved rate and cycling capability of the LiFe 0.15 Mn 0.85 PO 4 /C is attributed to the uniform carbon coating layer on the primary particles, the conductive network provided by the carbon between the LiMn 0.15 Fe 0.85 PO 4 /C particles and the sufficient pores formed in the LiFe 0.15 Mn 0.85 PO 4 /C aggregates.
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高影响因子
ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Zhilin Yan,Jiyang Liu,Yangfan Lin,Zheng Deng,Xueqin He,Jianguo Ren,Peng He,Chunlei Pang,Chengmao Xiao,Deren Yang,Haojie Yu,Ning Du
Silicon (Si) is considered as the most promising candidate for anode materials in the next-generation lithium-ion batteries (LIBs). Regulating the morphology and structure of Si plays a vital role in alleviating the volume expansion and improving electronic conductivity. Herein, an ingenious core-shell structure (denoted as CoMOF-D@Si@C) is synthesized by depositing Si uniformly on the pyrolytic metal-organic frameworks (MOFs) via chemical vapor deposition (CVD) method and then encapsulated with a carbon shell. The CoMOF-D@Si@C exhibits excellent rate capability and cycle performance, which delivers a high-rate capability of ~957 mAh g −1 at 10 A g −1 and a reversible capacity of 1493 mAh g −1 after 400 cycles. In particular, the capacity is maintained at 648 mAh g −1 after 1200 cycles at a high current density of 4 A g −1 with a rapid increase of the Coulombic efficiency (CE) to 99.8% after only 5 cycles and the average CE (99.7%) in the whole cycling at 4 A g −1 . Profiting from the outer carbon shell, uniform Si deposition and inner porous pyrolytic MOF structure, this architecture can maintain structural stability and provide constructive conductivity during cycling processes. The superior electrochemical performance of the CoMOF-D@Si@C composite makes it a promising anode material for LIBs.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Yang Xia,Liyue Yu,Chengwei Lu,Jing Zhu,Zhen Xiao,Jun Zhang,Chu Liang,Hui Huang,Yongping Gan,Wenkui Zhang
Monoclinic Li 3 V 2 (PO 4 ) 3 (LVP) fulfills safety requirements including superior chemical and thermal stabilities since the oxygen atoms are firmly anchored in PO 4 3− units, however the low intrinsic electronic conductivity strictly limits its electrochemical performance . Herein, to overcome this problem, a rationally designed passion fruit-like LVP@C/CNT composite constructed with LVP grains as seeds, carbon matrix as pulp, and carbon nanotubes (CNTs) as filaments, has been prepared via a facile spray pyrolysis method. In such unique biomimetic structure, carbon matrix encases LVP to reduce its particle size, which is beneficial to shorten ion pathways; Porous structure scattered around carbon matrix facilitates the rapid penetration of electrolyte; 3D CNT networks afford high-speed electron conduction and remarkable structural stability by forming the bridges between LVP grains. Owing to the multiple merits of this biomimetic structure, the rationally designed LVP@C/CNT composite with 3 wt% CNT exhibits high reversible capacity, superior cyclic stability and remarkable rate capability.
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高影响因子
Nano Energy
·
2020
·
IF 16.602
Baoyu Sun,Shuaifeng Lou,Wei Zheng,Zhengyi Qian,Can Cui,Pengjian Zuo,Chunyu Du,Jingying Xie,Jiajun Wang,Geping Yin
Constructing robust 2D−based energy storage nanomaterials by well−defined pore architectures and rational surface modification are critical yet daunting challenges for rechargeable alkali−ion batteries. Herein, a new−type 2D interwoven multi pores decorated Co 3 O 4 @N−doped carbon nanosheet with rich surface defects is proposed as lithium/sodium ion anodes for the first time. The combining experimental researches, microscopic structure characterization and dynamics analysis demonstrate that the multi porous structure provides large numbers of channels to accelerate Li + /Na + transport, rational surface design creates abundant active sites for fast ions reactions, while robust carbon shell offers excellent ionic/electrical conductivity and structural integrity. The obtained bifunctional composites deliver superior rate performance and long−term cycle stability (~529 mA h g −1 after 2000 cycles in LIBs and ~166 mA h g −1 after 1700 cycles in SIBs) due to the synergistic contribution of the unique structure and surface defects . Furthermore, it still remains a high reversible capacity (>610 mA h g −1 after 1000 cycles) in full cell. Kinetic analysis reveals the designed anode exhibits prominent pseudocapacitive behavior, enabling ultra−fast lithium/sodium storage and ultrahigh−rate capability. This work offers valuable insights for developing high performance energy storage devices.
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高影响因子
AICHE JOURNAL
·
2025
·Vol. 71
·期 8
·e18862
·
IF 4
Yue Zhang,Rongrong Zhang,Shuzhen Lyu,Xiangwei Ren,Guozhu Liu,Li Wang
Supported Pd-based nanoparticles are widely regarded as the most effective catalysts for 2-ethylthraquinone hydrogenation. Herein, the heteroenergetic dual-supports were prepared by coating resorcinol-formaldehyde (RF) resin on mesoporous SBA-15 to regulate the growth and surface microenvironment of Pd. After calcination and reduction, phenolic hydroxyl groups in the residual carbon layer effectively reduced the Pd particle size, induced the formation of adjacent Pd 0 –Pd δ+ , and created hydrophobicity. Density functional theory calculations revealed that Pd atoms preferentially interact with OH on C, rather than with OH on SBA-15, providing an intrinsic driving force for smaller Pd particle size. The mass ratio of RF to SBA-15 was shown to be a crucial parameter affecting the catalytic performance. At the ratio of 4 (carbon content of 2.02%) the catalyst possesses the smallest Pd particles, 30% Pd δ+ proportion, and higher hydrophobicity, achieving the best catalytic performance, with an activity of 0.57 molH 2 ·gPd −1 ·min −1 and a selectivity of 95.3%.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Haining Hou,Zehao Zhang,Haibo Li
Capacitive deionization (CDI) is a highly efficient desalination technique to obtain the portable water with low energy cost and environmental-friendly. However, the desalination capacity is still challenging. In this work, a Cu@C anode presenting the spherical structure with plenty of 3D diffusion tunnels has been proposed for CDI anode towards the enhanced Cl - removal. Such structure not only provide abundant electroactive sites for adopting salty ions, but also promote the electrosorption kinetics. Aiming to extract Cl - from the stream, the optimized Cu@C // activated carbon CDI device demonstrates the exceptional desalination capacity of 149.14 mg/g at 1.4 V in 529 ppm NaCl solutions as well as the fast desalination rate of 8.32 mg/g/min, which are relatively high as compared to many reported data. Moreover, the mechanism analysis points out that the desalination behavior of Cu@C electrode is dominantly governed by the conversion of Cu 0 and Cu + . Beyond that, the desalination capacity decay upon the long cycles is attributed to the irreversible Cu-Cl bonds.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Tengyu Zhang,Meijia Liu,Can Li,Jiwei Zhang,Hui Gao,Fangong Kong,Xuezhang Xiao
Magnesium hydride (MgH 2 ) emerges as a cost-effective and high-capacity hydrogen storage candidate. Despite these advantages, its utilization is constrained by sluggish reaction kinetics and the requirement for elevated operating temperatures. In this study, we aim to address these limitations by investigating the synergistic catalytic effect of yttrium fluoride (YF 3 ) and nickel-loaded nitrogen self-doped porous carbon (Ni/C) as catalysts for MgH 2 . Co-doping with YF 3 and Ni/C reduces the dehydrogenation activation energy to 74.56 kJ/mol, enabling 5.22 wt% H 2 desorption within 5 min at 300 °C. Notably, the system exhibits enhanced low-temperature reaction kinetics, with the MgH 2 -YF 3 + Ni/C composite releasing 5.74 wt% H 2 at 250 °C within 30 min. At 50 °C, the co-doped composite achieves a hydrogen storage capacity of 5.18 wt% within 4 h, whereas the composite with Ni/C only absorbs 3.72 wt% H 2 . Moreover, the MgH 2 -YF 3 + Ni/C shows 98.4 % capacity retention after 30 cycles, indicating excellent reversibility. Mechanistic analysis reveals that the outstanding catalytic performance originates from the synergistic effect among YH 2 /YH 3 , MgF 2 , Mg 2 Ni/Mg 2 NiH 4 , and nitrogen-doped carbon. YH 2 /YH 3 and Mg 2 Ni/Mg 2 NiH 4 act as “hydrogen pump”, providing more active sites for the reaction. Additionally, MgF 2 functions as an electron transfer medium, weakening the Mg-H bond. The introduction of nitrogen self-doped porous carbon improves the dispersion of the catalyst and prevents aggregation, enhancing the dissociation of hydrogen molecules. This work demonstrates a promising strategy for improving the low-temperature hydrogen storage performance of MgH 2 and offers insights into the design of rare-earth fluoride-based catalysts.
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