ACS Applied Nano Materials
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2025
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IF 5.5
Haodong Zhang,Xin Ye,Shaoyang Wu,Fan Wu,Yiming Zhang,Zhengping Ding,Yurong Ren,Peng Wei
As a mainstream commercial cathode material for lithium-ion batteries (LIBs), LiFePO4 (LFP) is still limited by its inherently low electronic conductivity and slow diffusion kinetics. Therefore, a unique and innovative synthesis strategy must be devised to overcome these deficiencies. Hereby, we successfully synthesized N,F co-doped carbon encapsulated hollow LFP nanoshuttles (LFP-NFC) using an iron-based metal–organic framework (Fe-MOF) as the precursor. Benefitting from the hollow and porous structure derived from Fe-MOF, as-synthesized LFP-NFC effectively shortens the lithium-ion diffusion path and accelerates the ion diffusion speed. Moreover, the carbon layer doped with N and F heteroatoms induces more active sites for lithium storage and improves the electronic conductivity. The optimized LFP-NFC exhibits excellent electrochemical performance with a specific discharge capacity of 162.74 mAh g–1 at 0.1 C and a superior rate capability (102 mAh g–1 even at 10 C).
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ACS Applied Materials & Interfaces
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2015
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IF 6.723
Feng Liu,Yuecheng Cui,Lei Wang,Hongwei Wang,Yuqi Yuan,Jingjing Pan,Hong Chen,Lin Yuan
It is important to effectively maintain and modulate the bioactivity of protein-nanoparticle conjugates for their further and intensive applications. The strategies of controlling protein activity via “tailor-made surfaces” still have some limitations, such as the difficulties in further modulation of the bioactivity and the proteolysis by some proteases. Thus, it is essential to establish a responsive protein-nanoparticle conjugate system to realize not only controllable modulations of protein activity in the conjugates by incorporating sensitivity to environmental cues but also high resistance to proteases. In the work reported here, Escherichia coli (E. coli) inorganic pyrophosphatase (PPase) and poly(N-isopropylacrylamide) (pNIPAM) were both fabricated onto gold nanoparticles (AuNPs), forming AuNP-PPase-pNIPAM conjugates. The bioactivity-modulating capability of the conjugates with changes in temperature was systematically investigated by varying the molecular weight of pNIPAM, the PPase/pNIPAM molar ratio on AuNP, and the orientation of the proteins. Under proper conditions, the activity of the conjugate at 45 °C was approximately 270% of that at 25 °C. In the presence of trypsin digestion, much less conjugate activity than protein activity was lost. These findings indicate that the fabrication of AuNP-protein-pNIPAM conjugates can both modulate protein activity on a large scale and show much higher resistance to protease digestion, exhibiting great potential in targeted delivery, controllable biocatalysis, and molecular/cellular recognition.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2025
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IF 7.7
Yujun Guo,Jiayi Qu,Zhenkai Zhang,Zhenyue Liu,Chen Yue,Qiuying Chen,Zhiguo Yang,Yang Mu,Xiaoning Wang,Davoud Dastan,Xi-Tao Yin,Xiaoguang Ma
In this paper, ZnS/NiO p-n heterojunction microspheres were fabricated via a two-step hydrothermal approach. The sensing properties of composites with different ZnS contents were investigated by regulating the ratio of Zn. When containing 25 mol% ZnS, the ZnS/NiO nanosphere sensor achieved a response of 125. The response was improved by a factor of about 83.3 compared to pure NiO. The sensor functions optimally at a temperature of 225 ℃, and it possesses excellent selectivity, a rapid response/recovery time (49/44 s), and long-term stability. Therefore, this paper provides a hydrothermal method to prepare ZnS/NiO nanocomposites with heterojunction, specifically designed to detect n-butanol. After performing a series of characterizations, it was determined that the enhancement of the gas-sensitive properties could be related to the construction of ZnS/NiO heterojunctions and the increase in oxygen vacancies.
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ChemistrySelect
·
2025
·Vol. 10
·期 6
·e202405266
·
IF 2
Boao Du,Lihui Zheng
Graphical This research focuses on supercapacitor electrode materials. Using Rhus typhina leaves as raw materials, it innovatively employs a mixed activator of K 2 CO 3 and ZnCl 2 Through a two-step carbonization-activation method, O/N self-doped TLMPC-x is prepared. Among them, TLMPC-1.0 exhibits outstanding performance, with a large specific surface area, high specific capacitance, and strong cycle stability, demonstrating promising application prospects. This research focuses on the field of supercapacitor electrode materials. Using Rhus typhina leaves as the starting material, it innovatively applies a mixed activator composed of K 2 CO 3 and ZnCl 2 and successfully prepares O/N self-doped leaf-derived porous carbon electrode materials (TLMPC-x) through a precisely controlled two-step carbonization-activation method. The aim is to develop a new type of electrode material that combines excellent performance, environmental friendliness, and the advantage of low cost, and to deeply explore the mechanism of the effect of the activator ratio on the specific surface area and electrochemical performance of the materials. Among them, TLMPC-1.0 remarkably exhibits a specific surface area as high as 2827.9 m 2 g −1 . Its abundant and multi-level pore structure complements well with the diverse heteroatom doping. During the electrochemical performance test in the KOH electrolyte system, the specific capacitance of this material excellently reaches 335.3 F g −1 , and the capacitance retention rate is stably maintained at 69%. When the power density is 250 W kg −1 , an energy density of 9.45 Wh kg −1 can be achieved. Moreover, after 20 000 charge–discharge cycles, its capacitance retention rate is still as high as 96.4%, demonstrating extremely excellent electrochemical performance and ultra-stable cycle stability.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Xue Zhang,Chunxia Wu,Ye Bu,Ying Liang,Zhitong Wang,Jing Li,Daoxiong Wu,Xinlong Tian,Peilin Deng
Exploring efficient and durable methanol oxidation reaction (MOR) electrocatalysts is crucial for the industrialization of direct methanol fuel cells. Herein, we designed MOR electrocatalyst of PtRu/Ni-N-C, in which PtRu nanoclusters (PtRu NCs) are loading on nitrogen-doping carbon support anchoring Ni single atoms (Ni-N-C). Compared with PtRu NCs and Pt/C, PtRu/Ni-N-C exhibits more excellent MOR activity with 2050 mA mg pt -1 and tougher anti-CO toxicity over 6000 s CA test, proving that the synergetic effect of nanoclusters and single atoms support enhance MOR activity and resistance to anti-CO toxicity. The fine spectroscopy analysis and density functional theory (DFT) calculations demonstrate that the strong metal-support interaction (SMSI) between nanoclusters and single atoms, facilitating the electron transfer of about 0.4 e from PtRu NCs to the Ni-N-C support, effectively reduces the d -band center of Pt to weaken the adsorption capacity of *CO and *COOH intermediates. Moreover, the synergistic sites derived PtRu NCs coupling Ni single atoms accelerate *OH adsorption, promoting the adjacent *CO removal. This work offers deep insight into the SMSI effect between nanoclusters and single atoms support to design the efficient Pt-based MOR electrocatalysts.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
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IF 5.8
Kuikun Gu,Xinyue Du,Xueying Song,Yu Wang,Zhongbao Luo,Xiaodong Yang,Mingzhe Zhang
The ternary metal oxides that combine two different metal cations is an interesting candidate as sensing material based on their interesting properties. Hence, ordered dendrite InWO 4 was successfully synthesized via a hydrothermal method, followed by the construction of an InWO 4 -rGO heterojunction to enhance detection capability for triethylamine (TEA) gas. The synthesized product underwent morphology and elemental composition analysis using various techniques. Gas sensing experiments revealed that the InWO 4 -rGO gas sensor, operating at the optimal temperature of 220 ℃, displayed a significantly improved response to 100 ppm TEA, with a high value of 59.5, in comparison to the pure InWO 4 gas sensor (11.5 at 250 ℃). Additionally, the recovery time was reduced from 184 s to 122 s. Based on experimental data and gas sensing reaction theory, this study attributes the improved gas sensing performance to the formation of p-n heterojunction, a larger specific surface area and rGO's catalytic effect. This study not only introduces a novel addition to the gas sensing material family but also promotes the development of advanced gas sensors.
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Catalysis Science & Technology
·
2024
·Vol. 14
·期 23
·6814-6823
·
IF 4.4
Xihui Yang,Zekun Li,Zikun Yang,Dapeng Meng,Zhao Wang
The development of efficient and stable bifunctional non-noble metal catalysts for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is essential for electrochemical water splitting. In this study, CoNi@C core–shell structure catalysts derived from ZIF-67 were synthesized through high-temperature calcination. The hydrophilic carbon shell inhibits the oxidation of Co and Ni and enhances the activity and stability of the water splitting reaction. CoNi serves as the active site of the reaction, while the doped nitrogen further promotes the electrocatalytic reaction. The synthesized Ni1Co10/C catalyst exhibits high bifunctional performance, with low overpotentials at 100 mA cm−2 for the OER (380 mV) and HER (357 mV), and a high double-layer capacitance (54 mF cm−2). Moreover, the Ni1Co10/C catalyst serves as an effective cathode for water splitting in a two-electrode system, demonstrating a stable cell voltage of 2.05 V and maintaining a constant catalytic current of 100 mA cm−2 over 24 hours. DFT calculation showed that the active site of the OER and HER was Co.
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FUEL
·
2024
·
IF 6.7
Haojie Hu,Shuofan Li,Yuanfeng Wang,Ruochen Yang,Jianxun Wu,Weilai Zhang,Chen He,Han Li,Yahe Zhang,Di Zhu,Quan Shi
Petroleum acids are widely present in crude oil and are important indicators of generation and preservation of the crude oil. However, it is difficult to analyze these compounds using gas chromatography due to their strong polarity and low volatility. In this work, we established a method to reduce petroleum acids into corresponding hydrocarbons using n -butylsilane as the reducing agent. The reduced products of the acids from three crude oils with different geological origin were analyzed by gas chromatography-mass spectrometry and high resolution Orbitrap mass spectrometry coupled with electrospray ionization. Various hydrocarbons with specific biomarker carbon skeletons were identified in the reduced products and compared to the corresponding compounds in the saturates of the crude oils, which provides molecular clues for the understanding of the geochemical formation mechanism of petroleum acids. The results show large difference in molecular composition of petroleum acids in different crude oils. The Liaohe acids were composed of fatty acids which should be primary acids in source rock or derived from low-maturity kerogen. In contrast, the Xinjiang and Shengli acids were dominated with naphthenic acids. Xinjiang naphthenic acids showed good consistency in carbon skeleton and carbon number with the saturates. This indicates that these naphthenic acids originate from the bio-oxidation and degradation of cycloalkanes, which can also be further decarboxylated and degraded to generate cycloalkanes. Abundant 8,14-secohopanes and 25-norhopanes and corresponding acids were detected in Shengli crude oil. The compositional differences between the acids and corresponding hydrocarbons suggests that biodegradation occurs preferentially on large molecules with long side chains and has structural selectivity on the isomers. The results implies that 25-norhopanic acids seems to be the intermediates for the biodegradation of hopanes to 25-norhopanes.
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Lipids in Health and Disease
·
2024
·
IF 3.9
Shuting Wang,Huasong Bai,Tong Liu,Jiayi Yang,Zhanzhong Wang
Omega-3 polyunsaturated fatty acids (n-3 PUFAs), mainly including α-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), possess antioxidant properties and play a crucial role in growth and development. However, the combined effects of ALA, EPA, and DHA at different concentrations have rarely been reported. This work explored the effects of EPA, ALA, and DHA on the viability and antioxidant capacity of mouse hepatocytes, with the objective of enhancing the antioxidant capacity. Within the appropriate concentration range, cell viability and the activity of glutathione S-transferase, superoxide dismutase, and catalase were increased, while the oxidation products of malondialdehyde and the level of intracellular reactive oxygen species were obviously reduced. Thus, oxidative stress was relieved, and cellular antioxidant levels were improved. Finally, response surface optimization was carried out for EPA, ALA, and DHA, and the model was established. The antioxidant capacity of the cells was highest at EPA, ALA, and DHA concentrations of 145.46, 405.05, and 551.52 µM, respectively. These findings lay the foundation for further exploration of the interactive mechanisms of n-3 PUFAs in the body, as well as their applications in nutraceutical food. Supplementary Information The online version contains supplementary material available at 10.1186/s12944-024-02202-0.
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ACS Sensors
·
2025
·
IF 9.1
Xiaolong Sun,Yue Hou,Zheng Zhu,Qianfeng Ding,Wenjie Zhou,Zhanglong Xia,Sijia Yan,Yong Liu,Qingqing He,Yang Yang,Ziyu Wang
Thermoelectric textiles have garnered significant attention in energy harvesting and temperature sensing due to their comfort and reliable long-term power generation capabilities. However, existing thermoelectric textiles rarely realize antibacterial, high output performance, and sensing capabilities simultaneously. Here, we present a facile and scalable method for fabricating n-type silver selenide (Ag2Se) cotton threads with exceptional antibacterial, high power output, and advanced sensing capabilities. The Ag–Ag2Se segmented structures are prepared using the segmented selenization method. Subsequently, a thermoelectric textile consisting of 50 pairs of p–n legs is fabricated, which can generate a power density of 500 μW m–2 at a temperature difference of 30 K, and it can provide an output voltage of 24.7 mV when worn on the arm at room temperature. The textile-based sensor exhibits temperature detection (0.7 K) and a response time (2.49 s). Integrating Ag2Se cotton threads onto textiles enables the utilization of multipixel touchpads for writing and communication. Additionally, these sensors can be incorporated into gloves to accurately detect the surrounding objects’ temperatures. This thermoelectric cotton thread not only facilitates energy harvesting but also establishes a solid foundation for widespread application in multifunctional textile electronics.
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ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Kun Li,Chengjie Duan,Weitao Mao,Dongliang Wang,Yumeng Liang,Wenbo Ye,Guangke He,Xiang Liu
A direct and efficient synthesis of N-methyl-1,2,3,4-tetrahydroquinolines (MTHQs) is achieved through the one-pot reductive N-methylation of quinolines. The SnOx-decorated Pt/Al2O3 (Pt-SnOx/Al2O3) catalyst proves to be highly effective in the transformation from quinolines to MTHQs, using methanol as the exclusive source for hydrogen (H) and methyl (CH3), without the addition of additional bases or additives. Mechanistic and kinetic studies reveal a tandem reaction pathway: (1) the dehydrogenation of methanol, (2) reduction of quinolines to 1,2,3,4-tetrahydroquinolines (THQs), and (3) N-methylation of THQs to MTHQs, with the dehydrogenation of methanol identified as the rate-determining step. Characterization and catalytic performance results demonstrate that SnOx modifies the morphology and electronic properties of Pt-based metal active sites, which dramatically facilitates the cleavage of O–H and less reactive C–H bonds in methanol, and maintains a delicate balance between methanol dehydrogenation and reductive N-methylation of quinolines, thus obtaining a high reactivity for the total transformation.
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APPLIED CATALYSIS A-GENERAL
·
2024
·
IF 4.7
Xinzheng Ma,Jingyi Chen,Ziang Zhao,Ronghe Lin,Xiaoling Mou,Yihui Li,Li Yan,Hejun Zhu,Yunjie Ding
Solvent-free oxidation of benzyl alcohol on bimetallic Pt-Bi catalysts supported on activated carbon (AC), carbon black, carbon nanotube, and N-doped carbon (NC) was studied. While the dispersions of both metals significantly increased on all the bimetallic catalysts, the composition and distribution of the metal species were strongly influenced by different supports. The formation of PtBi alloy was favored on most supports except AC, where aggregation of Bi was observed. Moreover, the oxidation activity was found to closely link to the surface Bi:Pt ratios. Extensive optimizations on PtBi/NC catalyst in batch and flow reactors yielded impressive benzaldehyde yields of 86 % and 70 %, respectively, under mild conditions, which are comparable or even superior to the performances of most state-of-the-art catalysts. Notably, a 96-hour continuous test in a trickle-bed reactor demonstrated stable operation without catalyst deactivation, demonstrating the promising industrial potential.
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