MATERIALS & DESIGN
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2023
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IF 8.4
Yu Meng,Congcong Wang,Lijie Song,Zewen Su,Yaojun Jiang,Yanbang Lian,Gongxun Bai,Qingxia Fan
The use of functional nanomaterials to realize tumor therapeutic therapy has received considerable attention. However, a single type of nanomaterial usually can only achieve one specific function, and may cause biosafety problems due to poor metabolism. In this work, we have designed a kind of nanocomposite film based on Bi 2 Se 3 nanosheets and carbon nanotubes, which can achieve efficient photothermal conversion and reactive oxygen species generation under near-infrared laser irradiation. Moreover, the developed films showed good biocompatibility in vivo. The multifunctional films showed remarkable therapeutic effects under 808 nm excitation with 0.3 W/cm 2 , which avoiding the introduction of nano-reagents into the mice and excessive laser power damage. Our work will provide reference for the use of nanomaterials with heterojunctions in synergistic therapy strategies of photothermal and photodynamic therapy.
研究领域:
生物医学工程
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纳米医学
·
肿瘤治疗
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Hao Zhou,Lin Che,Zhaoming Guo,Minghuo Wu,Wenqing Li,Weiping Xu,Lifen Liu
Bismuth selenide (Bi2Se3) attracts a lot of attention nowadays due to its unique electronic and thermoelectric properties. In this study, fabrication of Bi2Se3 nanosheets by selenite-reducing bacterium (SeRB) was first reported. Morphology, size, and location of the biogenic Bi2Se3 are bacteria-dependent. It is difficult to separate Bi2Se3 generated by Bacillus cereus CC-1 (Bi2Se3-C) from the biomass because of strong interaction with the cell membrane. However, Bi2Se3 produced by Lysinibacillus sp. ZYM-1 (Bi2Se3-Z), is highly dispersed in extracellular space with high stability. Further characterization by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM) on Bi2Se3-Z indicates that the product is a rhombohedral-phase, ultrathin nanosheet-like structure with an average size of ∼100 nm. Subsequently, the photothermal performance of Bi2Se3-Z with the irradiation of 808 nm near-infrared (NIR) laser was determined. When the Bi2Se3-Z concentration was 26 mg L–1, and irradiation power was 2 W, the photothermal conversion efficiency was calculated as 30.7%. At the same condition, 100% of the MCF7 and A549 cancer cells were killed within 10 min of irradiation in vitro. Moreover, using 1% (v/v) PVP as surfactant, a novel nanodumbbell structure of Bi2Se3 was obtained. Overall, this bacteria-driven Bi2Se3 fabrication paves a new way for biocompatible photothermal nanomaterials.
研究领域:
材料科学
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纳米技术
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癌症治疗
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微生物学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Ruixia Jin,Xiaoman Yu,Haiming Xu,Huan Xia,Quanpeng Zhao,Huimei Tian
Ameliorating photocatalytic performance by enhancing carrier transport efficiency is an appealing strategy. Thus, Bi 2 Se 3 /BiOCl heterostructure with appropriate oxygen vacancies (OVs) was successfully fabricated by using of ultrasound approach. The results discern that BOC-2 can degrade 81 % Oxytetracycline hydrochloride (OTC, 20 mg/L) within 3 h, which is 3.46 and 5.71 times higher than BiOCl and Bi 2 Se 3 , respectively. Mechanism studies verified that abundant photo-generated electrons/thermally excited electrons are quickly transferred from Bi 2 Se 3 to BiOCl via the electron transport channels formed by interface oxygen vacancies (IOVs) under the synergy of interface/thermal electric field, and thus OTC was effectively mineralizing to CO 2 and H 2 O under the cooperation of ·O 2 – (65.71 %) and h + (26.33 %). Meanwhile, the contribution of the interface/thermal electric field to photocatalytic activity was firstly established. Moreover, the pollutant degradation pathways and the intermediates toxicity were systematically researched by DFT theoretical calculations and experiments. This work offers an innovation strategy to mend photocatalytic activity by boosting carrier transport efficiency under the collaborative of interface/thermal electric field.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
Nano Energy
·
2022
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IF 19.069
Lin Zhang,Hongjing Shang,Daxing Huang,Bowei Xie,Qi Zou,Zhaoshun Gao,Jiangli Xue,Hongwei Gu,Fazhu Ding
Due to the limited thermoelectric performance of polymers and intrinsic rigidness of inorganic materials, it is difficult to obtain n-type thermoelectric materials and devices with low-cost, excellent flexibility, and high performance. In this work, we have successfully synthesized n-type flexible free-standing thermoelectric films by a low-cost solvothermal method, which is composed of Bi 2 Se 3 nanosheets and single-wall carbon nanotubes (SWCNTs). Bi 2 Se 3 nanosheets with excellent crystallinity and rhombohedral morphology were grown on SWCNTs. The optimized Bi 2 Se 3 /SWCNTs composite films exhibited a high electrical conductivity of 292.7 S cm −1 and a Seebeck coefficient of − 42.4 μV K −1 at room temperature, eventually achieving an improved power factor of 52.7 μW m −1 K −2 . Furthermore, the composite films exhibited excellent flexibility due to the interweaving of Bi 2 Se 3 nanosheets with SWCNTs, where the thermoelectric performance remained almost unchanged after 5000 bending cycles around a 3.5 mm radius rod . A thermoelectric device, composed of the optimized films, was constructed to further show the practicality, which generated a voltage and a power density of 11.5 mV and 86.2 μW cm −2 at a temperature gradient of 58 K, respectively. This work can provide support for the preparation of other n-type free-standing thermoelectric films with both high thermoelectric performance and excellent flexibility.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
ANALYTICAL LETTERS
·
2020
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IF 1.467
Wanxin Dong,Xinxin Mo,Yu Wang,Qin Lei,He Li
In this work, a novel flexible photoelectrochemical immunosensor is developed to determine cardiac troponin I (cTnI) in serum. The flower-like ZnIn2S4 nanospheres (ZIS), as signal amplification material, were successfully synthesized by a solvothermal method. The ZIS and Bi2Se3 were modified on the indium tin oxide- polyethylene terephthalate (ITO-PET) electrode, which effectively accelerates the electronic transition and improved the photocurrent conversion efficiency (signal on). However, the binding of antigen–antibody proteins blocks the electron transfer, resulting in a greatly reduced photocurrent (signal off). By adding the second antibody modified by CdSe quantum dots (CdSe QDs-Ab2), the photocurrent is increased (signal on). The constructed immunosensor has a linear range from 0.08 to 40 ng/mL with a detection limit of 0.026 ng/mL, which shows excellent selectivity, high sensitivity, and good stability. The photoelectrochemical immunosensor has broad application prospects for the clinical examination of myocardial infarction.
研究领域:
生物医学工程
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临床检验
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DOI
高影响因子
AIP Advances
·
2019
·Vol. 9
·期 2
·
IF 1.579
Wang Qingkai,Wu Xinghua,Wu Leiming,Xiang Yuanjiang
Compared with homogeneous two-dimensional materials, two-dimensional nanomaterial heterostructures which consist of different kinds of two-dimensional materials exhibit stronger light-matter interaction. The topological insulator of Bi 2 Se 3 -Bi 2 Te 3 heterostructures were synthesised by two-step reaction proceeding. The reaction arised in two steps: at first, Bi 2 Se 3 nanosheets were prepared in the solvent of ethylene glycol (EG); secondly, Bi 2 Te 3 was epitaxial grown on the Bi 2 Se 3 nanosheets to form heterostructure materials. The spatial self-phase modulation (SSPM) effect of 457 nm , 532 nm and 671 nm was achieved by dispersing the as-prepared Bi 2 Se 3 -Bi 2 Te 3 heterostructure materials into ethanol as an optical medium. Furthermore, based on the effect of SSPM, a device called all-optical switching was also realized. As an interesting nonlinear optical materials, topological insulator Bi 2 Se 3 -Bi 2 Te 3 heterostructures might be an effective proposal for photonics devices such as optical switchings, optical modulators, photodetectors, etc.
研究领域:
材料科学
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光学工程
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纳米技术
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产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2025
·
IF 5.5
Evans Kibet,Yingchun Dong,Yuanting Yu,Wen Niu,Yiling Tan,Hangyu Liu,Jiongyue Hao,Weijie Qu,Yong Zhou,Wei Hu,Simon Mugo,Bingsheng Du,Anthony Kiroe,Yong He
The development of high-performance and low-operating-temperature gas sensors is critical for real-time environmental and industrial process monitoring applications. In this study, we report the synthesis and application of a bismuth-based metal–organic framework (Bi-MOF)-derived Bi2Se3 sensor for the detection of NO2 at room temperature. Bi2Se3 was synthesized through a controlled selenization process that resulted in synergistic effects between Bi-MOF and Bi2Se3. The changes in morphology and surface physicochemical properties caused by the selenization process led to the tunability of the NO2 gas sensing properties. The Bi-MOF-derived Bi2Se3 sensitive materials were characterized using XRD, SEM, transmission electron microscopy, X-ray photoelectron spectroscopy, electron paramagnetic resonance, and BET to analyze their morphology, composition, pore structures, intensity of Se vacancies, and surface properties. The gas sensing performances were assessed under various NO2 concentrations, evaluating the sensitivity, selectivity, and resistance to humidity. Our findings show that the Bi2Se3 sensor exhibits excellent sensitivity and selectivity toward NO2 at room temperature. The best sensor showed a response of 32.1% toward 0.5 ppm of NO2 with a response/recovery time of 60.1/365.4 s, making it a promising candidate for NO2 monitoring. This study provides significant insights into the potential of Bi-MOF-derived Bi2Se3 materials in gas sensing, laying the groundwork for further research to optimize these sensors for practical applications.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Xiangqian Kong,Wenyan Xia,Yuruo Qiu,Bingrui Zhao,Yuan Zhao,Wei Ma
Polystyrene (PS) plastics were potentially present in consumer products through the use of plastics packaging. The migration and enduring presence for bioaccumulation posed significant threats to human health and the environment. It was significant to develop a simple and reliable approach for sensitive PS plastics detection. In this study, Au-Bi 2 Se 3 hybrid nanosheets (NSs) were designed and utilized as SERS probes for the detection of PS plastics. The electron transfer from Bi 2 Se 3 to AuCl 4 − induced the formation of Au NPs on the surface of thin Bi 2 Se 3 NSs. Au-Bi 2 Se 3 hybrid NSs were found to display enhanced SERS activity by using PS plastics as Raman tags. Besides the unique electromagnetic enhanced mechanism from Au NPs, the introduction of Bi 2 Se 3 supported the Dirac plasmon polaritons in electromagnetic modes, and Bi 2 Se 3 with high dielectric constants inhibited the decay of electromagnetic waves. Au-Bi 2 Se 3 hybrid NSs engineered SERS sensor achieved stable and sensitive detection of PS plastics in essence liquid. Different sized PS plastics ranging from 89.3 nm to 1.48 μm were detected with the LODs of ppm levels. These findings highlight the potential of Au-Bi 2 Se 3 hybrid NSs as effective and universal SERS substrates for detecting different sized plastics in real samples.
研究领域:
纳米技术
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分析化学
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 46
·21888-21895
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IF 3.591
Hengjie Qin,Ying Lv,Ping Li,Meixia Xiao,Haiyang Song,Qian Zhang,Jialun Yang
A series of Bi2Se3@C materials were prepared through a bismuth metal organic framework (CAU-17) assisted hydrothermal selenization method followed by carbonization, which have been found to be useful as electrode materials for supercapacitor application. The Bi2Se3@C obtained below 500 °C seems to show an excellent specific capacity of 565.9 C g−1 at a current density of 1 A g−1. Furthermore, the performance of Bi2Se3@C in symmetrical supercapacitors (SSCs) is also systemically investigated, and the SSC device achieves a maximum energy density of 39.3 W h kg−1 at a power density of 639.9 W kg−1 and maintains 90.5% of this capacity over 1000 cycles.
研究领域:
材料科学
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电化学
·
能源存储
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
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IF 4.229
Xiaoyang Wang,Xu Yang,Lei Miao,Jie Gao,Liangpeng Wu,Nan Wang,Xinjun Li
Exploring and developing novel semiconductor photo-catalysts for visible-light-driven water splitting are of great scientific significance to solve energy and environmental problems. Herein, Bismuth Selenide (Bi 2 Se 3 ) nanosheets decorated with a thin layer of Bi 2 SeO 2 to form Bi 2 Se 3 /Bi 2 SeO 2 nanocomposites were successfully prepared using a conventional reflux and heating method. Fabricated Bi 2 Se 3 /Bi 2 SeO 2 heterojunctions were characterized via X-ray diffraction, scanning electron microscopy, high resolution transmission electron microscopy and X-ray photoelectron spectroscopy. It has revealed that, the thickness of outer Bi 2 SeO 2 layer can be tuned upon the annealing temperatures, which strongly influenced the performance of catalyst towards water splitting performances. Annealed at 200 °C, the Bi 2 Se 3 /Bi 2 SeO 2 heterojunction with ∼5 nm of Bi 2 SeO 2 layer yielded the highest hydrogen production rate of 136 μmol g −1 h −1 . This enhanced photo-catalytic activity was ascribed to the synergy effect between the Bi 2 Se 3 /Bi 2 SeO 2 layer, increased the visible light absorbance capacity, adjustment of the band gap and accelerate the electron-hole separation efficiency. The results represent a simply solution-based method towards a material with high photo-catalytic performance through the appropriate regulation of the oxidation degree of Bi 2 Se 3 nanosheets, promising their industrial applications.
研究领域:
材料科学
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光化学
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催化
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纳米技术
·
能源材料
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2017
·Vol. 27
·期 48
·1703864
·
IF 12.124
Jing Yang,Chunde Wang,Huanxin Ju,Yuan Sun,Shiqi Xing,Junfa Zhu,Qing Yang
MoSe 2 as a typical transition metal dichalcogenide holds great potential for energy storage and catalysis but its performance is largely limited by its poor conductivity. Bi 2 Se 3 nanosheets, a kind of topological insulators, possess gapless edges on boundary and show metallic character on surface. According to the principle of complementary, a novel integrated quasiplane structure of MoSe 2 /Bi 2 Se 3 hybrids is designed with artistic heteronanostructures via a hot injection in colloidal system. Interestingly, the heteronanostructures are typically constituted by single-layer Bi 2 Se 3 hexagonal nanoplates evenly enclosed by small ultrathin hierarchical MoSe 2 nanosheets on the whole surfaces. X-ray photoelectron spectroscopy investigations suggest obvious electron transfer from Bi 2 Se 3 to MoSe 2 , which can help to enhance the conductivity of the hybrid electrode. Especially, schematic energy band diagrams derived from ultraviolet photoelectron spectroscopy studies indicate that Bi 2 Se 3 has higher E F and smaller Φ than MoSe 2 , further confirming the electronic modulation between Bi 2 Se 3 and MoSe 2 , where Bi 2 Se 3 serves as an excellent substrate to provide electrons and acts as channels for high-rate transition. The MoSe 2 /Bi 2 Se 3 hybrids demonstrating a low onset potential, small Tafel slope, high current density, and long-term stability suggest excellent hydrogen evolution reaction activity, whereas a high specific capacitance, satisfactory rate capability, and rapid ions diffusion indicate enhanced supercapacitor performance.
研究领域:
材料科学
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电化学
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纳米技术
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能源存储与转换
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Qingyun Liu,Li Yang,Liangliang Wang,Zimu Li,Yongkang Yu,Yi Zheng,Daizheng Lian,Xianming Li,Hongzhong Chen,Lin Mei,Xiaowei Zeng,Nansha Gao
To resolve poor accumulation caused by systemic administration, injectable and responsive hydrogels are the prospective drug delivery systems for localized tumor treatment, owning to negligible invasiveness and accurate administration. Herein, an injectable hydrogel, based on dopamine (DA) crosslinked hyaluronic acid and Bi 2 Se 3 nanosheets (NSs) loading with doxorubicin (DOX) coated with polydopamine (Bi 2 Se 3 -DOX@PDA), was developed for synergistic chem-photothermal cancer therapy. The ultrathin functional Bi 2 Se 3 -DOX@PDA NSs could be responsive to the weak acidic condition and photothermal effect under NIR laser irradiation, achieving controlled release of DOX. Moreover, nanocomposite hydrogel based on hyaluronic acid matrix could be precisely administrated through intratumoral injection since its injectability and self-healing capacity, remaining at injected sites for at least 12 days. Furthermore, the excellent therapeutics effect of Bi 2 Se 3 -DOX@PDA nanocomposite hydrogel was demonstrated on 4 T1 xenograft tumor with outstanding injectability and negligible systemic side-effect. In short, the construction of Bi 2 Se 3 -DOX@PDA nanocomposite hydrogel paves a prospective path for local treatment of cancers.
研究领域:
癌症治疗
·
纳米技术
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药物递送系统
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材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）