JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Wei Shen,Liang Qiao,Juan Ding,Yongming Sui
Tailoring tantalum disulfide (TaS 2 ) electrocatalysts with tunable stacking architecture and phase structure is of great importance for advancement of hydrogen evolution reaction (HER). In this work, stacking architecture- and phase- modulated tantalum disulfide nanosheets are reported through a facile liquid phase synthesis strategy. Accordion-like nanosheets , vertical nanosheets and ultrathin nanosheets are named according to their obvious stacking architecture, and 1 T-2 H mixed phase structures containing different degrees of 2 H phases are realized. High-resolution transmission electron microscopy shows that there are obvious lattice defects in the nanosheets. Tantalum disulfide nanosheets synergistically integrate multiple advantages of nanostructure engineering, phase engineering and defect engineering. In the HER process, the ultrathin tantalum disulfide nanosheet structure is conducive to the in-plane electron transfer , and its close contact with the electrode surface makes the charge transfer faster and has the best HER activity. The overpotential of the ultrathin nanosheet electrocatalyst at 10 mA cm −2 is 280 mV. After 10,000 CV cycles and over 40 h of i-t test, the catalyst still has high stability in acidic media. Theoretical calculations show that the addition of 2 H phase structure and rich defects improves the intrinsic activity and active sites, and jointly promotes the improvement of HER performance. Our work integrates a variety of optimal regulation methods into TaS 2 nanosheets, providing a new idea for the construction of advanced electrocatalysts for water electrolysis.
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高影响因子
CORROSION SCIENCE
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2016
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IF 5.154
Zhiyong Hu,Yanbin Meng,Xuemei Ma,Hailin Zhu,Jun Li,Chao Li,Duanlin Cao
Two benzothiazole derivatives, namely 2 - ( n -hexylamino)-4-(3′- N,N -dimethylamino-propyl)amino-6-(benzothiazol-2-yl)thio-1,3,5- s -triazine (BTC 6 T) and 2-( n -octylamino)-4-(3′- N,N -dimethylamino-propyl)amino-6-(benzothiazol-2-yl)thio-1,3,5- s -triazine (BTC 8 T), were synthesized to study their corrosion inhibiting effect against steel in a 1 M HCl solution. The corrosion inhibition efficiency was measured using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization , and weight loss methods. Both inhibitors offered extra stability and higher inhibition efficiencies again steel corrosion than previously reported benzothiazole family inhibitors. These inhibitors can be adsorbed onto surfaces by both physical and chemical means. Finally, quantum chemical parameters were calculated using the density functional theory method (DFT) and the correlation between the theoretical and experimental results are discussed.
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高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Xiaowei Li,Xing Shen,Junmei Zhao,Yang Yang,Qiangqiang Zhang,Feixiang Ding,Miao Han,Chunliu Xu,Chao Yang,Huizhou Liu,Yong-Sheng Hu
Na-ion batteries (NIBs) have been considered as potential candidates for large-scale energy storage, where O3-type Na-based layered oxide cathodes have attracted great attention due to their high capacity and low cost. However, O3-NaxTMO2 materials still suffer from insufficient air stability, which could lead to deteriorative electrochemical properties and thus hinder their practical application. In this work, a series of Al-doped O3-NaFe(1/3–x)Ni1/3Mn1/3AlxO2 cathodes prepared by a co-precipitation method were investigated to enhance their electrochemical performance and air stability through stabilizing their structural and interface chemical properties. The Al-doped O3-NaFe(1/3–0.01)Ni1/3Mn1/3Al0.01O2 (NFNMA0.01) cathode delivers a comparable capacity of 138 mAh g–1 and keeps a capacity retention of 85.88% after 50 cycles at 0.2 C, while the undoped O3-NaFe1/3Ni1/3Mn1/3O2 (NFNM) can only keep a capacity retention of 71.02%, although with an initial capacity of 141 mAh g–1 at 0.2 C. For the air stability, the capacity decay rates are 58.87 and 5.07% for the undoped NFNM and Al-doped NFNMA0.01 after the air exposure for 30 days, respectively. The greatly decaying electrochemical performance could be due to the formation of carbonates during air exposure, which can be efficiently suppressed by Al doping. The doped Al3+ has been confirmed to be inserted into the NFNM crystal lattice, inducing the reduced values of lattice parameters a and c due to the smaller ionic radius of Al3+ (53.5 pm) vs Fe3+ (55.0 pm). This study demonstrates that Al doping plays an important role in the air stability and cycling stability for layered cathode materials, which offers an efficient strategy to optimize the material design for their practical application in NIBs.
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高影响因子
Advanced Energy Materials
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2026
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IF 25.5
Wenqi Zhao,Hai Lin,Wenhao Sun,Chengming Li,Yuepeng Guan,Weikun Wang,Yaqin Huang
Despite the high theoretical energy density (2600 Wh kg −1 ) of lithium–sulfur (Li–S) batteries, their practical application in low-altitude unmanned aerial vehicles is severely hindered by sluggish reaction kinetics and the severe shuttle effect of lithium polysulfides, making it difficult to meet the stringent demands for high-rate capability and high energy density. Single-atom catalysts (SACs) have emerged as a promising strategy to accelerate polysulfide conversion kinetics. However, conventional SACs often face challenges such as high preparation costs, complex synthetic processes, and catalyst poisoning due to excessively strong binding with sulfur species. To address these technical and economic limitations, this work focuses on developing cost-effective and efficient materials for large-scale energy storage. Graphitic carbon nitride (g-C 3 N 4 ), a low-cost, easily scalable material with abundant nitrogen coordination sites, was selected as the substrate to prepare an atomically dispersed SAC (Mn-CN). Benefiting from the unique half-filled 3d electronic configuration of the Mn atom, the catalyst directly establishes a robust “Mn–S and Li–N” dual-coordination mechanism. This specific interaction effectively activates the Li─S bond and substantially lowers the thermodynamic energy barriers, thereby improving the redox kinetics of polysulfide conversion. Consequently, the assembled Li–S batteries maintain a reversible capacity of 658 mAh g −1 at a high rate of 4 C and exhibit stable long cycling performance. Furthermore, the assembled 14 Ah-level pouch cell achieves an initial energy density of 547 Wh kg −1 and over 30 stable cycles. This work provides a practical approach for preparing cost-effective and efficient single-atom catalysts, supporting the industrial application of high-energy-density Li–S batteries.
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高影响因子
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
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2025
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IF 1.9
Yu-cheng Jiang,Bao-guang Zhu,Xiang-li Long
The oxidation of 1-(4-chlorophenyl)-pyrazolidin-3-one to 1-(4-chlorophenyl)-1H- pyrazol-3-ol by air can be accelerated by the Co(II)@AC catalyst prepared by loading Co(II) on activated carbon with wet impregnation method. ZnCl 2 solution has been used to treat activated carbon to ameliorate the catalytic ability of Co(II)@AC catalyst. The experiments indicate that the optimal catalyst is made by immersing activated carbon in 0.7 mol/L ZnCl 2 solution at 50°C for 6 h with a liquid/solid ratio of 30/1 (mL/g) followed being calcined at 700°C for 5 h at a heating rate of 5°C/min under N 2 protection. The 1-(4-chlorophenyl)-1H-pyrazol-3-ol concentration catalyzed by the catalyst loaded on the best carbon reaches 0.01953 kg/L, which is 27.56% higher than that catalyzed by the catalyst loaded on the original carbon. The characterization results manifest that the modification with ZnCl 2 enriches the porous structure and increases the acidic groups on the surface of activated carbon. The conversion of 1-(4-chlorophenyl)-pyrazolidin-3-one is mainly determined by the physical structure of the activated carbon while the selectivity to 1-(4-chlorophenyl)-1H- pyrazol-3-ol is largely affected by the chemical characteristics of the activated carbon.
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产品关联
DOI
高影响因子
Advanced Photonics Nexus
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2026
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IF 6.3
Jiale Chen,Yuxiao Xiong,Ye Lu,Weisheng Zhang,Kunjue Shang,Zhenzhen Li,Mingsi Lai,Haolin Chen,Zhouyi Guo,Bo Xu,Zhiming Liu
Tumor-associated macrophages, the largest population of immune cells in the tumor microenvironment (TME), dominate the complexity of TME due to their highly phenotypic plasticity, leading to personalized tumor progression, differentiated drug response, and tolerance. However, current methods for the interpretation of cellular heterogeneity involve destructive, cumbersome, and high-cost sample pretreatment procedures. Herein, we present surface-enhanced Raman scattering cytomics (SERS-Cytomics) as a non-destructive and low-cost approach for macrophage phenotyping and metabolic profiling. SERS-Cytomics is capable of providing the whole molecular fingerprints of living cells at a single-cell level. A deep-learning model enables accurate classification of three phenotypes of macrophages exceeding 95%. Further, the Shapley additive explanations analysis is adopted to screen the differential metabolic signals, where two metabolic biomarkers at 1071 (glucose) and 1440 (cholesterol) cm−1 display the maximum weight in the classification of M1 and M2 macrophages, respectively. Correlation explanation of SERS-Cytomics and transcriptomics reveals the involvement of the glycolytic pathway and lipid metabolism in M1 and M2 macrophages, respectively. Therefore, SERS-Cytomics enables an efficient and non-destructive analytical tool for cellular heterogeneity explanation at a single living cell level.
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产品关联
DOI
高影响因子
Journal of Nanophotonics
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2026
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IF 1
Zhi Sun,Yu Zhao,Tao Chen,Shuwen Zeng
In this study, we present a biosensor that employs a microfluidic approach to fabricate nematic liquid crystal (NLC) microspheres for the detection of phospholipase A1 (PLA1), a biomarker linked to Alzheimer’s disease (AD). We created uniform-diameter NLC microspheres utilizing a custom-designed microfluidic chip and functionalized them with phosphatidylcholine, which facilitates a radial arrangement. Following this, the NLC microspheres underwent a transition from a radial to a bipolar arrangement due to the hydrolysis of PC by PLA1. This method allows for direct observation of the detection process using a polarizing microscope. Image binarization is subsequently applied to enhance detection sensitivity, achieving a detection limit for PLA1 of 400 pg/μL. Furthermore, the detection time is reduced by more than twelve-fold compared with traditional methods. The rapid response capability of NLC microspheres demonstrates significant potential for the detection of various diseases and biomarkers. Our research establishes a foundation for the further development of a detection platform for the AD marker PLA1, paving the way for the creation of a low-cost, rapid, and portable diagnostic tool.
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产品关联
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高影响因子
OPTICAL ENGINEERING
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2013
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IF 0.88
Xiaoyi Lv,Furu Zhong,Zhenhong Jia,Liangliang Chen,Ji Ma,Hongyan Zhang,Zhuangqi Cao,Jun Zhou
We fabricated a one-dimensional nanoporous silicon photonic crystal on a silicon insulator substrate by a cost-effective electrochemical method as an optical biosensor for the detection of DNA hybridization. In the first step, a transfer matrix method was used to calculate the corresponding reflectivity spectrum for the design of nanoporous silicon photonic crystals. Then silicon-on-insulator-based photonic crystals were prepared by a novel simple electrochemical etching. Genes were hybridized inside the porous silicon (PS) pores by aminopropyltriethoxysilane and glutaraldehyde and detected through frequency resolved reflectance measurements. A detection sensitivity of 17.445 nm/μM is demonstrated with good specific detection. The linear response range covers a concentration range of antifreeze protein gene from 0.625 to 10.000 μM. This high responsivity indicates that the silicon-on-insulator-based PS photonic crystal has significant potential for application in biological micro-electro-mechanical-systems technologies.
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高影响因子
Journal of Photonics for Energy
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2021
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IF 1.836
Kai Gao,Youwen Liu,Honglie Shen
Radiative cooling as a spontaneous cooling phenomenon without any energy input has great research value and broad application prospects. However, environmental shields around the thermal emitter have a negative impact on the radiative cooling power of thermal emitters. A PTFE-Al was used as the radiative cooling thermal emitter, and the radiative cooling performances with different unilateral shielding angle were measured. The temperature difference of 7.4°C was achieved in an open and unobstructed environment, while the temperature difference of 2.8°C at the unilateral shielding angle of 90 deg. Furthermore, using the energy conservation model, we theoretically calculated the radiative cooling powers and the temperature differences of the thermal emitter under different shielding conditions, which were in good agreement with the experimental results.
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DOI
高影响因子
Journal of Photonics for Energy
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2026
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IF 2.5
Pengyu Fei,Yun Li,LingLing Jiao,Fan Cao,Zhouze Chen,Hongbin He,Ruoxuan Peng,XingYu Zhan,Jiancheng Zhou,Yitao Si,Naixu Li
Photothermal-assisted photocatalysis, which couples localized thermal energy with photogenerated charge carriers to overcome thermodynamic and kinetic limitations, has emerged as an effective strategy for solar-driven CO2 reduction. Herein, nanoflower-like NiO/ZnO p–n heterojunction spheres were rationally constructed via a simple hydrothermal calcination method to achieve efficient concentrated photothermal-assisted CO2 reduction. The unique nanoflower morphology provides abundant interfacial contact between NiO and ZnO, while the formation of the p–n heterojunction establishes an internal electric field that suppresses electron-hole recombination. Under concentrated irradiation (4.31 W·cm−2), the photothermal coupling effect reduces the apparent activation energy and enables the NiO/ZnO photocatalyst to deliver CO and CH4 production rates of 51.78 and 15.96 μmol·g−1·h−1, which are 7.92 and 9.61 times higher, respectively, than those obtained under nonconcentrated illumination. Photoelectrochemical measurements and in situ DRIFTS further reveal that the built-in electric field facilitates directional charge transfer from ZnO to NiO, thereby promoting CO2 adsorption and activation. We demonstrate an efficient photothermal-coupling strategy to construct high-performance catalysts for artificial photosynthesis and solar-to-fuel conversion.
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高影响因子
OPTICAL ENGINEERING
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2023
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IF 1.3
Guolong Li,Yulin Zuo,Weidi Shi,Liwen Hu,Longsheng Hu,Kun Zhu
The quasi-two-dimensional (quasi-2D) perovskite possesses good film coverage and high photoluminescence quantum efficiency, and exhibits a characteristic of high-level radiation recombination. However, the charge transferring from quasi-2D perovskites is not comparable to that of three-dimensional perovskites due to the insulating nature of large organic cations, thus limits the brightness of quasi-2D perovskite light-emitting diodes (PLEDs). In this work, phenylethylammonium bromide (PEABr) and formamidine hydrobromide (FABr) were strategically introduced as two spacer cations to form quasi-2D perovskite phase, thus weakened the van der Waals gap between individual perovskite layers. The enhanced coupling strength between each layer promoted the energy transfer efficiency and led to an increasing radiative recombination rate of the perovskite films. Meanwhile, an optimized molar ratio of PEABr: FABr: PbBr2 improved perovskite film morphology and passivated its defects, which reduced the nonradiative recombination loss of quasi-2D PLEDs. As a result, a maximum brightness of 32,368 cd m − 2 can be obtained for this kind of devices.
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高影响因子
OPTICAL ENGINEERING
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2022
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IF 1.352
Guolong Li,Mengyao Li,Yulin Zuo,Xinlei Suo,Hang Su,Yunzheng Wang,Longsheng Hu,Weidi Shi,Liwen Hu
Serious nonradiative recombination and decomposition of perovskite film exist in MAPbBr3-based perovskite light-emitting diodes (PeLED) due to the residue of lead atoms from an incomplete reaction, thereby limiting the efficiency of PeLEDs. Excessive Methylammonium bromide (MABr) added into the precursor of methylammonium lead bromide (MAPbBr3) can solve this problem. However, how the excessive MABr self-passivates perovskite films improves the performance of PeLEDs requires further examination. The self-passivated perovskite film by overdoping MABr was investigated by varying stoichiometric ratios of perovskite precursors. It was found that, as the content of MABr increased, the interaction between free charge and longitudinal optical phonons was enhanced, thus reducing the exciton binding energy, resulting in emission broadening and blue shift of the PL spectra. With the molar ratio of PbBr2 and MABr of 1:1.315, the PeLED achieved a good trade-off between the brightness and the stability, thus demonstrating a maximum brightness of 9981 cd m − 2 and a lifetime of 14 min, with a maximum current efficiency of 6.59 cd A − 1.
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高影响因子
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