CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Deyu Bao,Qiang Sun,Linsen Huang,Jie Chen,Jun Tang,Dali Zhou,Min Hong,Lei Yang,Zhi-Gang Chen
Tremendous efforts have been focusing on the improvement of p-type (Bi, Sb) 2 Te 3 -based thermoelectric materials for commercial applications. In this study, we achieve versatile interface engineering through a surface decoration of Bi 0.5 Sb 1.5 Te 3 by amorphous Sb 2 S 3 combining with spark plasma sintering, which introduces semi-coherent Sb/Bi 0.5 Sb 1.5 Te 3 interfaces and dopes S into Bi 0.5 Sb 1.5 Te 3 . Semi-coherent Sb/Bi 0.5 Sb 1.5 Te 3 interfaces strongly scatter phonons and lower energy carriers, leading to decreased thermal conductivity and increased Seebeck coefficient, while the electrical conductivity is not sacrificed due to the compromise of the slightly reduced carrier mobility by interfacial scattering and the increased carrier concentration by S doping. Benefited from the decoupled thermoelectric properties, a significantly enhanced power factor of 3345.40 μW m −1 K −2 and a low thermal conductivity of 0.78 W m −1 K −1 is obtained in Bi 0.5 Sb 1.5 Te 3 -0.4%Sb 2 S 3 , leading to a high peak zT of ∼ 1.31 at 330 K, which shows a 54% enhancement compared with pristine Bi 0.5 Sb 1.5 Te 3 . Moreover, a conversion efficiency of ∼ 7.6% can be predicted in a single leg Bi 0.5 Sb 1.5 Te 3 -0.4%Sb 2 S 3 -based module under a cold side temperature of 300 K and hot side temperature of 480 K. This study paves a facile amorphous Sb 2 S 3 induced interface engineering strategy for the development of high performance (Bi,Sb) 2 Te 3 -based thermoelectric materials.
研究领域:
材料科学
·
能源科学
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Xiaowen Hu,Jinwu Chen,Jie Li,Huaicheng Xiang,Ying Tang,Liang Fang
Two zircon-structured ceramics AEuV 2 O 8 (A = Bi, La) were prepared with optimal sintering temperatures of 900 °C and 1375 °C, respectively. They exhibited sharp contrast performances with medium ε r ∼ 28.7 ± 0.1, Q × f ∼ 14,000 ± 300 GHz, and large positive τ f ∼ 75.7 ± 2.0 ppm/°C for BiEuV 2 O 8 , whereas low ε r ∼ 10.4 ± 0.1 Q × f ∼ 25,100 ± 300 GHz, and negative τ f ∼ − 40.7 ± 2.0 ppm/°C for LaEuV 2 O 8 . The rattling effect at the A-site was more dominant in determining microwave dielectric properties than that of compressed V 5+ at the B-site. It resulted in the higher ε r , lower Q × f and τ ε , and larger τ f of BiEuV 2 O 8 than those of LaEuV 2 O 8 . Besides, their Q × f was related with the relative density, bond valence and FWHM of the B 1 g Raman mode.
研究领域:
材料科学
·
物理学
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DOI
高影响因子
Science and Technology of Nuclear Installations
·
2026
·Vol. 2026
·期 1
·8106125
·
IF 0.9
Yaqing Ren,Yulong Du,Yufaning Yin,Xiaoyuan zhou,Ziliang Hou,Weinan Sun,Peng Lin
This paper introduces a simple and rapid separation method for the determination of 55 Fe and 63 Ni in lead–bismuth alloys. This method is based on chemical precipitation and solid-phase extraction chromatography techniques, which can separate and purify individual radionuclides from sample matrix elements and other radionuclides. First, lead, bismuth, and iron are separated by chemical precipitation. On the one hand, nickel is separated on a NI-resin column from the filtered solution. On the other hand, after the precipitation is digested, iron is further separated from lead and bismuth by chemical precipitation. This study explored the effects of solution pH, ammonium citrate concentration, and eluent concentration (acid concentration) on the retention behavior of the NI-resin. The optimal separation efficiency for nickel was achieved under the following conditions: a solution pH of approximately 9, an ammonium citrate concentration of 0.2 mol/L, and an eluent (nitric acid) concentration of 3 mol/L. The recovery rates of Fe and Ni obtained by this method are 88.24% and 81.57%, respectively, and the decontamination factors of Pb and Bi are 6.5 × 10 2 and 1.4 × 10 4 , respectively.
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高影响因子
Journal of Materials Chemistry A
·
2013
·Vol. 1
·期 20
·6226-6237
·
IF 0
Ganwei Zhang,Jiwen Hu,Guojun Liu,Hailiang Zou,Yuanyuan Tu,Fei Li,Shengyu Hu,Hongsheng Luo
Random bi-functional copolymers bearing fluorinated units and sol–gel forming units were prepared and used together with silica particles in a one-pot process for preparing superamphiphobic coatings. The copolymers P(FOEA-r-IPSMA) were prepared by atom transfer radical polymerization (ATRP) of 2-(perfluorooctyl)ethyl acrylate (FOEA) and 3-(triisopropyloxy)silylpropyl methacrylate (IPSMA). The uniform silica particles were prepared using a modified Stöber process. Stirring P(FOEA-r-IPSMA), silica, water, and HCl together with substrates triggered the sol–gel reactions of the IPSMA units. These involved first the hydrolysis of IPSMA to yield silanol groups and then the condensation of the IPSMA silanol groups among themselves, and with silanol groups on silica or glass surfaces or with hydroxyl groups on cotton or filter paper. At optimized mass ratios of P(FOEA-r-IPSMA) to silica, the resultant coatings consisted of lightly covered silica particles that were embedded in a crosslinked P(FOEA-r-IPSMA) film. By optimizing the molar ratio between FOEA and IPSMA in P(FOEA-r-IPSMA), the rough particulate coatings on cotton, filter paper, and glass plates exhibited superamphiphobicity. More importantly, the particulate coatings were resistant to solvent extraction and NaOH etching.
研究领域:
材料科学
·
高分子化学
·
表面工程
·
涂层技术
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DOI
Journal of Materials Research and Technology-JMR&T
·
2020
·Vol. 9
·期 4
·9142-9152
·
IF 5.289
Jian-bo Xie,Tian Fan,Zhi-qi Zeng,Han Sun,Jian-xun Fu
This work investigates the effect of Bi addition on the formation of sulfide inclusions, and also aims to improve the machinability and mechanical properties of type 0Cr18Ni9 stainless steel. Smelting experiments as well as machining and tensile tests were carried out in various low and high Bi content steels. Results show that the forms of Bi-MnS inclusions were: isolated particle, cavity-bridge link, semi- and complete encapsulation. The forms of MnS inclusions were found as: mushroom or rod-like, long strip, spherical, and spindle shape. The normalized frequency of 0.065, corresponding to the inclusion area above 50 μm 2 , was the greatest at 2300 ppm Bi, reflecting an increase in the number of larger-sized inclusions. The averge hardness of steel matrix and the inclusions at 0 ppm Bi was 179 and 166 kgf/mm 2 , while that after Bi addition was 154∼168 and 155∼166 kgf/mm 2 , respectively. The Bi addition to steel improved the surface finish of the steels after machining and increased the ductility of steel, but had little effect on the yield strength of steel.
研究领域:
材料科学
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冶金学
·
机械工程
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 4.4
Cao Jiacheng,Chen Yangxian,Wang Meiyi,Lu Xuefeng,Zhu Min
Strontium barium niobate (SBN) with a tetragonal tungsten bronze structure is a promising n -type oxide thermoelectric material, but its high intrinsic thermal conductivity limits further improvement of the thermoelectric figure of merit (ZT). In this study, A-site Bi-doped (Sr 0.7 Ba 0.3 ) 1-x Bi x Nb 2 O 6 (x=0.00, 0.05, 0.10, 0.15) ceramics were synthesized by a solid-state reaction method, and the effect of Bi doping on the microstructure and thermoelectric transport properties was systematically investigated. The results show that Bi 3+ ions are successfully incorporated into the A-sites of the SBN lattice, inducing local lattice distortions and introducing oxygen vacancies. TEM observations reveal high-density dislocations and lattice distortions. Electrical transport analysis indicates that Bi doping significantly increases the carrier concentration and reduces the carrier activation energy by introducing oxygen vacancies, which suppresses the contribution of small polaron hopping conduction and promotes band transport, thereby markedly decreasing the electrical resistivity. Meanwhile, the 6s 2 lone-pair electrons of Bi 3+ modulate the band structure, maintaining a considerable Seebeck coefficient at a relatively high carrier concentration. The x = 0.10 sample achieves a high-power factor of 410.4 μW·m −1 ·K −2 at 1073 K. In terms of thermal transport, the mass fluctuations, lattice distortions, and dislocation defects introduced by Bi doping constitute multiple phonon scattering centers, effectively reducing the lattice thermal conductivity. Finally, benefiting from the synergistic optimization of electrical and thermal transport, the x = 0.10 sample attains a maximum ZT of 0.24 at 1073 K. This study confirms that Bi doping is an effective strategy to enhance the thermoelectric performance of SBN-based materials and provides a new route for developing high-performance oxide thermoelectric materials.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Meidan Que,Jiaojiao Zheng,Xiangwei Bai,Ruochen Shi,Peihong Ma,Xun Sun,Jun Xu,Yao Wang
Bi 4 Ti 3 O 12 is a bismuth-based photocatalyst that belongs to the Aurivillius family of compounds, and it has garnered widespread attention in the field of photocatalysis due to its unique layered structure. However, it is dominated by single-electron-transfer during the reaction, which hinders the deep reduction of CO 2 to CH 4 and limits catalytic performance. In this work, Bi 4 Ti 3 O 12 was modified through the in-situ loading of Bi 0 metallic nanoparticles and Yb 3+ doped. Experimental results confirm that the Bi/Bi 3.99 Yb 0.01 Ti 3 O 12 exhibits superior photocatalytic activity, with CO and CH 4 production rates of 5.70 μmol g −1 h −1 and 5.32 μmol g −1 h −1 , respectively. Mechanistic investigations reveal that the Ohmic contact between Bi 0 and Bi 4 Ti 3 O 12 improves electron transport efficiency. Meanwhile, the constructed O 2 p -Yb 4 f -Yb 5 d -Ti 3 d electron-transfer bridge promotes multi-electron reaction kinetics and suppresses photogenerated carrier recombination, fundamentally improving the selectivity of CO 2 methanation. This study clarifies the electronic modulation mechanism induced by rare-earth doped, providing a feasible strategy and technical reference for the design of high-performance photocatalysts toward efficient CO 2 methanation.
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高影响因子
Advanced Fiber Materials
·
2025
·
IF 21.3
Li Xiaoyan,Guo Zhiguang,Ji Yating,Xie Yu,Du Peibo,Wang Jie,Xue Yunfan,Xu Bi,Cai Zaisheng
Integration of radiative cooling and heating within a single textile is essential for effectively maintaining human thermal comfort and reducing energy consumption. However, most existing radiative thermal-management textiles depend either on complex micro/nanostructure fabrication techniques or on the simple stacking of cooling and heating layers, both of which substantially limit their scalability and long-term durability in practical applications. Here, we report a scalable dual-mode thermal management textile with biomimetic asymmetric solar confinement (ASCT), achieved through the design of asymmetric micro/nano-structures guided by controlled fiber-orientation alignment. ASCT demonstrates excellent solar modulation capability, with the high solar confinement (HSC) side exhibiting a solar absorptance of 97%, while the low solar confinement (LSC) side maintains a significantly lower absorptance of only 4.9%. Additionally, the mid-infrared (MIR) emissivity contrast between the two sides reaches up to 40%. Compared to conventional textiles, ASCT significantly enhances the thermal modulation range by up to 15 °C. More importantly, ASCT has mechanical robustness, breathability, softness, and durability tailored for wearable applications. This work offers a novel path to the structural design and scalable fabrication of textiles, which is expected to accelerate their advancement and practical deployment. Graphical abstract
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高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2025
·Vol. 39
·期 7
·e70249
·
IF 0
Conghao Liu,Yang Yang,Runzhi Li,Xiaoqing Zhang,Dionisio Zaldivar Silva,Yuefeng Zhao,Ruizhuo Ouyang,Yuqing Miao,Baolin Liu,Shuang Zhou
Three new thiosemicarbazone ligands (L1–L3) were synthesized, followed by their complexation with bismuth (Bi, III) producing the corresponding Bi (III) complexes (I–III). A series of in vitro biological studies of both the ligands and bismuth complexes were well assessed on a panel of human cancer cell lines, A549 and H460, including cytotoxicity assay, inhibition rate, clonogenic assay, scratch assay, and cell apoptotic evaluation. Compared to the ligands, the bismuth complexes displayed greatly enhanced ability to suppress colony formation and cell migration and thus significantly induced apoptosis of human lung cancer cells, sticking out remarkable anticancer activities of the Bi-based complexes. Significantly, Complexes I and III were found to be more active and exhibited potent cytotoxicity against the A549 cancer cell line, with IC 50 values of 2.68 and 1.08 μM, respectively. Accordingly, the antitumor effects of Complexes I and III on lung cancer cell line A549 in vivo human lung model were further investigated to simulate the clinical manifestations of A549 in BALB/c mice. The results indicate that Complex III mostly inhibited A549 xenograft growth in mice, with tumor volume reduced by 94.74% and tumor weight lightened by 98.27%, as compared to control. More importantly, no harmful effect was observed on the mouse liver, spleen, and lung. Good preliminary results obtained in mice reveal the great potential of Bi (III) thiosemicarbazone complexes as anticancer drugs.
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Journal of Cleaner Production
·
2022
·
IF 11.072
Hualin Jiang,Qi Wang,Pinghua Chen,Huitao Zheng,Jinwen Shi,Hongying Shu,Yanbiao Liu
The development of advanced and robust photocatalysts is vital for efficient photocatalytic degradation of the antibiotic tetracycline . Herein, a hierarchical heterojunction (Bi)BiOBr/rGO was facilely synthesized by employing an in-situ reduction strategy. An obvious synergistic effect between adsorption and photocatalysis was observed. A >98% tetracycline degradation efficiency was obtained within 20 min, and high performance could be maintained for over 50 h in a continuous operation without any post-treatment. The experimental and DFT calculation results suggested that there existed a built-in electric field between the interfaces, leading to the fast electron migration. Furthermore, rGO could significantly enhance the tetracycline adsorption, and Bi largely suppressed the charge carrier recombination owing to the surface plasmon resonance (SPR) effect. A possible tetracycline degradation pathway was proposed based on the HPLC-MS analysis. This study provides pathways for the rational design of advanced and robust photocatalysts to effectively degrade emerging contaminants in practical continuous-flow configurations.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 6
·1-12
·
IF 2.8
Lin Wu,Yang Qingqing,Meng Bin,Ping Xinyu,Fang Congcong,Zhang Han,Chen Yingquan
A series of lead-free perovskite-structured dielectric ceramics of (1-x)Ba 0.6 Sr 0.4 Ti 0.7 Zr 0.3 O 3 -xBi(Li 0.5 Ta 0.5 )O 3 ((1-x)BSTZ-xBLT, x = 0, 0.10, 0.15, and 0.20) were prepared through solid-state reaction method combined with conventional sintering. Specifically, for x = 0, 0.10, 0.15, and 0.20, the samples of (1-x)BSTZ-xBLT were sintered in air for 8 h at 1500 °C, 1300 °C, 1200 °C, and 1150 °C, respectively. All samples possess a pure perovskite structure and achieve a high relative density of 93 ~ 95%. The average grain size of all samples falls within 1.74 ~ 2.67 μm, and all composition elements distribute uniformly. The addition of BLT is conducive to reduce the sintering temperature of BSTZ. The critical electric field corresponding to the saturation polarization intensity of BSTZ increases from 69.4 kV/cm to 88.9 kV/cm as x rises from 0 to 0.10. The dielectric permittivity of 0.85BSTZ-0.15BLT and 0.80BSTZ-0.20BLT keeps stable (∆ \(\varepsilon\) / \(\varepsilon\) 25 °C ≤ ± 15%) in the test temperature of − 100 ~ 350 °C. The activation energy ( \(E\) α ) of BSTZ enhances from 0.86 eV to 1.72 eV as x rises from 0 to 0.20, which contributes to the broadening of the band gap. These results suggest that (1-x)BSTZ-xBLT ceramics are promising candidates for high-temperature ceramic capacitors.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Keru Cao,Fangyu He,Jun Yan,Weiwei Zhu,Yanan Wang,Yuheng Zhang,Biao Zhang,Xiaohua Yu,Qingfeng Shen,Chunxia Liu,Qi Wang
Electrochemical detection techniques are not sensitive in detecting isomers with similar structures and properties due to the disadvantages of some sensors such as instability, poor selectivity and susceptibility to environmental interference. Therefore, calcined metal–organic framework structure (Bi-MOF) was used to prepare its derivative Bi@C nanocomposites, and materials with multiple surface active sites and large specific surface area were developed to improve the current response signal of the detected substance. The morphology and structure of the prepared Bi@C were tested by XRD, SEM and other characterisation means. The electrochemical response of Bi@C nanocomposites was studied using an electrochemical workstation for hydroquinone (HQ) and catechol (CC) electrochemical detection. An electrochemical method was developed for the simultaneous determination of hydroquinone and catechol in a simple and highly selective manner. Differential pulse voltammetry (DPV) was used for simultaneous detection of HQ and CC. The results show that Bi@C electrode can detect isomers with high selectivity. Bi@C was detected in the range of 2–600 μM and 2–800 μM for HQ and CC, respectively, in pH = 7 solution. The detection limits were 0.14 μM and 0.12 μM(S/N = 3), respectively. The sensor is successfully applied to detect HQ and CC of real samples and has low detection limit, good recovery, high selectivity, stability and reproducibility. It provides a new idea for electrochemical detection.
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高影响因子
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