MICROCHEMICAL JOURNAL
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2023
·
IF 4.8
Meiyi Liu,Weilian Zheng,Yi Yang,Ge Shi,Yining Li,Shuai Zhou,Yijian Zhao,Zhiyi Yao
2,4,6-trinitrophenol (TNP) is an environmentally deleterious substance with high toxicity and explosibility. It is of great significance for environmental protection and public health to establish a rapidly on-site monitoring method for perilous TNP. Current methods for detecting TNP mainly rely on traditional laboratory analysis lacking rapid detection through intelligent modes. Herein, we construct a smartphone recognition based fluorescence sensing system via the supramolecular assembly of a perylene probe to quantify TNP. The sensing platform consists of a fluorescent probe based on quaternary ammonium functionalized perylene (PDI-BTMA), as the TNP-response recognition element, and smartphones as optical signals receptors bringing simpleness, celerity, and portability for TNP monitoring. The sensor reveals dual output signals of color and fluorescence in response to TNP. The results show that the optical responses of PDI-BTMA can be attributed to the formation of the supramolecular complex (PDI-BTMA/TNP) via non-covalent interactions including static electricity, hydrophobic interaction, charge transfer, and π-π stacking. It shows a wide linear range for TNP of 200–1200 nM with a detection limit of 9 nM. In addition, we successfully made portable PDI-BTMA fluorescence paper. The RGB value of fluorescence color was also collected by using the smartphone-assisted sensing platform, and the G/B channel values show a linear relationship with TNP concentration in 0.1–50 μM, with the lowest detection concentration of 48.4 nM. Additionally, it could be successfully utilized for quantitative TNP monitoring in environmental water and soil samples, which achieved a greater recovery rate in the range of 99–110%. This research integrating the PDI-BTMA probe with a smartphone firstly presents a new strategy for real-time and on-site monitoring of TNP in the environment.
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ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Yupeng Liu,Bingzhe Wang,Yunsen Zhang,Jia Guo,Xiaoyi Wu,Defang Ouyang,Shi Chen,Yeqing Chen,Shuangpeng Wang,Guichuan Xing,Zikang Tang,Songnan Qu
Carbon dots (CDs) are a burgeoning star of luminescent carbon-based nanomaterials with emerging interest for various applications. Luminescence from the sp 2 -conjugated domains in the carbon cores is considered to be the intrinsic bandgap emission of CDs, whereas the relationship between them remains poorly understood. Simultaneously, the solvent relaxation of water molecules will quench the fluorescence of CDs, thus, obtaining strong luminescence from CDs aqueous solutions remains a great challenge. Herein, a facile one-step spatial-confined cross-condensation method that uses a heat-induced self-foaming process in ambient pressure has been developed to synthesize highly luminescent CDs with unprecedented photoluminescence quantum yield (PLQY) over 97.2% in water. The unique precursor-derived cross-arranged perylene skeleton in the cores hinders π–π stacking, while the hydrophobicity of the conjugated units mitigates solvent relaxation by water molecules, resulting in near-unity PLQY in aqueous solutions, enabling this to demonstrate the first optically pumped green lasing emission in the CDs aqueous solution. Moreover, a biomaterial-based white light emitting diode is fabricated using the CDs-stained silks as a fluorescence conversion cover to realize a high luminous efficiency of 60.7 lm W −1 with CIE color coordinate of (0.33, 0.35).
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JOURNAL OF POWER SOURCES
·
2017
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IF 6.395
Penghao Lu,Fei Ding,Zhibin Xu,Jiaquan Liu,Xingjiang Liu,Qiang Xu
A novel glass-ceramic electrolyte of (100-x)(70Li 2 S-30P 2 S 5 )-xLi 2 ZrO 3 (x = 0, 1, 2, 5) is successfully prepared by a vibratory ball-milling method and followed by a heat-treatment process. Composition of the ternary sulfide electrolyte and the heat-treatment process are optimized by physical characterizations and electrochemical measurements. The testing results show that the optimal substitution quantity of Li 2 ZrO 3 into the Li 2 S-P 2 S 5 electrolyte substrate is 1 mol %. An appropriate heat-treatment temperature of 99(70Li 2 S-30P 2 S 5 )-1Li 2 ZrO 3 glass-ceramic electrolyte is 285 °C. Among the as-prepared ternary electrolyte samples, 99(70Li 2 S-30P 2 S 5 )-1Li 2 ZrO 3 glass-ceramic electrolyte may exhibit the highest conductivity of 2.85 × 10 −3 S cm −1 at room temperature, which is much higher than that of the 70Li 2 S-30P 2 S 5 glass-ceramic electrolyte. Compared to that of the all-solid-state lithium-ion battery of LiCoO 2 /70Li 2 S-30P 2 S 5 /In-Li, discharge capacities of all-solid-state lithium-ion battery of LiCoO 2 /99(70Li 2 S-30P 2 S 5 )-1Li 2 ZrO 3 /In-Li may increase 41.0% at the 10th charge-discharge cycle and 21.9% at the 50th charge-discharge cycle, respectively. Furthermore, electrochemical impedance spectroscopy (EIS) analyses of all-solid-state lithium-ion batteries reveal that addition of Li 2 ZrO 3 into the Li 2 S-P 2 S 5 electrolyte substrate may decrease the interfacial resistance between the electrodes and solid electrolyte . The improvement of electrochemical performances of 99(70Li 2 S-30P 2 S 5 )-1Li 2 ZrO 3 glass-ceramic electrolyte is ascribed to both the stable crystal structure and a high lithium-ion diffusion coefficient of Li 2 ZrO 3 .
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2019
·Vol. 30
·期 18
·17440-17446
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IF 2.195
Wang Tianxiong,Meng Xianquan
We try to synthesize In x Ga 1−x Sb nanowires on silicon (100) substrate using InSb and GaSb as source materials and we succeeded. Au film was used as catalysts. The experiment is simple and repeatable. The diameter of the grown nanowires is 60–200 nm and up to 10 microns in length. The grown nanowires have good crystallinity. Due to the doping of indium, we found that the XRD peaks of nanowires were shifted. We have fabricated fully nanostructured device using ultra-long Ag nanowires as electrodes for the I–V characteristic study, and found that the device has photoresponse characteristics and the I–V characteristic curve was asymmetric, we explain that it was due to the asymmetry of this fully nanostructured devices.
研究领域:
材料科学
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纳米科技
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半导体物理
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固体电子学
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晶体生长
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高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Yuqin Su,Hengyang Xiang,Kun Zhang,Ying Zhou,Si Lan,Ruifeng Lu,Haibo Zeng
Perovskite quantum dots (PQDs) show promising potential in the optoelectronic field, but their commercial application is limited by the scalability in laboratory scale and complicated synthesis in an inert atmosphere, especially in I-based red-emission PQDs. The PQDs are disturbed by the performance decrease in the scalable synthesis caused by the trap states from weakly-bonded ligand loss and uneven nucleation/growth from the complicated injection process. Here, a 100-fold scalable (800 mL) and gram-level (2.19 g) synthesis of CsPbI 3 pure-red PQDs is achieved in ambient air. This is realized by a strongly-coordinated dual-ligand strategy with phosphorus-oxygen groups to interact strongly with Pb 2+ and protect PQDs from moisture/oxygen, ensuring the ambient air scalable synthesis. The 100-fold scaled-up PQDs show no significant emission shift or broadening (ΔPL = 0.7 nm, ΔFWHM = 0.8 nm) and remain over 80% PLQY. Also, pure-red light-emitting diode (LED) based on the scalable PQDs reserves 86.3% EQE of LEDs based on small-scale PQDs, showing the excellent batch consistency and commercial potential of PQDs.
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JOURNAL OF SOLID STATE CHEMISTRY
·
2026
·
IF 3.2
Yongwei Li,Shuting Fan,Zhihao Fang,Xiangru Zeng,Jinting Jiang,Fangfang Liu,Xuening Lun,Chengjie Li
A simple mineralizer regulation strategy is developed to tune the structure of hydrothermal MIL-100(Fe). • NaHCO 3 enhances the surface area of MIL-100 (Fe), affording superior XO adsorption performance. • Synergistic pore adsorption, hydrogen bonding, Fe 3+ coordination and π-π stacking enable efficient XO removal. Metal-organic frameworks (MOFs) are promising crystalline porous solids, whose functional properties are highly dependent on their crystallinity, defect states and pore characteristics. In this work, hydrothermal synthesis was employed to prepare MIL-100(Fe) materials modulated by three different mineralizers: sodium carbonate, acetic acid, and sodium bicarbonate; mineralizer-free pristine MIL-100(Fe) was used as the reference sample. The addition of mineralizers effectively modulates the crystal structure and porosity of MIL-100(Fe). All mineralizer-modified samples exhibit larger specific surface area compared with the pristine material. Among them, NaHCO 3 -regulated MIL-100(Fe) achieves the best adsorption performance toward xylenol orange (XO), which originates from its optimized porous structure. Adsorption experimental data fit well with the pseudo-second-order kinetic model and Langmuir isotherm model. The maximum monolayer adsorption capacity calculated by the Langmuir model reaches 155.28 mg/g, which is competitive with many reported adsorbents. Synergistic adsorption mechanisms, including pore-filling effect, hydrogen bonding, Fe 3+ complexation and π-π stacking interactions, have been elucidated. This work presents a facile mineralizer-mediated strategy for tuning the solid-state structural features of MIL-100(Fe), offering experimental insights for the structure-performance optimization of Fe-based MOF solids. Download: Download high-res image (357KB) Download: Download full-size image
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Journal of the American Chemical Society
·
2026
·
IF 16.6
Weiyi Guo,Shuai Yao,Xueling Xu,Taotao Lu,Chaochao Xie,Yaxuan Zhang,Jiahao Wang,Hongliang Chen,Xuefeng Tan,Yangyang Shen,Haixing Li
Atomic-scale manipulation of chemical bond cleavage and formation offers significant advantages of extending the reaction controllability to the single-molecule regime and enabling the elucidation of fundamental reaction mechanisms. Herein, we drive reactions between two chemical species, open-shell monomeric radicals and closed-shell dimers in single-molecule junctions. Both monomers and dimers form a C−Au covalently linked highly conducting junction in situ, with the conductance being about 100× higher than that of the dimer junction. First-principles calculations suggest that the substitution groups on the carbon in the C(sp3)−Au linkage bond effectively tunes the molecular junction conductance. Notably, captodative radicals enable the formation of weakly bonded spin–spin interactions in solution, yielding diamagnetic dimers, and we can reversibly switch between the dimer and the weakly bonded radical pair by mechanically controlling the gap between the two electrodes.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
·
IF 9.2
Qiye Lu,Jing Liu,Guanyi Chen,Beibei Yan,Zhanjun Cheng,Weiming Yi
Conventional biodiesel production relies on external heating, requiring high temperatures and strict control over system water content. This work prepared a magnetic lignin-based heterogeneous acid catalyst Fe 3 O 4 -LS/100-Al using sodium lignosulfonate as support via co-precipitation and impregnation, with Lewis acid sites, and applied it in electrolysis-assisted esterification for biodiesel. The catalyst showed a specific surface area of 115.63 m 2 /g and saturation magnetization of 29.98 emu/g, enabling efficient acid loading and rapid magnetic separation. Under RSM-optimized conditions (catalyst of 6.8 wt%, MOAMR of 12.5:1, voltage of 45.4 V, water content of 4.7 wt%), oleic acid conversion reached 95.25%. Low activation energy (36.04 kJ/mol) confirmed high catalytic activity, and 71.38% conversion was retained after seven cycles. Results prove electrolysis assistance enables efficient, ambient-temperature biodiesel synthesis.
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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Tianyi Huang,Chenxian Zhao,Danyang Zhao,Yujun Wang,Guangsheng Luo
The exposure of crystal planes is a crucial determinant of support activity and effective metal anchoring in catalysis. Herein, we develop an efficient process for designing the crystal planes of alumina microspheres. The mechanism involves hydrogen bond adsorption between octanol and boehmite, alongside the hindrance effect of hydrophobic carbon chains on hydration layer, to achieve effective exposure of the γ-Al 2 O 3 (100) crystal plane. HRTEM and 27 Al NMR analyses confirm that the proportion of exposed γ-Al 2 O 3 (100) plane increases to 59% following octanol directional adsorption. Moreover, microfluidic field measurements demonstrate that the microchannel enhances mass transfer to facilitate octanol directional transmission and hydrogen bond adsorption within the sol droplet. This approach ultimately enables integrated reshaping of alumina microspheres with a 2.7-fold increase in the γ-Al 2 O 3 (100) plane exposure. This study provides an effective operational paradigm for achieving support crystal plane exposure in industrial applications.
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Nature Communications
·
2026
·
IF 18.1
Zhao Jun,Yang Jianlong,Wang Duanda,Zhang Huanrong,Jia Qianqian,Zhang Lei,An Zhenguo,Xue Mianqi,Xie Haijiao,Ma Wangjing,Zhang Lu,Zhao Sui,Tang Junwang
The catalytic upcycling of plastic mixtures into H 2 and carbon nanotubes (CNTs) represents a transformative strategy for advancing plastic management and the circular economy. Herein, an in-situ constructed high-performance FeNi/Ni/C catalyst combined with prompt microwave catalysis enables efficient conversion of LDPE-PVC, LDPE-HDPE-PP-PS-PVC-PTFE and landfilled waste mixture into valuable H 2 and CNTs, resulting in near-quantitative atom economy (i.e., H 2 and carbon efficiencies are nearly 100%) together with H 2 and CNTs yields reaching >922 mmol g -1 catalyst and >10600 mg g -1 catalyst , respectively. Furthermore, this microwave catalysis strategy presents an excellent stability (>35 cycles) via Cl/F-based regeneration and energy efficiency (80% reduction vs. traditional thermal catalysis), alongside a high turnover number of 107.6 mol carbon mol -1 NiFe . Fundamentally, the Ni species contribute to C-H breaking, and Fe is beneficial for CNT formation during plastic decomposition. Here, we show a cost-effective platform for upcycling of chlorinated/fluorinated plastic mixtures, aligning with resource circularity objectives.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Yongpan Shan,Yajie Ma,Changcai Wu,Xiangliang Ren,Xianpeng Song,Dan Wang,Hongyan Hu,Xiaoyan Ma,Yan Ma
Control release of pesticides based on target plant characteristics is highly desirable for improving the effective utilization rate and reducing non-target organism risks. Here, the controlled release formulations (Cu-CS@IN@MIL-100 (Fe)) were successfully prepared by employing MIL-100 (Fe) as the carrier material, indoxacarb (IN) as the model pesticide, and chitosan (CS) as a coating to chelate copper ions by chemical crosslinking. The prepared Cu-CS@IN@MIL-100 (Fe) had an acceptable loading content (36.25 %). The introduction of CS and copper ions endowed it with sustained release properties under weak acidity conditions like cotton leaves. The laboratory bioassay experiments showed that Cu-CS@IN@MIL-100 (Fe) had practical good insecticidal activity (LC 50 = 4.936 mg/L) in controlling Helicoverpa armigera larvae. For long-term control efficacy experiments, after 14 days of application, the Cu-CS@IN@MIL-100 (Fe) treatment (73 %) mortality of Helicoverpa armigera larvae was significantly higher than the 15 % indoxacarb suspension concentrates (SC) treatment (27 %). Moreover, Cu-CS@IN@MIL-100 (Fe) had no adverse effect on cottonseed germination and the acute toxicity to Chrysopa pallens larvae was significantly lower than IN SC. Therefore, MIL-100 (Fe) could be used as an ecological safety carrier for pesticide delivery to improve IN effective utilization and reduce non-target organism risks.
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Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 11
·5627-5635
·
IF 11.9
Xiaoxiao Yu,Ke Gong,Shuyao Tian,Guangpeng Gao,Jing Xie,Xu-Hui Jin
Designing stable eco-friendly materials that use abundant H2O as the hydrogen and electron source for photocatalytic conversion of CO2 presents a promising route to confronting climate change, but it remains challenging. In this work, we demonstrated that the strategy of converting imine-linkers into 4-carboxyl-quinoline linkages in covalent organic frameworks (COFs) could be used to prepare efficient crystalline porous polymeric photocatalysts for CO2 reduction using H2O as the electron donor. In particular, QL-COF, featuring hydrophilic 4-carboxyl-quinoline linkages, was found to show improved adsorption of H2O and CO2 compared with LZU1-COF which was constructed via imine linkages. Theoretical studies indicated that hydrophilic –COOH groups presented strong binding with H2O molecules. Importantly, the pre-adsorbed H2O molecules were found to further enhance the binding of CO2 molecules in the pores. The fully conjugated framework of QL-COF improved the separation and transfer of photogenerated charge carriers, leading to excellent activity and photostability for photoreduction of CO2 with gaseous H2O. Ultimately, QL-COF reached a high selectivity of 99.3% for CO generation (156 μmol g−1 h−1) under simulated sunlight irradiation.
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