LANGMUIR
·
2024
·
IF 3.7
Yujiu Jiang,Peng Zhu,Jiangyue Bai,Zihang Wang,Xiuxia Li,Shiqi Xu,Chunpan Zhang,Shanshan Li,Tinglu Song,Fan Tan,Zhiwei Wang,Aiqin Luo,Bingteng Xie,Yanbo Yang,Junfeng Han
Accurate and rapid detection of the causative agent of a disease is of great importance in controlling the spread of the disease. This work developed a biosensor with the Bi2Te3 family of topological insulators for detection of the SARS-CoV-2 virulence factor. The Bi2Te3 family is a three-dimensional topological insulator material with topologically protected surface states; the presence of these surface states facilitates charge transfer between the electrode and electrolyte interface. Compared with the detection performance of Bi2Se3, BiSbTeSe2, and a trivial insulator like Sb2Se3, Bi2Te3 exhibits superior characteristics. A Bi2Te3 electrochemical detection platform is utilized to fabricate a sensor that can detect SARS-CoV-2 DNA, RNA, and antigen for label-free target detection. The concentration range of DNA detection by the biosensor using Bi2Te3 is between 1.0 × 10–15 and 1.0 × 10–10 M, and the detection limit can reach 1.41 × 10–16 M. Furthermore, it exhibits excellent selectivity and maintains good stability even after being stored for 14 days. This study provides a new way to apply topological insulator materials in the field of biosensors and use their unique electronic structure to improve the accuracy and speed of disease detection and diagnosis.
研究领域:
生物医学工程
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材料科学
·
病毒学
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产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2024
·
IF 15.8
Yixin Hou,Pengfei Ma,Fei Long,Mingyang Liu,Yifan Zheng,Li Sun,Junjie Shi,Ke Niu,Jun Su,Yanan Ma,Yihua Gao
Air-rechargeable batteries integrating energy harvesting, conversion, and storage provide the most portable and popular approach to self-charging power systems. However, air-rechargeable batteries are currently mostly aqueous Zn-based battery systems in which it has remained a significant challenge to solve the low discharge capacities and poor cycling stability of chemical self-charging due to continuous insertion/extraction of large-size hydrated Zn2+. Herein, efficient Bi2Te3@C cathodes with an active carbon paper substrate are developed. Further ex situ characterization analysis confirms the energy storage mechanism regarding the coexistence of H+/Zn2+ coinsertion and conversion reaction in the aqueous Zn||Bi2Te3@C battery. Benefiting from the fast dynamics process attributed to the unique mechanism, a reliable energy supply is provided even in an extended temperature range from −10 to 45 °C. More importantly, Bi2Te3@C cathodes boost the superior and repeatable air-rechargeability. A discharge capacity of up to 264.20 mA h g–1 at 0.30 A g–1 is manifested after self-charging for 11.00 h. In addition, two quasi-solid-state battery devices are connected in series to continuously power a timer. After the device is discharged and then air self-charged for just a few seconds, an LED is lit.
研究领域:
材料科学
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电化学
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能源存储与转换
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产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2025
·
IF 16
Hui Long,Yongxin Qian,Shuangfu Gang,Wenguang Zhang,Boyu Yang,Yingchao Wei,Bo Wang,Wang Li,Qinghui Jiang
Intensifying the severity of electromagnetic (EM) pollution in the environment represents a significant threat to human health and results in considerable energy wastage. Here, we provide a strategy for electricity generation from heat generated by electromagnetic wave radiation captured from the surrounding environment that can reduce the level of electromagnetic pollution while alleviating the energy crisis. We prepared a porous, elastomeric, and lightweight Bi2Te3/carbon aerogel (CN@Bi2Te3) by a simple strategy of induced in situ growth of Bi2Te3 nanosheets with three-dimensional (3D) carbon structure, realizing the coupling of electromagnetic wave absorption (EMA) and thermoelectric (TE) properties. With ultra-low thermal conductivity (0.07 W m–1 K–1), the CN@Bi2Te3 composites achieved a minimum reflection loss (RL) of 51.30 dB and an effective absorption bandwidth (EAB) of 6.20 GHz at an optimal thickness of 2.8 mm. Additionally, under a temperature gradient of 80 K, the flexible thermoelectric generator (FTEG) system generates a maximum output power of 42.2 μW. By absorbing 2.45 GHz microwaves to build the temperature difference, the EMA-TE-coupled device achieves an optimal Uoc of 38.4 mV, a short-circuit current of 1.03 mA, and an output power of 9.87 μW upon a radiation time of 50 s. This work establishes a potential pathway for further recycling electromagnetic energy in the environment, which is also promising for the preparation of large-area flexible EM to electrical energy conversion devices.
研究领域:
材料科学
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能源与环境科学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xiaona Chen,Linan Feng,Penglu Yu,Chan Liu,Jinle Lan,Yuan-Hua Lin,Xiaoping Yang
Flexible thermoelectric materials and devices have gained wide attention due to their capability to stably and directly convert body heat or industrial waste heat into electric energy. Many research and synthetic methods of flexible high-performance p-type thermoelectric materials have made great progress. However, their counterpart flexible n-type organic thermoelectric materials are seldom studied due to the complex synthesis of conductive polymer and poor stability of n-type materials. In this work, bismuth tellurium (Bi2Te3) nanosheets are in situ grown on single-walled carbon nanotubes (SWCNTs) assisted by poly(vinylpyrrolidone) (PVP). A series of flexible SWCNTs@Bi2Te3 composite films on poly(vinylidene fluoride) (PVDF) membranes are obtained by vacuum-assisted filtration. The high electrical conductivity of 253.9 S/cm, and a corresponding power factor (PF) of 57.8 μW/m·K2 is obtained at 386 K for SWCNTs@Bi2Te3-0.8 film. Moreover, high electrical conductivity retention of 90% can be maintained after a 300-cycle bending test and no obvious attenuation can be detected after being stored in an Ar atmosphere for 9 months, which exhibits good flexibility and excellent stability of the SWCNTs@Bi2Te3 composite films. This work shows a convenient method to fabricate n-type and flexible thermoelectric composite film and further promotes the practical application of n-type flexible thermoelectric materials.
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
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 33
·期 3
·2210098
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IF 19.924
Siyu Wang,Yuqian Qiao,Xiangmei Liu,Shengli Zhu,Yufeng Zheng,Hui Jiang,Yu Zhang,Jie Shen,Zhaoyang Li,Yanqin Liang,Zhenduo Cui,Paul K. Chu,Shuilin Wu
Temperature variation-induced thermoelectric catalytic efficiency of thermoelectric material is simultaneously restricted by its electrical conductivity, Seebeck coefficient, and thermal conductivity. Herein, Bi 2 Te 3 nanosheets are in situ grown on reduced graphene oxides (rGO) to generate an efficient photo-thermoelectric catalyst (rGO-Bi 2 Te 3 ). This system exhibits phonon scattering effect and extra carrier transport channels induced by the formed heterointerface between rGO and Bi 2 Te 3 , which improves the power factor value and reduces thermal conductivity, thus enhancing the thermoelectric performance of 2.13 times than single Bi 2 Te 3 . The photo-thermoelectric catalysis of rGO-Bi 2 Te 3 significantly improves the reactive oxygen species yields, resulting from the effective electron–hole separation caused by the unique thermoelectric field and heterointerfaces of rGO-Bi 2 Te 3 . Correspondingly, the electrospinning membranes containing rGO-Bi 2 Te 3 nanosheets exhibit high antibacterial efficiency in vivo (99.35 ± 0.29%), accelerated tissue repair ability, and excellent biosafety. This study provides an insight into heterointerface design in photo-thermoelectric catalysis.
研究领域:
材料科学
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生物医学工程
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纳米医学
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产品关联
DOI
高影响因子
Solar RRL
·
2022
·Vol. 6
·期 10
·2200570
·
IF 9.173
Qiyao Guo,Yuanyuan Zhao,Qunwei Tang,Jialong Duan
A solution to breaking through the Shockley–Queisser efficiency limit of solar cells is to increase the irradiation intensity beyond one standard sun by means of fabricating concentrator photovoltaics (CPVs). Herein, it is demonstrated that the power conversion efficiency (PCE) of carbon-electrode, all-inorganic CsPbBr 3 perovskite solar cell (PSC) can be enhanced to 10.08% under 5 suns from 8.94% under one sun. The efficiency improvement mainly contributes to the especially boosted open-circuit voltage ( V oc ) up to 1.643 V, which is delivered by the high-irradiation enlarged quasi-Fermi-level splitting in CsPbBr 3 perovskite film. The substantially detrimental heat induced by carbon electrode owing to its full-spectral absorbance to light is further used by integrating a Bi 2 Te 3 thermoelectric generator (TEG) into this all-inorganic CsPbBr 3 PSC to play the role of refrigerant under concentrated light condition. The CsPbBr 3 /Bi 2 Te 3 -integrated device achieves a PCE of 12.46% with an ultrahigh V oc of 2.114 V by the photovoltaic–thermoelectric principle. More importantly, the integrated solar cell maintains over 90% of the initial efficiency after 150 h irradiation under 5 suns, suggesting a great potential to enhance efficiency by fabricating integrated perovskite/thermoelectric devices.
研究领域:
材料科学
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能源技术
·
光伏技术
✓ 已验证
DOI
高影响因子
APL Materials
·
2018
·Vol. 6
·期 3
·
IF 4.127
Sun Min,Qian Qi,Tang Guowu,Liu Wangwang,Qian Guoquan,Shi Zhenguo,Huang Kaimin,Chen Dongdan,Xu Shanhui,Yang Zhongmin
Bi 2 Te 3 -based materials have been reported to be one of the best room-temperature thermoelectric materials, and it is a challenge to substantially improve their thermoelectric properties. Here novel Bi 2 Te 3 core fibers with borosilicate glass cladding were fabricated utilizing a modified molten core drawing method. The Bi 2 Te 3 core of the fiber was found to consist of hexagonal polycrystalline nanosheets, and polycrystalline nanosheets had a preferential orientation; in other words, the hexagonal Bi 2 Te 3 lamellar cleavage more tended to be parallel to the symmetry axis of the fibers. Compared with a homemade 3-mm-diameter Bi 2 Te 3 rod, the polycrystalline nanosheets’ preferential orientation in the 89- μ m-diameter Bi 2 Te 3 core increased its electrical conductivity, but deduced its Seebeck coefficient. The Bi 2 Te 3 core exhibits an ultrahigh ZT of 0.73 at 300 K, which is 232% higher than that of the Bi 2 Te 3 rod. The demonstration of fibers with oriented nano-polycrystalline core and the integration with an efficient fabrication technique will pave the way for the fabrication of high-performance thermoelectric fibers.
研究领域:
材料科学
·
热电学
·
纳米材料
·
光纤技术
✓ 已验证
产品关联
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
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Ning Chen,Dong Yang,Zi-Long Zhang,Jun-Hui Su,Wen-Yu Yang,Fu Li,Guang-Xing Liang,Jing-Ting Luo,Yue-Xing Chen,Zhuang-Hao Zheng
Flexible thermoelectric (TE) materials are promising candidates for powering wearable electronics and self-sustained microdevices. Here, we report the synthesis of S-doped Bi 2 Te 3 flexible thin films (f-TFs) on polyimide (PI) substrates via a two-step method combining physical vapor deposition and subsequent thermal diffusion. Sulfur incorporation effectively substitutes Te in the Bi 2 Te 3 lattice, leading to lattice contraction and a moderate increase in carrier concentration. Structural analyses reveal that S doping shortens the Bi–Te/S bonds and weakens interlayer van der Waals interactions, facilitating strain relaxation through nanoscale slip. As a result, the 3.8 % S-doped film achieves a peak power factor of 14.8 μW cm −1 K −2 at 300 K and exhibits moderate electrical-conductivity stability under repeated bending, with resistance variation below 10 % after 1000 cycles. These findings demonstrate that thermal diffusion-driven compositional tuning provides a practical approach to enhancing both thermoelectric performance and mechanical flexibility in Bi 2 Te 3 -based f-TFs.
✓ 已验证
产品关联
DOI
高影响因子
Energy & Environmental Materials
·
2025
·
IF 14.1
Xiangdong Shi,Qingtao Chen,Xiaoyun Qin,Xianghai Rao,Sihui Li,Guixia Liu,Jinxian Wang,Xiangting Dong,Dan Luo,Fenghua Chen
Built-in electric field coupled piezoelectric polarization engineering is a promising method to adjust and boost the catalytic performance of photocatalysts. Herein, BiOIO 3 -Bi 2 Te 3 type-II heterojunction piezo-photocatalyst was proposed and prepared by a sequential hydro-solvothermal method. Due to the co-drive of the heterojunction and photothermal-piezoelectric polarization effect certified by piezoelectric force microscopy, COMSOL simulations, and infrared thermography, the photocatalytic degradation performance of the as-prepared BiOIO 3 -Bi 2 Te 3 on rhodamine B was dramatically improved under the co-excitation of visible light and ultrasound compared with under the single light irradiation and the single ultrasonic conditions. Typically, the BiOIO 3 -Bi 2 Te 3 photocatalyst always showed significantly better catalytic degradation performance than the pure Bi 2 Te 3 , BiOIO 3 , and BiOIO 3 /Bi 2 Te 3 mechanical mixtures. Impressively, based on the optimal conditions obtained by systematically studying the effects of temperatures, ultrasound intensities, and inorganic salts on the piezo-photocatalytic rhodamine B degradation, the optimum composite ratio BiOIO 3 -Bi 2 Te 3 -20 piezo-photocatalyst can also effectively remove tetracycline and Cr(VI), and also achieve the purpose of simultaneously removing a mixture of these three pollutants with good recycling stability. Such enhanced catalytic performance was mainly attributed to the disruptions of the electrostatic equilibrium and saturation effects of the built-in electric field under successive ultrasonic and photoinduced co-disturbance, thus enhancing the driving force of separation and migration of photogenerated carriers as verified by electrochemical tests, energy band structure theory, and DFT calculations. Based on which and the sacrificial agent experiments, the photocatalytic degradation mechanism was proposed. This research showcased the significant potential for environmental remediation using solar energy and mechanical energy cooperatively.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2025
·
IF 5.1
Muhammad Umar,Govinda Mandal,Rui Lv,Ruochen Guo,Shunli Yang,Gang Lang,M Awais,Kashmala Gul,M. Sajjad Hasan,Jian Liu
Accurate and sensitive detection of small biomolecules like saccharides in foods and beverages remains challenging due to their difficulty in ionization and the interferences of the fragments derived from the conventional organic matrices in laser desorption/ionization mass spectrometry (LDI-MS). Here, we present a methodology based on Bi2Te3 nanomatrix for LDI-MS, enabling the rapid, specific, and sensitive detection of saccharides such as glucose, 13C-glucose, trehalose, maltotetraose, and maltohexaose. The Bi2Te3 nanomatrix demonstrated efficient analytical performance compared to traditional organic matrices (CHCA and DHB) by reducing spectral interferences and enhancing detection specificity and sensitivity. A strong linear response (R2 = 0.9925) for glucose quantification was achieved, with a low limit of detection (LOD) of 0.25 µg/mL (1.39 pmol). This method was validated through glucose quantification in three commercial soft drinks: one sugar-labeled (soft drink-1) and two sugar-free (soft drinks 2 and 3). Glucose concentrations were 11.11%, 0.01%, and undetectable, with corresponding recovery rates of 107.52%, 73.04%, and 79.66%, respectively. This study provides insights for developing advanced LDI nanomatrices, designed for the specific and sensitive detection of small biomolecules in food and beverage products.
研究领域:
分析化学
·
纳米技术
·
质谱分析
·
食品科学
·
生物分析
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Xianjun Qi,Junying Zhang,Jianing Cai,Xuming Chu,Xiaohong Shao,Zhi-Ling Hou
Neuromorphic devices have gained considerable attention in mimicking the perception and memory of brains. As a type of neuromorphic device, broadband responsive optical synapses are urgently needed. In this work, an artificial optical synapse based on topological insulator Bi 2 Te 3 nanosheets is constructed by a simple solvothermal method, which can be sensitively modulated by wide spectral light from visible to near-infrared. The Bi 2 Te 3 nanosheets were fabricated as a photodetector through a spin-coating route, which exhibits a remarkable photoresponse with a maximum responsivity of 27.4 mA W −1 and a maximum detectivity of 4.21×10 10 Jones. The Bi 2 Te 3 photodetector showed a unique memory effect for light sources with different wavelengths, confirming its potential as an artificial optical synapse. Its photoresponse to infrared light showed no significant difference compared to visible light with higher energy, which lights up the future of developing broadband-responsive optical synaptic devices.
研究领域:
材料科学
·
纳米技术
·
类脑工程
·
光电技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）