CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Wang-Wei Liao,Lei Yang,Jie Chen,Da-Li Zhou,Xian-lin Qu,Kun Zheng,Guang Han,Jia-Bei Zhou,Min Hong,Zhi-Gang Chen
Copper selenide (Cu 2 Se) has been extensively studied as an eco-friendly thermoelectric candidate owing to the outstanding thermoelectric performance of its high-temperature β-phase. In this study, we propose that α-Cu 2 Se is also a promising thermoelectric material at near-room-temperature. We synthesize nanostructured Cu 2-x Se via a facile solvothermal method, and densify the samples using Spark Plasma Sintering to maintain the small grain sizes. Although the as-prepared α-Cu 2 Se has intrinsically low lattice thermal conductivity , its high Cu deficiency leads to a high carrier concentration, therefore, a low thermoelectric performance. As an electron donor, bismuth can effectively compress the Cu vacancies of the as-prepared α-Cu 2 Se and in turn reduce its carrier concentration from 4.1 × 10 20 to 2.0 × 10 20 cm −3 at room temperature, achieving a significantly enhanced power factor and a reduced carrier thermal conductivity. Consequently, a zT of 0.43 at 373 K is obtained in Cu 1.982 Bi 0.006 Se, showing great potential in developing high-performance near-room-temperature α-Cu 2 Se-based thermoelectric materials.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
LANGMUIR
·
2022
·
IF 4.331
Xiaolei Zhang,Bin Liu,Shu Yao,Zongming Liu,Jinkai Li
Photothermal therapy (PTT) has attracted great attention as an anticancer treatment strategy. With the rapid development of nanomedicine, multifunctional inorganic nanophotothermal agents provide a new way to improve the effect of PTT. Herein, bovine serum albumin (BSA)-modified Bi nanosheets (Bi NSs) with good biocompatibility were synthesized by a facile redox and ball milling method and applied as a photothermal agent for the enhancement of PTT. Owing to the strong near-infrared absorption, Bi NSs exhibit high photothermal conversion efficiency (η = 36.17%) under 808 nm laser irradiation and can serve as a nanotherapeutic agent for cancer therapy. In addition, in vitro cell safety analysis also suggests that the toxicity of BSA-modified Bi NSs is negligible. Upon 808 nm irradiation, the uptake ability of tumor cells to Bi NSs@BSA has been improved. Moreover, Bi NSs@BSA also can be used as a good contrast agent for CT imaging and then to observe the distribution of materials in the tumor site. Finally, Bi NSs@BSA-mediated PTT results show a high ablation rate of A549 tumor cells both in vitro and in vivo. All results reveal that Bi NSs@BSA is a promising nanotherapeutic platform for PTT.
研究领域:
纳米医学
·
癌症治疗
·
生物材料
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.7
Chun Sun,Jiazhi Cui,Zhengtao Qiu,Jiabao Bai,Chao Fan,Dan Huang,Guohua Jia
Perovskites have attracted considerable interest as potential photocatalysts for sustainable hydrogen generation. Nonetheless, their intrinsic instability in aqueous media significantly constrains their practical deployment in photocatalytic hydrogen evolution. To address this challenge, we propose a versatile strategy for stabilizing Cs 3 Bi 2 Br 9 (CBB) perovskite photocatalysts through combining zwitterionic ligand encapsulation with Sn 4+ doping. The zwitterionic ligand, synthesized by reacting 4-bromobutyric acid (BBA) with oleylamine (OLA), was employed to passivate the perovskite surface by anchoring to both Bi 3+ and Br − sites, effectively mitigating surface defects. Notably, Sn 4+ doping is essential for aqueous stability, as the incorporation of Sn 4+ not only enhances the intrinsic stability of CBB but also reinforces the binding affinity of surface ligands. As a result, the Sn 4+ -doped CBB (CBBS x ) with ligand encapsulation demonstrates remarkable stability, retaining its structural integrity in water for over six months and withstanding more than three cycles of photocatalytic testing. Importantly, this strategy demonstrates considerable generality, as it can be readily extended to the synthesis of other halide perovskites. Specifically, the MoS x -loaded Sn 4+ :Cs 3 Bi 2 Br x I 9-x (MoS x /CBBIS 0.2 ) composite achieves a remarkable hydrogen evolution rate of 18.2 mmol h −1 g −1 , which represents the highest performance reported to date among Bi-based perovskite photocatalysts.
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 46
·期 8
·3588-3594
·
IF 3.591
Qingqing Gao,Qian Lei,Ruoyan Miao,Manyi Gao,Hu Liu,Qin Yang,Yequn Liu,Fang Song,Yongsheng Yu,Weiwei Yang
Polymeric carbon nitride (PCN) is an emerging metal-free photocatalyst with high stability but is plagued by low photocatalytic efficiency due to the rapid charge carrier recombination behavior. Herein, Bi-doped graphitic carbon nitride nanotubes (BCN nanotubes) with a porous structure have been facilely prepared by one-step thermal polymerization of mixtures of melamine, urea and bismuth nitrate pentahydrate under an Ar atmosphere. With unique structural advantages for charge carrier transfer, light harvesting, and large surface area, the as-prepared BCN nanotubes exhibit excellent photocatalytic activity for the degradation of Rhodamine (Rh) B with a 26.8-fold higher reaction rate than that of PCN under visible light irradiation. This work provides informative principles about the synthesis of PCN with controlled morphology and element doping simultaneously for the photocatalytic degradation of chemical pollutants.
研究领域:
材料科学
·
环境科学
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DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·Vol. 107
·期 6
·3769-3777
·
IF 3.5
Ke Zhang,Jingfei Chen,Quan Dong,Dianhao Hou,Hongwei Li,Tianxia Wei,Xueliang Li,Xu Feng,Shifeng Zhou
Bismuth (Bi)-doped glass and fiber materials exhibit excellent optical performance and have potential in fields such as fiber communication and tunable lasers. However, the preparation of Bi-doped glass and fiber with high optical activity is still confronted with huge challenges. This study proposes a germanium oxide hybridization strategy to enhance near-infrared emission in Bi-doped glass. In addition, by the systematical optimization of the optical response and processability of the glass system, Bi-doped glass fibers are successfully constructed. The constructed glass fibers have excellent optical performance, and the enhanced amplified spontaneous emission is realized. They show potentials for applications in broadband fiber amplifiers and tunable lasers.
研究领域:
光学材料
·
光子学
·
光纤光学
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Zhiyuan Chen,Bingbing Shao,Chao Liang,Yiwen Zhang,Yunpu Zhai,Yonggang Liu
Bi-HOF/g-C 3 N 4 direct Z-scheme heterojunction was constructed. • Bi N/Bi O bonds enhanced interfacial charge transfer. • BHG-3 achieved 97.26% MB removal under visible light. • ·O 2 − and h + were identified as dominant active species. • BHG-3 showed good stability and broad pollutant applicability. To integrate the visible-light-harvesting capability of g-C 3 N 4 with the interfacial electron-transfer function of hydrogen-bonded organic frameworks (HOFs), a Bi-HOF/g-C 3 N 4 (BHG) direct Z -scheme heterojunction was constructed via a facile hydrothermal assembly strategy. Structural and surface chemical characterizations confirmed the successful formation of the heterojunction, where strong interfacial coupling was established through Bi–N/Bi–O coordination bonds and hydrogen-bonding interactions. Photoelectrochemical and spectroscopic analyses revealed that the BHG heterojunction markedly promoted charge separation and migration, as evidenced by an enhanced photocurrent response, reduced interfacial charge-transfer resistance, and suppressed recombination of photogenerated carriers. The optimized BHG-3 composite exhibited excellent visible-light photocatalytic activity, achieving 97.26% removal of methylene blue (MB) within 40 min, with an apparent reaction rate constant 3.39 times higher than that of pristine g-C 3 N 4 . Moreover, BHG-3 showed good cycling stability, favorable tolerance to selected coexisting inorganic anions and degradation capability toward several model organic contaminants. Radical trapping experiments and mechanistic analyses confirmed a direct Z -scheme charge-transfer pathway, in which electrons enriched on g-C 3 N 4 and holes retained on Bi-HOF synergistically participated in pollutant degradation. The possible photodegradation pathway of MB over BHG-3 was further proposed based on LC-MS analysis. This work provides insight into interfacial charge regulation in HOF-based photocatalysts and offers a feasible strategy for developing efficient visible-light-driven systems for organic pollutant degradation.
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Qi Xue,ZhiYu He,Kun Liu,Juan Bai,Yu Chen,Yuanzhen Zhou
The rational design of interfacial active sites is crucial for enhancing the activity and durability of Pd-based electrocatalysts for ethanol oxidation reaction (EOR). Herein, an ultrathin PdNi metallene (PdNiene) with unique asymmetric Pd─O─Bi oxo-bridge sites (PdNi-O-Biene) is synthesized via a multi-step hydrothermal method. The ultrathin 2D nanosheet structure of the metallene enables abundant exposure of Pd active sites. Notably, Ni incorporation facilitates OH * adsorption/formation and thereby promotes the oxidative removal of CO * intermediates, while the Bi-induced asymmetric oxo-bridge interface triggers interfacial charge redistribution around Pd active centers, which further facilitates CO * desorption/oxidative removal and efficient C─C bond cleavage, thus favoring the C1 reaction pathway. As a result, the optimized PdNi-O-Biene demonstrates exceptional mass activity (8.42 A mg Pd −1 ) and specific activity (28.09 mA cm ECSA −2 ) for EOR in alkaline electrolyte, representing improvements of 5.5 and 3.7 times over commercial Pd nanoparticles (Pd NPs), respectively. This work not only provides an effective strategy for the synthesis of high-performance EOR electrocatalysts but also highlights the potential of atomic-scale interface engineering for alcohol oxidation reactions.
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DOI
高影响因子
Small
·
2026
·
IF 11.8
Yuehui Chen,Zheng Yang,Panpan Gao,Songmei Sun,Weiyan Zhu,Jianhua Yan
Constructing photocatalysts with multidimensional active site architectures represents a powerful strategy for boosting visible-light-driven VOC degradation efficiency. Here, we report a structure regulation strategy achieved through interface coupling of a bimetallic gold-bismuth (Au-Bi) nanodot network with heteromorphic Bi 2 WO 6 composed of mesoporous nanofibers and nanosheets. This yields distinctive Au-Bi nanodot-anchored 1D/2D Bi 2 WO 6 photocatalysts exhibiting optimized charge transfer pathways and amplified surface reactivity. The bimetallic Au-Bi network collaboratively forms multi-scale Schottky junctions, effectively promoting the separation of photogenerated electron-hole pairs while simultaneously enhancing visible-light absorption via localized surface plasmon resonance effects. Concurrently, the in situ formation of 0D Au-Bi nanodots and heteromorphic 1D/2D Bi 2 WO 6 during reduction sintering induces abundant oxygen vacancies, promoting oxygen activation and reactive oxygen species generation. The multidimensional 0D/1D/2D Au-Bi/Bi 2 WO 6 photocatalyst rapidly and thoroughly degrades acetaldehyde, achieving degradation rates 13.2-fold and 5.92-fold higher than those of 1D/2D Bi 2 WO 6 and 1D/2D Bi-Bi 2 WO 6 , respectively. Moreover, this catalyst maintains exceptional stability across five consecutive cycles. This work pioneers an innovative methodology for designing high-performance heterogeneous photocatalysts.
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 42
·33297-33310
·
IF 4.4
Li Mingzhao,Cui Kaihua,Wang Jing,Yao Shaowei
When metallic bismuth (Bi) is adopted directly as anode materials for sodium-ion batteries (SIBs), severe volumetric variation emerges during the repeated alloying/dealloying redox reactions. Such structural evolution ultimately triggers electrode structural pulverization and rapid capacity fading of the batteries. Herein, Bi-based metal-organic framework (Bi-MOF) precursors were fabricated via a facile solvothermal strategy. Porous Bi@C composites with tunable morphologies were further synthesized by regulating solvent volume ratios and thermal treatment temperatures. On the one hand, MOF-derived nanoporous carbon frameworks construct abundant conductive pathways for ion and electron migration, thereby boosting the comprehensive electrochemical properties of the as-prepared composites. On the other hand, the electrochemically active Bi species are spatially confined and stabilized within the carbon matrix. This confinement effect efficiently alleviates the inherent volumetric expansion of Bi, and accordingly improves the long-term cycling stability of electrode materials. Among all samples, the optimized Bi@C-100:30-800 electrode delivers superior electrochemical performance. It retains a high reversible specific capacity of 443.6 mAh g -1 after 500 long-term cycles at a current density of 500 mA g -1 . Notably, a reversible specific capacity of 416.5 mAh g -1 can still be achieved after 1000 cycles at 1 A g -1 , accompanied by a coulombic efficiency of 99.9%. Such remarkable electrochemical merits endow the material with promising application potential in advanced sodium-ion batteries.
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DOI
高影响因子
Materials
·
2026
·Vol. 19
·期 17
·3771
·
IF 3.7
Guodong Liu,Shenghui Lu,Bo Qin,Zhangshun Ruan,Yuhui Wang,Lu Li,Xiaogang Fu,Naiqin Zhao
The Bi/Bi2O3-type oxygen sensor is extensively employed for oxygen monitoring in liquid lead-bismuth eutectic (LBE)-cooled reactors, yet its low-temperature measurement accuracy remains a critical bottleneck limiting engineering deployment. This study aims to extend the lower operating temperature limit of the sensor through synergistic optimization of the reference electrode and solid electrolyte. The effects of the Bi/Bi2O3mass ratio, filling amount, and yttria-partially stabilized zirconia (YPSZ) electrolyte wall thickness on sensor performance were systematically investigated over 300–600 °C. Electrochemical impedance spectroscopy and finite element simulations (COMSOL Multiphysics®6.3, COMSOL Inc., Stockholm, Sweden) were used to elucidate the underlying mechanisms. The results show that the optimized sensor with a Bi/Bi2O3mass ratio of 95:5, a filling amount of 10 g, and a YPSZ wall thickness of 1.5 mm extended the stable operating limit from 350 °C to 300 °C, achieving a relative electromotive force error of 3.13% at 300 °C and maintaining over 4000 h of drift-free service. The improved low-temperature accuracy is attributed to the reduced oxygen ion migration activation energy (0.48 eV) and lower bulk impedance of the thick-walled YPSZ after high-temperature activation. These findings provide a material optimization strategy and theoretical basis for wide-temperature-range, long-lifetime oxygen sensing in lead-based reactors.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
·
IF 9.6
Wenlong Zhang,Rong Zhong,Jiake Li,Hedong Jiang,Xin Liu,Pingchun Guo,Xueguo Zhao,Yanxiang Wang
For NiCo 2 O 4 supercapacitor electrode materials, simultaneously improving energy density and long-term cycling performance remains a challenge. This is because the lower conductivity and the lattice distortion induced during cycling restrict the utilization of active sites and cycling stability. In this work, a binder-free Bi-doped NiCo 2 O 4 urchin-like electrode was grown in situ on nickel foam by a hydrothermal method followed by heat treatment, and the regulatory effect of Bi incorporation on the structure and electrochemical behavior of the NiCo 2 O 4 urchin-like electrode was investigated. Appropriate Bi doping can reconstruct the local coordination environment, thereby inducing the formation of oxygen vacancies and increasing the specific surface area and electrochemical performance, thus accelerating ion/electron transport and improving the reversibility of the Faradaic reaction. Results show that the 5% Bi-NiCo 2 O 4 electrode exhibits optimal electrochemical performance, with a specific capacitance of 2866.6 F g −1 at 0.5 A g −1 , and the ionic conductivity increases by 34.8% compared to the undoped sample. Furthermore, an asymmetric supercapacitor device (Bi-NCO//C800) was assembled using Bi-NiCo 2 O 4 as the positive electrode and polymer-derived porous carbon (C800) as the negative electrode. The device demonstrates an outstanding specific capacitance of 154.7 F g −1 at 0.5 A g −1 , achieves a maximum energy density of 48.4 Wh kg −1 and a maximum power density of 7500 W kg −1 , and maintains 115% capacitance retention over 11,000 cycles, exhibiting excellent cycling stability. Download: Download high-res image (130KB) Download: Download full-size image
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DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·
IF 6.2
Yang Xiao,Jie Li,Yan Yang,Yida Lei,Yanlin Ma,Yingli Liu
Garnet-type ferrites Bi 1.2 Ca 3 x Y 1.8–3 x Zr x V x Fe 5–2 x O 12 ( x = 0.1–0.6) were synthesized via solid-state reaction, with Bi–Ca ions predominantly occupying dodecahedral c-sites. The phase stability and microstructure were significantly improved through Ca-Zr-V multi-ion doping, which served as the foundation for excellent magnetic and dielectric properties. The dielectric constant (ε r > 22) was increased by the strong spin-orbit coupling and high polarizability of Bi 3 + . The Bi 3+ -induced magnetocrystalline anisotropy was suppressed by Zr 4+ and V 5+ , which lowered the ferromagnetic resonance (FMR) linewidth (ΔH) to 73.06 Oe. Grain refinement shortened the spin-wave propagation path, leading to a maximum spin-wave linewidth (ΔH k ) of 13.10 Oe. At x = 0.50, optimal properties were achieved (ε r = 22.43, tanδ ε = 1.26 ×10 - 3 , ΔH = 73.06 Oe, ΔH k = 10.30 Oe, M s = 15.60 emu/g), and the synergistic optimization of high dielectric constant, low loss, and broad spin-wave linewidth was realized for the first time in ferrites for miniaturized circulators.
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DOI
高影响因子
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