SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Zheng Kong,Lun Lu,Chao Zhu,Junjie Xu,Qile Fang,Renlan Liu,Yi Shen
PFOA has caused enormous environmental risks with recalcitrance, toxicity, and bioaccumulation, while the degradation of PFOA is still a challenging topic related to the high energy of C F bonds. However, the conventional methods such as biological oxidation, electrochemical oxidation and membrane separation have their own drawbacks. Actually, adsorption-photocatalysis is considered a potential treatment due to effectiveness and thoroughness. Instead of preparing the composite material by adding TiO 2 , the method to in-situ grow TiO 2 in the MOF (MIL-125(Ti)) was carried out, which achieved narrowed band gap and improved the photoresponse ability, simultaneously. Furthermore, the surface F-functionalized MOF provided more available special adsorption sites for PFOA enrichment. Linked fluorine groups not only improved the adsorption capacity (185.151 μmol/g) but also enhanced the photocatalytic rate (1.221 E −4 /s) by altering the electronic density of VB and CB. The constructed F-TiO 2 @MIL-125 stepwise degraded PFOA through a dominant ·OH attack pathway and maintained the oxidize ability of h + to PFOA. As a bifunctional material for adsorption and photocatalysis , F-TiO 2 @MIL-125 was able to be applied in various water environments repeatedly, which has unlimited environmental application potential.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
INORGANICA CHIMICA ACTA
·
2023
·
IF 2.8
Shun-Ping Zhao,Xu-lin Cui,Qiang-hong Yu,Yu Guo,Jie Wang,Heng Xu
Hybrid materials of lead halide have numerous structural variations and superior optoelectronic capabilities. The hybrid crystal 1 prepared by the hybrid halogen method has the chemical formula [ p -F-Bz-1-APy][Pb 2 Br 3.2 I 2.8 ] (C 24 H 20 F 2 N 4 Br 3.2 I 2.8 Pb 2 ) ( p -F-Bz-1-APy = p -fluoro-phenyl-1-aminopyridinium) with a space group of P 2 1 / c , two unequal [F1/F2-Bz-1-APy] + cations, and a heterogeneous double-chain inorganic layer made of edge-sharing Pb 2 Br 3.2 I 2.8 octahedron. The two cations adopt a lower-energy and more stable structural configuration, according to potential energy scans of the dihedral angles of the benzene and pyridine rings. The stacked structures are held together by a variety of intermolecular interactions, including hydrogen bonds (anion-cation, cation-cation), stacking (cation-cation), and the rare C-F2…π halo-bond. Hirshfeld surface analysis quantifies intermolecular interactions, revealing that interactions involving Br atoms and [F2-Bz-1-APy] + cations contribute more to the formation of stacking structures than interactions involving I atoms and [F1-Bz-1-APy] + cations. The logarithmic derivative method clearly reveals two dielectric relaxation processes, one in the low frequency region (<10 2 Hz) masked by the DC conductance and one in the high frequency region (10 2 -10 7 Hz), which were then fitted by the Arrhenius formula to obtain their corresponding activation energies of 77.75 KJ/mol and 144.14 KJ/mol, respectively. Our research offers inspiration and a framework for the development of novel lead halide-based optoelectronic materials and dielectric analyses.
研究领域:
材料科学
·
物理化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2018
·Vol. 30
·期 1
·647-657
·
IF 2.324
Xiao Tai,Huang Zu-Sheng,Wang Lingyun,Cao Derong
Three novel dithieno[3,2- f :2′,3′- h ]quinoxaline-based organic dyes ( IQ-C, IQ-D and IQ-F ) with three π-spacers were synthesized and developed for dye sensitized solar cells, where dithieno[3,2- f :2′,3′- h ]quinoxaline was used as electron-withdrawing π-spacers, and 2,3-diphenylquinoxaline or dibenzo[ a,c ]phenazine as auxiliary electron-withdrawing π-spacers. The dye IQ-D with 2,3-diphenylquinoxaline as auxiliary electron-withdrawing π-spacer exhibited higher photocurrent ( J sc ) and photovoltage ( V oc ) than that of the dye IQ-C with 2,3-bis(4-(octyloxy)phenyl)quinoxaline as the additional electron-withdrawing π-spacer, due to the larger adsorption amount of IQ-D . The dye IQ-F with a rigid conjugated dibenzo[ a,c ]phenazine as additional electron-withdrawing π-spacer showed the highest efficiency of 6.54% under AM 1.5 G irradiation. It was demonstrated that the π-spacers influence the photovoltaic performance of the dithieno[3,2- f :2′,3′- h ]quinoxaline-based organic dyes significantly. The results indicated that the dyes with three π-spacers are promising candidates for efficient dye-sensitized solar cells.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
Materials Today Communications
·
2026
·
IF 4.9
Wei Zhang,Rui Tong,Xiangmin Zhao,Wei Gao,Xue Wang,Xinhui Yang
Ga and F co-doped ZnO (GFZO) thin films were prepared on quartz substrates via the sol-gel spin-coating method, followed by annealing in O 2 , Ar, N 2 , and H 2 atmosphere. The effects of annealing atmosphere on the structure, optical transmission, electrical properties, and thermal stability of GFZO films were systematically investigated. All GFZO films exhibited a typical wurtzite structure with a c-axis preferential orientation. The average optical transmittance of GFZO films annealed in Ar, N 2 , and O 2 atmospheres exceeded 90% in the visible region, while that of the H 2 -annealed sample was about 60%. The resistivity values of GFZO films annealed in Ar, N 2 , and H 2 atmospheres ranged from 1×10 -3 to 3×10 -3 Ω·cm at room temperature, whereas the film annealed in O 2 showed a much higher resistivity of 7.887×10 5 Ω·cm. Notably, the GFZO thin films annealed in Ar or N 2 atmosphere can maintain a low resistivity of 8×10 -3 Ω·cm even at 500 °C while retaining excellent thermal stability. With high optical transmittance, low electrical resistivity, and outstanding thermal stability, the Ar and N 2 annealed GFZO thin films are highly suitable for transparent conductive thin film applications.
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高影响因子
TALANTA
·
2016
·
IF 4.035
Haiyang Liu,Bibo Zhang,Chunyan Tan,Feng Liu,Jiakun Cao,Ying Tan,Yuyang Jiang
A simple Schiff base (BMSA) prepared from salicylaldehyde and 2-(1H-benzo[ d ]imidazol-2-yl)aniline was evaluated as an efficient fluorescent chemosensor for the selective recognition of Al 3+ and Cu 2+ over other common metal ions . This sensor could detect Al3 + in CH 3 OH/PBS with distinct emission red-shift (the detection limit 0.31 μM)and Cu 2+ in CH 3 OH/Tris-HCL (the detection limit 0.54 μM) with obvious fluorescence quenching . The obtained BMSA-Al 3+ and BMSA-Cu 2+ complexes could act as cascade sensors for detecting F − and S 2− , respectively. The recognizing behavior of BMSA toward Al 3+ and Cu 2+ has been investigated in detail through Job's Plot, FT-IR NMR , and HRMS analysis. Moreover, this chemosensor was verified to be of low cytotoxicity and good imaging characteristics for the detection of Al 3 + and Cu 2+ , and further for the recognition of F − and S 2− in living cells, suggesting that BMSA was proved to be a useful tool for tracking Al3 + /Cu 2+ and F − /S 2− ions in vivo .
研究领域:
生物化学
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分析化学
·
细胞生物学
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DOI
高影响因子
Journal of Energy Chemistry
·
2021
·
IF 9.676
Pengfei Zhou,Jing Zhang,Zhennan Che,Zuhao Quan,Ju Duan,Xiaozhong Wu,Junying Weng,Jinping Zhao,Jin Zhou
P2-Na 0.67 Ni 0.33 Mn 0.67 O 2 is considered as a promising cathode material for sodium-ion battery (SIBs) because of its high capacity and discharge potential. However, its practical use is limited by Na + /vacancy ordering and P2-O2 phase transition. Herein, a Ti 4+ /F − co-doping strategy is developed to address these issues. The optimal P2-Na 0.67 Ni 0.33 Mn 0.37 Ti 0.3 O 1.9 F 0.1 exhibits much enhanced sodium storage performance in the high voltage range of 2.0–4.4 V, including a cycling stability of 77.2% over 300 cycles at a rate of 2 C and a high-rate capability of 87.7 mAh g −1 at 6 C. Moreover, the P2-Na 0.67 Ni 0.33 Mn 0.37 Ti 0.3 O 1.9 F 0.1 delivers reversible capacities of 82.7 and 128.1 mAh g −1 at −10 and 50 °C at a rate of 2 C, respectively. The capacity retentions over 200 cycles at −10 °C is 94.2%, implying more opportunity for practical application. In-situ X-ray diffraction analysis reveals that both P2-O2 phase transitions and Na + /vacancy ordering is suppressed by Ti 4+ /F − co-doping, which resulting in fast Na + diffusion and stable phase structure. The hard carbon//P2-Na 0.67 Ni 0.33 Mn 0.37 Ti 0.3 O 1.9 F 0.1 full cell exhibits a high energy density of 310.2 Wh kg −1 and remarkable cyclability with 82.1% retention after 300 cycles at 1 C in the voltage range of 1.5–4.2 V. These results demonstrate that the co-doping Ti 4+ /F − is a promising strategy to improve the electrochemical properties of P2-Na 0.67 Ni 0.33 Mn 0.67 O 2 , providing a facile tactic to develop high performance cathode materials for SIBs.
研究领域:
材料科学
·
电化学
·
能源存储
·
无机化学
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固态化学
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电池技术
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2023
·
IF 4.5
Wenhao Yu,Wenruo Li,Luzheng Zhao,Weiqiang Kong,Shaofeng Xu,Xu Han,Haoyuan Zhu,Shun Liu,Jiancong Guo,Zhongsheng Wen
CuF 2 is a promising candidate of electrode materials for lithium-ion batteries due to its high specific capacity, high power density and environmental friendliness. However, the irreversible phase conversion and sluggish kinetics caused by serious copper dissolution and low conductivity make CuF 2 difficult to achieve long cycling life. A facile strategy to incorporate CoPPc into CuF 2 was proposed firstly to regulate the Cu-F bonding force to realize the high reversibility of CuF 2 for lithium-ion storage. The results of DFT calculation, differential charge density simulation, work function calculation and COHP bond level calculation show that the existence of CoPPc can improve the surface charge distribution of CuF 2 and thus improve the reversibility for durable lithium-ion storage. The cycle life performance of the CuF 2 @CoPPc composite electrode obtained by this method reached staggering 500 cycles and the capacity remained at 594.8 mAh/g.
研究领域:
材料科学
·
电化学
·
能量存储
·
电池技术
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Zhihao Wang,Mengxiao Zhang,Jiao He,Yongan Tang,Tingchao He,Qiang Sun,Dianyuan Fan,Yu Wang
The development of emitting materials that present both photoluminescence (PL) and X-ray excited optical luminescence has recently been attracting rising research interest for visualization applications. We introduced in this study the hydrothermally crystallized (Sr 1- x Mn x ) 5 (PO 4 ) 3 F 1- y Cl y ( x = 0–0.05, y = 0–0.40) nanorods with favorable PL and X-ray excited optical luminescence properties after composition modulating. The effects of solution pH and Cl − incorporation on structure and morphology of the products were firstly unveiled. (Sr 1- x Mn x ) 5 (PO 4 ) 3 F gives green emission at ∼548 nm ( 4 T 1 ( 4 G) → 6 A 1 ( 6 S)) under either 402 nm excitation or X-ray irradiation, and the optimal PL and X-ray excited optical luminescence were observed at x = 0.03. The replacement of F − by larger Cl − led to the generation of an amount of Frenkel defects (the dislocated F − and anion vacancies V F . ) along the c -axis, benefit from which the (Sr 0.97 Mn 0.03 ) 5 (PO 4 ) 3 F 1- y Cl y samples present enhanced PL and X-ray excited optical luminescence intensities by factors of 1.6 and 7.4, respectively, and the corresponding optimal y values are determined to be 0.20 and 0.30. Fluorescence decay analysis found steadily shortened fluorescent lifetime for Mn 2+ at higher Mn 2+ and Cl − concentrations, and the underlying mechanism was discussed. The (Sr,Mn) 5 (PO 4 ) 3 (F,Cl) apatite material, with enhanced PL and X-ray excited optical luminescence, may find novel applications for both lighting and scintillating.
研究领域:
材料科学
·
光学
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DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Ying Xu,Jun Qi,Manman Yu,Ruishu Zhang,Hengxun Lin,Huimin Yan,Chao Li,Jingmin Jia,Yong Hu
This study aimed to determine the efficacy of star anise dietary fiber (SADF) in alleviating the oxidative damage of myofibrillar protein (MP) from the perspective of volatile components. SADF and SADF without essential oils (EOs) (NSADF) were added to oxidized MP. The addition of NSADF and SADF improved the water-holding capacity (WHC) and gel strength, with the 0.4% addition showing the highest values. Moreover, the WHC of MP from the SADF-treated group was significantly higher than that from the NSADF-treated group at the same dosage, suggesting that EOs in SADF improved the WHC through antioxidation. EOs in SADF prevented the attack of hydroxyl radicals on MP, increasing the β-sheet level and decreasing the random coil level, which was supported by the results of FT-IR, carbonyl content, and sulfhydryl content. Limonene and anisaldehyde present in EOs played an antioxidant role, and anisaldehyde could scavenge free radicals through demethoxylation.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yunpeng Liu,Xupo Liu,Cuicui Zhang,Ye Chen,Zhitao Wang,Gangya Wei,Jing Zhang,Tianfang Yang,Fengxian Zhang,Shuyan Gao
Fe-N-C catalysts have served as ideal catalysts for oxygen reduction reaction (ORR), but the strong adsorption to ORR-relevant intermediates and less utilization of Fe-N x sites endow those catalysts with inferior performance. Here, an efficient catalyst consisted of Fe-N x species and FeF 2 /Fe 3 C nanoparticles co-anchored on N, F co-doped carbon nanotubes (Fe-NF-CNTs) has been constructed through a surface modification strategy. Sodium trifluoroacetate as functional linker modified on metal-organic framework surface promotes to form abundant and accessible active sites. FeF 2 /Fe 3 C nanoparticles and hydrogen fluoride generated in pyrolysis process facilitate to construct N, F co-doped CNTs with defects and holes. N, F co-doping modifies the adsorption characteristic of Fe-N x sites, while CNTs improve the accessibility of active sites and the capability of material transport. Therefore, Fe-NF-CNTs exhibits outstanding activity (E 1/2 = 0.85 V) and stabilization (ΔE = 6 mV, 10k cycles). Impressively, Fe-NF-CNTs delivers high power density (144 and 68 mW cm –2 ) and cycle stability (300 and 60 h) in liquid and flexible Zn-air batteries, respectively. This work provides a surface modification strategy to guide the tuning of electronic structure of efficient ORR catalysts designed for renewable green energy.
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高影响因子
Journal of Fungi
·
2023
·Vol. 9
·期 1
·94
·
IF 4.7
Azizullah,Muhammad Noman,Yizhou Gao,Hui Wang,Xiaohui Xiong,Jiajing Wang,Dayong Li,Fengming Song
SUMOylation is an essential protein modification process that regulates numerous crucial cellular and biochemical processes in phytopathogenic fungi, and thus plays important roles in multiple biological functions. The present study characterizes the SUMOylation pathway components, including SMT3 (SUMO), AOS1 (an E1 enzyme), UBC9 (an E2 enzyme), and MMS21 (an E3 ligase), inFusarium oxysporumf. sp.niveum(Fon), the causative agent of watermelon Fusarium wilt, in terms of the phylogenetic relationship, gene/protein structures, and basic biological functions. The SUMOylation components FonSMT3, FonAOS1, FonUBC9, and FonMMS21 are predominantly located in the nucleus.FonSMT3,FonAOS1,FonUBC9, andFonMMS21are highly expressed in the germinating macroconidia, but their expression is downregulated gradually in infected watermelon roots with the disease progression. The disruption ofFonUBA2andFonSIZ1seems to be lethal inFon. The deletion mutant strains forFonSMT3,FonAOS1,FonUBC9, andFonMMS21are viable, but exhibit significant defects in vegetative growth, asexual reproduction, conidial morphology, spore germination, responses to metal ions and DNA-damaging agents, and apoptosis. The disruption ofFonSMT3,FonAOS1,FonUBC9, andFonMMS21enhances sensitivity to cell wall-perturbing agents, but confers tolerance to digestion by cell wall-degrading enzymes. Furthermore, the disruption ofFonSMT3,FonAOS1, andFonUBC9negatively regulates autophagy inFon. Overall, these results demonstrate that the SUMOylation pathway plays vital roles in regulating multiple basic biological processes inFon, and, thus, can serve as a potential target for developing a disease management approach to control Fusarium wilt in watermelon.Keywords:asexual reproduction;cell death;cell wall integrity;Fusarium oxysporumf. sp.niveum;mycelial growth;stress response;SUMOylation pathway;watermelon
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产品关联
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2023
·
IF 5
Yumiao Su,Wenmu Li
Proton exchange membranes prepared from poly(aryl sulfone)s still need to overcome the drawbacks of chemical stability in acidic environments and low electrical conductivity due to water loss at high temperatures. Herein, we synthesized densely sulfonated poly(aryl sulfone) proton exchange membranes containing a 1H-imidazo[4,5-F][1,10]-phenanthroline moiety on the side chain with a metal ion coordination function. The coordination of 1H-imidazo[4,5-F][1,10]-phenanthroline groups to metal ions can effectively prevent the formation of •OH radicals from homolytic cleavage of H2O2 catalyzed by metal ions. Since the conditions for the continuous formation of •OH radicals are fundamentally eliminated, the antioxidant stability of the membrane material is greatly improved. Mesoscale microscopic simulations showed that 1H-imidazo[4,5-F][1,10]-phenanthroline has the effect of inducing phase separation, endowing the proton exchange membrane with a larger hydrophilic structural domain and possibly constructing a better connected channel for proton transport. Notably, these membranes can efficiently capture the Fe2+ and Fe3+ ions to form stable [Fe(phen)3]2+ and [Fe(phen)3]3+ interconnection points, respectively, which could not only enforce the water retention and the mechanical properties of the membranes but also serve as a catalyzed point to prevent H2O2 from undergoing homolytic cleavage and forming •OH radicals.
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高影响因子
危险品化学品经营许可证（带存储）