ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zhuang-Hao Zheng,Ning Chen,Zi-Long Zhang,Jun-Ze Zhang,Dong Yang,Mohammad Nisar,Mazhar Hussain Danish,Fu Li,Shuo Chen,Jing-Ting Luo,Guang-Xing Liang,Yue-Xing Chen
Flexible thermoelectric (TE) generators have received great attention as a sustainable and reliable option to convert heat from the human body and other ambient sources into electricity. This study provides a synthesis route that involves thermally induced diffusion to introduce Te and Se into Bi, fabricating an n-type Bi–Te–Se flexible thin film on a flexible substrate. This specific synthesis alters the crystal orientation (00l) of the thin film, improving in-plane electrical transportation and optimizing carrier concentration. Consequently, BixTeySe0.42 enhanced both the Seebeck coefficient and electrical conductivity, achieving a power factor of 17.1 μW cm–1 K–2 at room temperature. The TE device assembled with p-type Sb2Te3 exhibited exceptional flexibility with only a 26.2% change in resistance after 1000 times of bending at a radius of about 6 mm. The resistance change was further reduced to 7.5% after the application of a vinyl laurate coating. The fabricated TE device generated an ultrahigh output power of 792 nW with a temperature difference of 30 K.
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高影响因子
CRYSTAL GROWTH & DESIGN
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2024
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IF 3.2
Pengju Xia,Wanyuan Li,Kaiting Wu,Yifeng Lei,Wubin Dai
In the process of studying newfangled phosphor-converted white-light-emitting diodes (pc-wLEDs), some basic and important objectives of phosphor, i.e., high chemical/thermal stability, color rendering index (CRI), and low correlated color temperature (CCT), should pass muster simultaneously. Herein, for the first time, a series of photoluminescence (PL) color-tunable single-phase Ca3Y(GaO)3(BO3)4: Dy3+/Sm3+/La3+ (CYGB: Dy/Sm/La) phosphors with good dispersivity, crystallinity, and size uniformity have been designed and synthesized via a facile solid-state reaction method. Structurally, based on XRD and Rietveld refinements, the tendentious occupations of Dy/Sm/La on the Y3+ site with a 9-coordinated number (CN) over other cationic sites are in line with the facts that the ionic radius and charge difference of Dy/Sm/La are much closer to Y3+ in 9-CN than Y3+ in 7-CN and Ca2+ in both 9- and 7-CN. Spectrally, thanks to the “cool” white PL from 4f–4f transitions of Dy and red-emitting from Sm, polychromatic PL including “warm” white light with high efficiency could be realized in CYGB: Dy/Sm via the regulation of doping content and energy transfer (ET). Intriguingly, the “abnormal” phenomena of zero-thermal-quenching in the range from room temperature (RT) to 573 K were observed, probably owing to the synergistic effects of electron–phonon coupling, ET, and structural defects. Moreover, by tridoping La3+ to legitimately adjust the site environments, the PL of both Dy/Sm could be further tuned because they all include hypersensitive transitions that are closely related to the crystal field environment. Finally, as a proof-of-concept fabrication, the pc-wLED assembled by a combination of the composition-optimized CYGB: Dy/Sm/La and an n-UV LED chip via remote “capping” packaging shows attractive performances, indicating its potential as an efficient phosphor for n-UV wLEDs.
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JOURNAL OF POLYMER RESEARCH
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2013
·Vol. 20
·期 7
·1-9
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IF 2.019
Xu Jingmei,Ren Chunli,Cheng Hailong,Ma Li,Wang Zhe
Double fluoride 2,5-bis(4-fluorophenyl)-1,3,4-oxadiazole (BFO) monomer was synthesized. Copolymerization of BFO, 2,2-bis(4-hydroxypheny)propane (bisphenol A) and 3′3-disulfonate-4′4-dichloro dipheny sulfone (SDCDPS) at different molar ratio resulted in a new poly (aryl ether sulfone) containing 1, 3, 4-oxadiazole polymers (SPAESO). The structures of monomer BFO and copolymer were confirmed by FT-IR and 1 H NMR. The TEM pictures showed that the ion clusters were formed and distributed evenly in SPAESO copolymer matrix. The sulfonated polyoxadiazole membranes exhibited excellent thermal, dimensional and oxidative stability and lower methanol diffusion coefficient. The proton conductivity of SPAESO-3 was 7.5 × 10 −2 Scm −1 at 120 °C while the methanol permeability coefficient of SPAESO-3 was only 2.23 × 10 −7 cm 2 S −1 at 25 °C. According to the comprehensive performance, the sulfonated polyoxadiazole membranes may be the alternative materials as proton exchange membrane for PEMFC at medium-high temperature operation.
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ADVANCED POWDER TECHNOLOGY
·
2024
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IF 4.2
Jiuxiang Zhang,Xiaoping Zhang,Shengxing Lu,Yian Wang,Yulei Sui,Keyi Sun,Mengting Deng,Wenbin Fei,Ling Wu
Na 4 MnCr(PO 4 ) 3 is a promising cathode material with high redox potential and high energy density, but the intrinsic poor electronic conductivity and substandard structural stability restrict its practical application. Herein, porous Na 4 MnCr(PO 4 ) 3 /C with conductive networks and improved electrochemical properties is synthesized by a facile modified solid-state process using citric acid as a multifunctional additive. The results reveal that citric acid can be used as a grinding aid to make the raw materials mix more evenly and speed up the efficiency of ball milling. Besides, 3D conductive network and porous structure originated from polycondensation and carbonization of citric acid can promote the electrochemical properties of Na 4 MnCr(PO 4 ) 3 /C by enhancing the electronic/ionic conductivity and (de)intercalation reaction kinetics. As expected, the optimal Na 4 MnCr(PO 4 ) 3 /C delivers a high reversible capacity of 130.5 mAh g −1 at 0.1C rate, and exhibits a capacity retention of 82.62% at 10C rate after 500 cycles. In addition, the reversible biphasic reaction of the cathode is confirmed by the constant galvanostatic intermittent titration technique and ex-situ XRD, which shows great potential of the synthesized Na 4 MnCr(PO 4 ) 3 /C for practical applications.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Suyu Kong,Meili Ding,Mengjiao Yu,Wei Rong,Yang Wang,Jianfeng Yao
Developing high-efficiency adsorbents with sufficient active species to remove phosphate from wastewater is still a significant and formidable challenge. Herein, a metal-ion modification strategy was developed to construct a series of lanthanum (La 3 + )-functionalized zirconium-based metal-organic frameworks containing different functional groups through a one-step solvothermal process. The investigations for the influence of functional groups of ligands on the resulting La species and the role of La(OH) 3 in the phosphate removal are the primary focuses of this research. Unlike the simple La doping in UiO-66, UiO-66-NH 2 and many previously reported MOF systems, La(OH) 3 was in situ formed during the preparation of La-functionalized UiO-66-OH, which was confirmed by powder X-ray diffraction. At room temperature, the optimized 0.5La-UiO-66-OH, with a molar ratio of La 3+ versus the total metal precursor of 0.5, exhibits a desirable adsorption capacity of 219.6 mg g −1 , exceeding those of UiO-66 (146.8 mg g −1 ), UiO-66-OH (158.9 mg g −1 ), and many reported adsorbents. Besides, reusability tests demonstrate that 0.5La-UiO-66-OH can maintain high adsorption performance (96 %) after five cycles and the practical usability of by 0.5La-UiO-66-OH is confirmed using real lake water. In-depth investigations (X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy) on mechanism unveiled that the adsorption of phosphate by 0.5La-UiO-66-OH involved a combined process of electrostatic attraction and ligand exchange. This research presents the first regulation of generating active La species within MOFs through subtle modification and provides valuable insights for wastewater treatment.
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JOURNAL OF LUMINESCENCE
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2025
·
IF 3.6
Zihao Han,Zhihao Jiang,Jianwei Dao,Tiqun Wei,Zhenglin Jiang,Zhicheng Lv,Liang Yang
To advance artificial-light plant cultivation and high-performance white light-emitting diodes (LEDs), a phosphor combining excellent luminous thermal stability with superior luminescence is essential. In this work, the high-thermal-stability Ca 3 Bi(PO 4 ) 3 (CBPO): Eu 3+ red phosphors were successfully synthesized via high-temperature solid-state method. The performance of LEDs fabricated with the phosphors is enhanced in the far-red light region. When combined with commercial blue and green phosphors, the resulting white LEDs achieve high color rendering index (R a = 90.3) and low correlated color temperature (CCT = 4898 K). Upon near-ultraviolet (n-UV) excitation, the CBPO: Eu 3+ phosphors exhibit bright red emission at 615 nm, achieving optimal performance at a doping concentration of 0.24. At temperature of 423 K (150 °C), the luminescence intensity of the CBPO: 0.24Eu 3+ phosphor retained 71.9% of room-temperature value, demonstrating its good luminous thermal stability. The fabricated red LEDs with high color purity and spectral characteristics closely matching the absorption properties of plant photosensitive receptor proteins, enhance photosynthetic efficiency and underscore their substantial application potential in plant growth. The fabricated white LEDs can emit bright white light, with R a and R 9 values of 90.3 and 62, which are significantly higher than the standard R a (80) and R 9 (30) of commercial phosphors. We conducted a plant growth experiment in the laboratory, demonstrating that the fabricated red LEDs effectively supplement plant illumination and promote growth. These results demonstrate that the prepared CBPO: Eu 3+ red phosphors hold significant potential for applications in both plant growth lighting and white LEDs.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 7
·1-10
·
IF 5.3
Chen Fei,Wang Xiang,Yan Lei,Lin Zhixiong,Zheng Weijun,Wu Dianming,Qiu Bin,Fang Yifan,Liu Mingkun
By preparing gold nanoparticles-graphdiyne (Au-GDY) as sensing substrate and [Ru(NH 3 ) 6 ] 3+ -UiO-66-NH 2 MOFs (Ru-UiO-66) as signaling probe as well as linking the as-prepared Au-GDY and Ru-UiO-66 with the specific peptide (PT) of MMP-7 to form Ru-UiO-66/PT/Au-GDY, a cost-effective and sensitive electrochemical sensor was designed for the detection of matrix metalloproteinase-7 (MMP-7) which is an important biomarker for tumor and biliary atresia. The superior electrical properties, easy preparation, large surface area, and high stability of Au-GDY make it be a desirable substrate to immobilize PT. The unique structure of UiO-66-NH 2 is beneficial to assemble [Ru(NH 3 ) 6 ] 3+ probe and link PT. In the absence of MMP-7, the Ru-UiO-66/PT/Au-GDY modified electrode exhibited a prominent peak current of [Ru(NH 3 ) 6 ] 3+ , which is decreased after the addition of target MMP-7 since it can specifically recognize and cleave PT to induce the Ru-UiO-66 leave the electrode. The experimental results showed that the decrease of the [Ru(NH 3 ) 6 ] 3+ signal has a linear relation with the concentrations of MMP-7 in the range 0.01 pg mL −1 –10.0 ng mL −1 . By optimizing experimental conditions, the achieved detection limit (LOD) for MMP-7 is 5.0 fg mL −1 . The analysis of real serum samples has excellent accuracy. The simplicity of preparation and sensitivity make the Ru-UiO-66/PT/Au-GDY sensor a considerable promising analysis tool for MMP-7 detection. Graphical abstract
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ANALYTICAL LETTERS
·
2024
·
IF 1.6
Yan Chen,Yiwei Sun,Shuyan Qi,Li Zhang,Ming Yin,Xiuxia Wei,Yuting Luo,Dongpo Xu
Yolk-shell SnO2 mesoporous double-layer nanotubes were synthesized in one-step by single nozzle electrospinning. Compared with the traditional electrospinning using polyvinylpyrrolidone (PVP) as the precursor polymer to obtain the single nanotube material, two PVPs (PVPK88-96 and PVPK23-27) with different molecular weights in solution coupled with Sn2+ easily form the core-shell structure nanofiber through phase separation. The yolk-shell double-layer SnO2 nanotubes were obtained after calcination at 600 °C for 2 h. The yolk-shell SnO2 mesoporous double-layer nanotube is a promising sensing material toward 3-hydroxy-2-butanone as it shows high sensitivity, cycling stability, and selectivity. Moreover, the response and recovery times of the yolk-shell SnO2 mesoporous double-layer nanotubes toward 1 ppm 3-hydroxy-2-butanone were 122 s and 117 s.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Yao Huang,Xuefeng Hu,Chuanyi Wang,Detlef Bahnemann
Donor-acceptor (D-A) structure has gained momentous attention due to its controllable optical band gap and impressive carrier separation performance. The intramolecular charge transfer within photocatalysts could be modulated by constructing a D-A structure, thereby enhancing their performance in degrading pollutants. In our recent research, using poly(3-bromothiophene) (PTh-Br) and dicyandiamide (DCD) as precursors, a series of D-A structures (CN-PTh-Br(x)) based on polythiophene donors and carbon nitride acceptors were obtained by one-pot synthesis for first-time. The density functional theory calculations further demonstrate that PTh-Br segment (an electron donor) donates electrons to tri-s-triazine rings (an electron acceptor). The introduction of electron-rich polythiophene groups and electron-withdrawing Br atoms on carbon nitride skeleton can propel the transfer and separation of holes and electrons. Moreover, the polythiophene groups with high conjugation length can optimize the optical absorption of CN-PTh-Br(x) at 450–600 nm, thus markedly heightening the visible-light utilization efficiency of the materials. The photocatalytic performance of CN-PTh-Br(x) was assessed through the photodegradation of 2-mercaptobenzothiazole (MBT) under visible-light illumination. The photodegradation performance of CN-PTh-Br(0.5) stood out among all the samples, demonstrating a remarkable ability to remove 99.8% of MBT within 45 min.
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Journal of Energy Storage
·
2025
·
IF 9.8
Zhenyuan Shi,Shuanghui Li,Bolin Chen,Zihan Chen,Tao Li,Yingxue Chen,Dandan Wang,Liming Lin,Jun Gao,Jingzheng Weng,Minquan Tian
To enhance the lithium ion transport properties of solid polymer electrolytes, a novel lithium salt—poly(acrylic acid)–boric acid–anhydrous lithium hydroxide–oxalic acid composite (LiPAAOB)—was designed and synthesized. This composite lithium salt was introduced into a polymer system with polyvinylidene fluoride (PVDF) as the matrix, along with LiTFSI, and NASICON-structured Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) was added as an inorganic filler. The resulting solid polymer electrolyte (SPE) exhibits a three-dimensional ion conduction network. LiPAAOB, with its rich carboxyl and borate ester structures, effectively stabilizes anions, increases lithium salt dissociation, and promotes the ordered migration of Li + by providing continuous lithium-affinitive functional groups, significantly improving the Li + transference number. LATP, as an inorganic filler, forms a three-dimensional spatial framework in the polymer system, offering more pathways for Li + migration. This solid polymer electrolyte achieved an ion conductivity of up to 2.34 × 10 −3 S·cm −1 , a Li + transfer number of 0.7 and an enlarged electrochemical window of 5.3 V (vs. Li + /Li), exhibiting excellent electrochemical reversibility. The assembled LiFePO₄|LiPAAOB@LATP SPE|Li full cell retained 90.2 % of its capacity after 500 cycles at 1C rate, and the Li symmetric cell operated stably for over 1800 h at a current density of 0.2 mA·cm −2 , demonstrating excellent interface compatibility and dendrite suppression capability.
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JOURNAL OF MEDICINAL CHEMISTRY
·
2019
·
IF 6.054
Xia Yao,Xiuyun Sun,Shuyu Jin,Ling Yang,Hongjiang Xu,Yu Rao
A structure-hopping strategy was applied to discover a series of novel 4-aminoquinoline-3-carboxamide derivatives as potent, reversible BTK inhibitors. Compared to the previously described cinnoline scaffold compounds, the 4-aminoquinoline analogues showed significantly improved drug-like properties, especially in their aqueous solubility. The most potent compound, 25, displayed a stronger inhibitory effect on both BTKWT (IC50 = 5.3 nM) and BTKC481S (IC50 = 39 nM). In a rodent collagen-induced arthritis model, compound 25 efficiently reduced paw swelling without a loss in body weight. On the basis of potency, drug-like properties, stability, and noncovalent mode of inhibition, our representative inhibitors could have a promising profile to be treatments for a wide range of autoimmune diseases.
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高影响因子
PEST MANAGEMENT SCIENCE
·
2023
·
IF 4.1
Tianze Li,Min Lv,Houpeng Wen,Jiawei Du,Zhen Wang,Shaoyong Zhang,Hui Xu
Background Phytopathogenic fungi can cause a direct loss in economic value of agriculture. Especially Valsa mali Miyabe et Yamada, a devastating phytopathogenic disease especially threatening global apple production, is very difficult to control and manage. To discover new potential antifungal agents, a series of thiosemicarbazone derivatives of 3-acetyl- N -benzylindoles were prepared. Their antifungal activities were first tested against six typically phytopathogenic fungi including Curvularia lunata , Valsa mali , Alternaria alternate , Fusarium graminearum , Botrytis cinerea and Fusarium solani . Then their mechanism of action against V. mali was investigated. Results Derivatives displayed potent antifungal activity against V. mali . Notably, 3-acetyl- N -benzylindole thiosemicarbazone (IV-1: EC 50 : 0.59 μ g mL −1 ), whose activity was comparable to that of a commercial fungicide carbendazim (EC 50 : 0.33 μ g mL −1 ), showed greater than 98-fold antifungal activity of the precursor indole. Moreover, compound IV-1 displayed good protective and therapeutic effects on apple Valsa canker disease. By scanning electron microscope (SEM) and RNA-Seq analysis, it was demonstrated that compound IV-1 can destroy the hyphal structure and regulate the homeostasis of metabolism of V. mali via the ergosterol biosynthesis and autophagy pathways. Conclusion 3-Acetyl- N -(un)substituted benzylindoles thiosemicarbazones (IV-1–IV-5) can be studied as leads for further structural modification as antifungal agents against V. mali . Particularly, these ergosterol biosynthesis and autophagy pathways can be used as target receptors for design of novel green pesticides for management of congeneric phytopathogenic fungi. © 2023 Society of Chemical Industry.
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