Small
·
2024
·Vol. 20
·期 27
·2308590
·
IF 13
Xiang Xu,Ying Wang,Yeqin Ji,Zhijian Chen,Chunhui Lu,Xinlong Xu,Dengxin Hua
Flexible broadband photodetectors are desired but challenging to be fabricated for next-generation wearable intelligent optoelectronic devices. Considering the narrow bandgap and strong light absorption, molybdenum telluride (MoTe 2 ) based photoelectrochemical photodetectors are successfully assembled by liquid phase exfoliation accompanied with the electrophoretic deposited method. This MoTe 2 -based photodetector shows a broadband detection in ultraviolet–near-infrared band, long-term stability within 18000 s, and fast response in millisecond-level (response time≈19 ms, recovery time≈26 ms). More importantly, even though the MoTe 2 photodetector is bent and twisted at a high degree for several hundred times, it still shows excellent flexibility with stable on-off switching characteristics. Additionally, this photodetector displays a good response for rotation angles in the range from 0° to 360°, and the extracted I ph maintain almost the same value approximately 0.97 µA cm −2 , suggesting an omnidirectional detection capability. This work demonstrates the proposed flexible photoanode shows a great potential in future broadband omnidirectional detection systems.
研究领域:
纳米生物医学
·
光电子学
·
材料科学
·
生物传感器
·
可穿戴设备
·
分子诊断
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Leyi Zhang,Xiao Zhao,Yaling Ma,Yu Shu,Rao Zhang,Jianyong Xiang,Bochong Wang,Congpu Mu,Kun Zhai,Tianyu Xue,Fusheng Wen
In this study, the TBG composites (composites of tellurium doped black phosphorus nanoflakes (Te/BP NFs) with graphite nanoflakes (GNFs)) were successfully prepared which showed excellent electromagnetic wave absorption performance. The permittivity and dielectric loss tangent of TBG composites increased with the increase of GNFs content. When the ratio of Te/BP NFs to GNFs was 1:1 (TBG-1–1 composite), the reflection loss reached −10 dB under the thickness range of 1–3 mm and frequency range of 5.25–18 GHz, and the minimum reflection loss was −31.07 dB at the frequency of 4.14 GHz. Moreover, the relationship between minimum reflection loss frequency and thickness of TBG-1–1 composite conformed to the λ/4 impedance matching model. Therefore, the TBG composites have great potential in the application of high-frequency electromagnetic wave fields.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2019
·
IF 4.85
Ya-Ping Gong,Yun-Xiang Ma,Shao-Ming Ying,Jiang-Gao Mao,Fang Kong
Two new indium sulfate tellurites, namely, In2(SO4)(TeO3)(OH)2(H2O) and In3(SO4)(TeO3)2F3(H2O), were synthesized by hydrothermal method in a one-pot reaction. Their pure phase yields have been successfully optimized to 76% and 21%, respectively. In2(SO4)(TeO3)(OH)2(H2O) crystallized in centrosymmetric (CS) space group P21/n, while In3(SO4)(TeO3)2F3(H2O) formed a non-centrosymmetric (NCS) and chiral space group P212121. The CS compound features a 2D layered structure composed of 2D indium oxide layers decorated by sulfate tetrahedra and tellurite groups. The NCS compound displays a 3D network consisting of indium tellurite layers bridged by sulfate tetrahedra. Powder second harmonic generation measurements disclosed that In3(SO4)(TeO3)2F3(H2O) exhibits a weak frequency-doubling efficiency about 11% of the commercial KDP. Its powder laser damage threshold quantity was estimated to be 79.6 MW/cm2, which is about 36 times that of AGS. The two samples present wide optical band gaps of 4.86 and 4.10 eV, respectively, which were determined by Te, In, and O atoms based on density functional theory calculations.
研究领域:
无机化学
·
材料科学
·
光学
✓ 已验证
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 34
·期 20
·2200146
·
IF 32.086
Zhi Zhang,Zhaozheng Wang,Yunkang Chen,Yuan Feng,Sicheng Dong,Han Zhou,Zhong Lin Wang,Chi Zhang
The semiconductor direct-current triboelectric nanogenerator (SDC-TENG) based on the tribovoltaic effect is promising for developing a new semiconductor energy technology with high power density. Here, the first SDC-TENG built using gallium nitride (GaN) and bismuth telluride (Bi 2 Te 3 ) for ultrahigh-power generation is reported. During the friction process, an additional interfacial electric field is formed by continuous contact electrification (CE), and abundant electron–hole pairs are excited and move directionally to form a junction current that is always internally from Bi 2 Te 3 to GaN, regardless of the semiconductor type. The peak open-circuit voltage can reach up to 40 V and the power density is 11.85 W m −2 (average value is 9.23 W m −2 ), which is approximately 200 times higher than that of previous centimeter-level SDC-TENGs. Moreover, compared to traditional polymer TENGs under the same conditions, the average power density is remarkably improved by over 40 times. This study provides the first evidence of CE on the tribovoltaic effect and sets the normalized power density record for TENGs, which demonstrates a great potential of the tribovoltaic effect for energy harvesting and sensing.
研究领域:
材料科学
·
纳米技术
·
能量收集
·
半导体物理
✓ 已验证
DOI
高影响因子
JOURNAL OF NON-CRYSTALLINE SOLIDS
·
2023
·
IF 3.5
Yichen Ye,Yongbao Xiao,Yao Ji,Weichao Wang
Singly Ho 3+ -doped TeO 2 –Ta 2 O 5 –ZnO (TTZ) glass and optical fiber for 2 μm fiber lasers have been investigated. The glass-forming region of the ternary TTZ glass system is determined to study its glass-forming ability and to select an appropriate glass matrix for doping Ho 3+ ions. Upon the excitation of a 1940 nm laser diode (LD), an intense emission at 2.06 μm with a full width at half maximum (FWHM) of 61 nm is observed from the Ho 3+ -doped TTZ glass. The measured lifetime of the Ho 3+ : 5 I 7 level in TTZ glass shows a gradual decrease from 3.5 to 0.98 ms as the dopant concentrations increase from 0.2 to 2 mol%. A large emission cross-section (σ e MC ∼ 4.56 × 10 −21 cm 2 ) and figure of merit (FOM, ∼ 6.83 × 10 −24 cm 2 ·s) are obtained. The Ho 3+ -doped TTZ glass is further fabricated into an optical fiber with an average transmission loss of 0.12 dB/cm at 1310 nm. The results show that singly Ho 3+ -doped TTZ glass and optical fiber are promising candidates for efficient 2 μm fiber lasers.
研究领域:
光学
·
材料科学
·
光子学
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2020
·Vol. 22
·期 17
·9362-9367
·
IF 3.43
Weifeng Huang,Yingcai Zhu,Yong Liu,Lijuan Liu,Changchun Yang,Wei Xu
The quaternary chalcogenides consisting of earth-abundant elements such as Cu2ZnSnSe4 (CZTSe) have promising electrical and optical properties prompting enormous technological interest. Understanding different types of defects including Cu/Zn ordering is believed to be the key point to tackle technological challenges such as a large open circuit voltage deficit in CZTSe. The Te doped Cu2.2Zn0.8SnSe4−xTex (x = 0.01–0.04) were investigated using X-ray absorption fine structure spectroscopy at the Cu, Zn, and Se K-edges as well as at the Te L3-edge. Cu at the zinc site with anti-site defects and oxygen interstitials are identified. The detailed electronic structure upon Te doping is studied, providing insights into the rich defect chemistry present in this compound.
研究领域:
材料科学
·
凝聚态物理
·
无机化学
·
半导体材料
·
光电功能材料
✓ 已验证
DOI
高影响因子
Chem
·
2023
·
IF 23.5
Yiheng Dai,Zhiheng Zhang,Mathias Daniels,Yu Bao,Jun Guan,Shenghan Zhang,Ruihao Zhou,Yizheng Tan,Lichen Liu,Hai Xiao,Shuxun Cui,Huaping Xu
In contrast to other main group elements, group VI elements are rarely observed to form long linear polymer main chains. We reported the synthesis and characterizations of polytelluoxane, a polymer with an inorganic main chain that constitutes tellurium and oxygen, which may bridge the gap between inorganic oxides and macromolecules. Polytelluoxane has a flexible Te–O backbone and can be facilely synthesized and further processed into macroscopic materials. Because of its unique molecular structure, polytelluoxane is a transparency ultraviolet protection optical material and reveals a photocatalytic activity comparable with commercial catalysts. Moreover, polytelluoxane exhibited effective closed-loop recyclability, with a recycle efficiency of approximately 90% and a recycle number exceeding 10. This work provided a prospective candidate for the development of flexible polymer devices and sustainable functional materials.
研究领域:
高分子化学
·
材料科学
·
无机化学
·
光化学
·
可持续材料
·
功能材料
✓ 已验证
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2023
·Vol. 129
·期 12
·1-8
·
IF 2.7
Zhao Nanyin,Wang Kai,Li Jun
Tellurium (Te) is a kind of multifunctional material attracting a great deal of interest. Herein, we described a substrate-free solution process to produce Te nanosheets (Te NSs) and build photodetectors (PDs) of photoelectrochemical (PEC) type based on them. The PDs are self-powered according to the photocurrent density about 0.28 µA cm −2 and the photo responsivity of 3.37 µA W −1 when the optical power is 80.2 mW cm −2 without any extrinsic voltage. They exhibit excellent photo-response switching behaviors with high responsivity (15.8 µA W −1 ) and rapid response time (~ 227 ms of the rise time and ~ 293 ms of the fall time) at 0.6 V potential, as well as great long-term stability and durability (storage in ethanol for 1 month). Simultaneously, we measured the photoelectric response after heating the solution to explore the effect of the solution temperature on the photoelectric properties of Te NSs. At a temperature of 70℃, the enhancement was leveraged to promote the photo-response to 14.3 µA W −1 . This work paved the way for developing higher performance PDs.
研究领域:
材料科学
·
纳米技术
·
光电子学
✓ 已验证
DOI
高影响因子
Toxins
·
2013
·Vol. 5
·期 5
·865-883
·
IF 2.129
Ning Gan,Jing Zhou,Ping Xiong,Futao Hu,Yuting Cao,Tianhua Li,Qianli Jiang
An ultrasensitive electrochemiluminescent immunoassay (ECLIA) for aflatoxins M1 (ATM1) in milk using magnetic Fe3O4-graphene oxides (Fe-GO) as the absorbent and antibody-labeled cadmium telluride quantum dots (CdTe QDs) as the signal tag is presented. Firstly, Fe3O4nanoparticles were immobilized on GO to fabricate the magnetic nanocomposites, which were used as absorbent to ATM1. Secondly, aflatoxin M1 antibody (primary antibody, ATM1 Ab1), was attached to the surface of the CdTe QDs-carbon nanotubes nanocomposite to form the signal tag (ATM1 Ab1/CdTe-CNT). The above materials were characterized. The optimal experimental conditions were obtained. Thirdly, Fe-GO was employed for extraction of ATM1 in milk. Results indicated that it can adsorb ATM1 efficiently and selectively within a large extent of pH from 3.0 to 8.0. Adsorption processes reached 95% of the equilibrium within 10 min. Lastly, the ATM1 with a serial of concentrations absorbed on Fe-GO was conjugated with ATM1 Ab1/CdTe-CNT signal tag based on sandwich immunoassay. The immunocomplex can emit a strong ECL signal whose intensity depended linearly on the logarithm of ATM1 concentration from 1.0 to 1.0 × 105pg/mL, with the detection limit (LOD) of 0.3 pg/mL (S/N= 3). The method was more sensitive for ATM1 detection compared to the ELISA method. Finally, ten samples of milk were tested based on the immunoassay. The method is fast and requires very little sample preparation, which was suitable for high-throughput screening of mycotoxins in food.Keywords:aflatoxin M1;Fe3O4-graphene nanocomposite;cadmium telluride-quantumn dots;milk;electrochemiluminescence immunoassay;mycotoxins
研究领域:
食品科学
·
免疫学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2025
·
IF 4.7
Jiale Xue,Shuyao Wang,Xiande Peng,Zhengyan Lin,Xuehua Dong,Liling Cao,Ling Huang,Guohong Zou
We present two novel antimony(III)-based tellurite sulfate crystals, Sb2(TeO3)(SO4)2-P1̅ (I) and Sb2(TeO3)(SO4)2-P21/c (II), synthesized using a dual lone pair strategy that incorporates Sb3+ and Te4+ ions into a sulfate framework. This approach significantly enhances the birefringence of these compounds, with values of 0.11 and 0.10 at 546 nm, respectively, surpassing those of many previously reported mixed alkali metal/alkaline earth metal sulfates and tellurites. Both compounds also exhibit excellent UV transparency with cutoff edges at 292 and 294 nm, making them promising candidates for short-wave UV optical applications. Structural and theoretical analyses reveal that the enhanced birefringence arises from the synergistic effects of the stereochemically active lone pairs of Sb3+ and Te4+, which contribute to the optical anisotropy. This work highlights the potential of dual SCALP elements in improving the optical properties of sulfate-based crystals and provides new insights into designing high-performance optical materials with tailored properties for advanced UV technologies.
研究领域:
材料科学
·
光学材料
·
无机化学
·
晶体工程
·
光子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materiomics
·
2020
·
IF 5.797
Qiufeng Meng,Haijun Song,Yong Du,Yufei Ding,Kefeng Cai
In this work, poly (3,4-ethylenedioxythiophene):poly (styrenesulfonate) (PEDOT:PSS) coated silver telluride (PC Ag 2 Te) nanorods were prepared by a wet-chemical method using the PEDOT:PSS coated tellurium (PC Te) nanorods as the templates. Flexible PC Ag 2 Te nanocomposite film on polyethersulfone (PES) substrate was prepared through vacuum filtration followed by mechanical pressing process. An optimal PC Ag 2 Te nanocomposite film showed a maximum power factor of 143.3 μW/mK 2 at room temperature and 221.7 μW/mK 2 at 373 K. The electrical conductivity of the PC Ag 2 Te composite film decreased by ∼ 3.3% after bending for 1000 times around a rod with a radius of 5 mm. An eight-leg thermoelectric generator assembled with the optimal PC Ag 2 Te nanocomposite film generated a maximum output power and output density of 209.4 nW and 141.5 μW/cm 2 at a temperature gradient of 30.3 K. This work provides a facile method to prepare thermoelectric materials for flexible thermoelectric generators.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
ACS Nano
·
2025
·
IF 16
Zhengwan Jiang,Wei Zhang,Can Zhu,Zhiyuan Hu,Xinjian Xiang,Dongsheng Cao,Xianwen Wang
Bacterial infections cause great difficulties in the healing process of wound repair and may worsen this condition, seriously jeopardizing human health. Gram-negative bacteria are more problematic sources of infection because of their outer membrane and endotoxins. In this study, copper telluride@sodium alginate-poly(vinyl alcohol) nanofiber/gauze (CuxTe@SA-PVA NF/G) was constructed and applied to Gram-negative bacterium-infected wounds to achieve good anti-infective effects through the powerful antimicrobial mechanism of copper telluride (CuxTe) nanozymes. CuxTe nanoflowers with peroxidase-like (POD-like), oxidase-like (OXD-like), and glutathione peroxidase-like (GSH-Px-like) activities were synthesized via a simple one-pot method to combat bacterial survival by generating reactive oxygen species (ROS) and consuming GSH. The results of in vitro antimicrobial experiments confirmed that the killing effect of CuxTe nanozymes on Gram-negative bacteria far exceeded that on Gram-positive bacteria and that they could effectively eradicate all kinds of Gram-negative bacteria and disrupt the existence of their biofilms. The results revealed that CuxTe nanozymes damage Gram-negative bacteria by inhibiting bacterial dormancy, affecting iron metabolism, inhibiting flagellar motility, and decreasing the production of extracellular polysaccharide (EPS) and lipopolysaccharide (LPS). To further adapt to clinical applications, we used electrostatic spinning technology to prepare CuxTe@SA-PVA NF/G wound dressings with good biosafety, which were applied to Gram-negative bacterium-infected wounds and pressure ulcer-infected sites. Animal experiments revealed that CuxTe@SA-PVA NF/G has good anti-infection effects and promotes wound healing. The transcriptomics results further revealed that CuxTe@SA-PVA NF/G promoted wound healing through potent antimicrobial activity, modulation of the inflammatory response, and stimulation of angiogenesis and cell proliferation. This study successfully developed a CuxTe@SA-PVA NF/G wound dressing with specific killing effects on Gram-negative bacteria, providing a promising approach for the clinical treatment of specific Gram-negative bacterial infections.
研究领域:
纳米技术
·
生物医学工程
·
微生物学
·
材料科学
·
药剂学
·
创伤愈合
·
生物化学
✓ 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）