Journal of Nanomaterials
·
2021
·
IF 2.986
Qilin Pan,Miaomiao Li,Mucang Xiao,Yulu He,Guangyu Sun,Ting Xue,Youhuan Luo,Li Chen,Baoquan Ai,Jianwen Xiong
Titanium dioxide nanoparticles (TiO2-NPs) are highly efficient photosensitizers in traditional photodynamic therapy (PDT). The particle size of TiO2-NPs is small, only about 20 nm. However, the demands of ultraviolet light (UV) excitation feature shallow tissue penetration depth and may lead to severe tissue photon damage. Thus, in this research, TiO2-NPs are modified with semiconductor quantum dots (QDs) CdX (X = S, Te, Se) in various methods, such as ultrasonic, hydrothermal, sol-gel, aqueous phase, and hydrolysis precipitation. The transmission electron microscopy (TEM) images show that the size of CdSe-TiO2 is ranging from 6 to 14 nm. The ultraviolet-visible (UV-Vis) spectrum demonstrates that the CdX (X = S, Te, Se) modification can successfully extend the absorption range of TiO2-NPs into a different visible light region. CdSe QDs have the narrowest band gap compared with CdX (X = S, Te, Se) QDs. Visible light-activated CdSe-TiO2 nanocomposite shows the highest PDT inactivation efficiency toward HL60 cells compared with CdX-TiO2. The photogenerated carrier separation efficiency of CdSe-TiO2 nanocomposite is the highest shown in a fluorescence spectrum (FS). Furthermore, when conjugated with folic acid (FA), the prepared FA-CdX-TiO2 (X = S, Se) exhibits excellent cancer-targeting ability during PDT treatment. Optimum PDT efficiency of FA-CdSe-TiO2 indicates that photocatalytic and targeting ability is much higher than pure TiO2 and CdSe-TiO2. Our results provided a detailed investigation on the PDT performance of CdX (X = S, Te, Se) modified TiO2 and may act as a guide for further design of highly targeted performance visible-light response TiO2-NPs.
研究领域:
纳米技术
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癌症研究
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材料科学
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生物医学工程
·
化学
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DOI
高影响因子
GEOSTANDARDS AND GEOANALYTICAL RESEARCH
·
2023
·
IF 3.8
Yonghai Yuan,Zhixuan Han,Feng Yang,Hongxia Yu,Yinhui Zhang,Meilan Wen
An analytical method to accurately determine trace levels of Se and Te is essential to meet the growing importance of these elements to Earth science research. Herein, an in-house assembled photochemical vapour generation (PVG) unit, instead of normal sample nebulisation, with inductively coupled plasma-mass spectrometry (ICP-MS), was developed for the detection of Se and Te in geological samples. The major parameters that might potentially influence the PVG efficiencies of Se(IV) and Te(IV) were investigated. The unit could fully generate volatile species under 30 s of ultraviolet irradiation in the presence of 15% v / v formic acid, 15% v / v acetic acid and 50 mg l -1 of Co 2+ . Under optimised conditions, the limit of detections (LODs, 3 s , n = 11) of the proposed method were 0.5 ng l -1 for Se and 0.6 ng l -1 for Te. The RSDs of Se and Te were 2.0% and 2.3% (1 μg l -1 , n = 7), respectively. Interference experiments showed that Fe, Ti, V and Cu have certain negative effects, so the standard addition method was used for real sample analysis. Measurement results for eleven CRMs, including soils (GSS-4, GSS-7), sediments (GSD-9, GSD-10) and rocks (GSR-1, GSR-2, GSR-3, GSR-5, AGV-2, GSP-2 and W-2a), were consistent with literature values, and showed better precision, indicating the feasibility of the proposed method for determination of trace Se and Te in geological samples.
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Journal of Energy Chemistry
·
2025
·
IF 14.9
Min Li,Xiuhui Zheng,Han Guo,Xiang Feng,Yunqi Liu,Yuan Pan
The development of single atom catalysts (SACs) with asymmetric active sites by defect regulation provides an encourage potential for oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER), but highly challenging. Herein, N-doped carbon (N-C) anchored atomically dispersed Ni-N 3 site with proximity defects (Ni-N 3 D) induced by Te atoms doping is reported. Benefitting from the inductive effect of proximity defect, the Ni-N 3 D/Te-N-C catalyst performs excellent ORR and HER performance in alkaline and acid condition. Both in situ characterization and theoretical calculation reveal that the existence of proximity defect effect is conducive to lower rate-determining-step energy barrier of ORR and HER, thus accelerating the multielectron reaction kinetics. This work paves a novel strategy for constructing high-activity bifunctional SACs by defect engineering for development of sustainable energy.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Zheng Zhang,Ying Yang,Xuelin Huang,Junhao Dong,Chen Lin,Zhihao Shen,Yunxue Sun,Jiajie Pei,Jingying Zheng,Hongbing Zhan
Low-dimensional Te-based materials exhibited unique and fascinating properties for next-generation electronics. This work presented a versatile vapor-phase strategy for selectively growing diverse Te-based nanomaterials (Te, GaTe, Cu 2 Te) by Te-source designs, with an emphasis on thickness-controlled synthesis and properties of 2D Cu 2 Te flakes. Key to this approach involves molten Te encapsulation to stabilize GaTe for 2D growth and a unique Te sustained-release mechanism via controlled GaTe oxidation, which enabled epitaxial growth of Te nanoribbons and well-aligned Cu 2 Te assisted by complementary Cu foil and forming a Cu-Te alloy. The obtained high-quality 2D Cu 2 Te featured a non-centrosymmetric hexagonal Nowotny phase with pronounced in-plane anisotropic second-harmonic generation signals. Critically, layer thickness as a powerful intrinsic non-volatile parameter for property engineering was further demonstrated. Electrocatalytic hydrogen evolution activity of 2D Cu 2 Te improved systematically with thickness owing to Fermi level upshifts. In contrast, the rectification behavior of the fabricated type-I p-Cu 2 Te/n-MoS 2 heterostructure diodes showed a strong and non-monotonic Cu 2 Te thickness dependence, achieving a high rectification ratio of 1.1 × 10 3 at an optimal 27.0 nm through tailored carrier concentration and interfacial band engineering. Our study provides both flexible synthesis platforms and fundamental insights into thickness-driven functionality, opening new avenues for constructing high-performance electronic and energy devices.
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高影响因子
Advanced Science
·
2026
·
IF 14.1
Ruihua Li,Haiwei Wu,Hairu Wei,Wenhao Jia,Frederik Bettels,Leon Schenk,Zhihua Lin,Hanbin Liu,Guodong Liu,Zhijian Li,Lin Zhang
Lithium–sulfur (Li–S) batteries face low sulfur utilization and limited rate capability. Although electrolyte engineering is a key strategy for improving the conversion kinetics of lithium polysulfides (LiPS), achieving a balance between high energy density and high power density remains challenging. This study combines an ultra-low concentration electrolyte with a dual-functional hybrid organic selenium/organic tellurium additive (DPDSe/DPDTe). The system exhibits higher ionic conductivity and enhanced LiPS conversion kinetics. This is attributed to the high solubility of LiPS at low concentrations, which enhances the accessibility of active materials. By adjusting the mixing ratio of DPDSe/DPDTe, the formed DPDSe-Te exhibits unique solvation structure regulation and synergistic catalytic effects. This Li–S battery delivers an initial specific capacity of 1103 mAh g −1 (65.9% sulfur utilization) at 0.5 C and retains 89.3% of its capacity after 100 cycles. Even at 2 C, a capacity of 783 mAh g −1 is achieved. The pouch cell exhibits a high energy density of 340 Wh kg −1 at 0.5 C with stable cycling. This low-concentration, dual-functional additive strategy synergistically addresses LiPS solubility limitations and kinetic bottlenecks, offering an effective route toward Li–S batteries with both high energy density and high-power density.
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
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IF 9.8
Jinying Zhou,Wenjun Rao,Shuai Hu,Xin Li,Linghua Ouyang,Shuilan Zhu
Te -flavor Baijiu is renowned for its complex sensory profile, which evolves significantly during ageing, though the aroma-active compounds driving these changes remain underexplored. To systematically evaluate the effects of ageing duration on its flavor properties, this study conducted a comparative analysis of samples aged for 0, 3, 5 and 10 years. The results demonstrated that esters exerted predominant influence on flavor development during ageing. In the initial ageing periods, ester concentrations increased markedly, with ethyl hexanoate emerging as a pivotal compound due to its high concentration and substantial odor contribution. Notably, distinct differences in aroma and taste were observed across ageing periods, with fresh Baijiu (0Y) exhibiting higher sweetness. Multivariate statistical analysis revealed distinct aroma profiles across ageing periods and identified 13 key aroma compounds that form the unique flavor skeleton of Te -flavor Baijiu. This study elucidates the flavor evolution dynamics during the ageing process of Te -flavor Baijiu, providing fundamental insights for process refinement and quality control in Baijiu production.
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PubMed
高影响因子
Advanced Electronic Materials
·
2024
·Vol. 11
·期 2
·2400268
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IF 5.3
Zhiyuan Dai,Yu Yu,Haibiao Guan,Ruowen Wang,Tao Ye,Yonghao Bu,Jie Deng,Mengdie Shi,Rui Xin,Tianxin Li,Haibo Shu,Xiaoshuang Chen,Jing Zhou
Room-temperature blackbody-sensitive infrared photodetectors with ultra-broadband and ultrafast photoresponses are highly desired in numerous scientific and technical fields. However, it is challenging for an infrared photodetector to simultaneously possess all the aforementioned characteristics. In this study, a room-temperature Te/PtSe 2 heterostructure photodetector is established to address this challenge, utilizing the built-in field of the heterostructure, the crossing conduction and valence bands of PtSe 2 , the high mobilities of both materials, and a considerable photogain. The device is photoresponsive over the ultrabroad wavelength range (519 nm–10 µm). The peak responsivity and specific detectivity reach 196.8 A W −1 , and 4.3 × 10 9 cm Hz 1/2 W −1 , respectively, at the wavelength of 3.32 µm. The device also exhibits blackbody sensitivity, with a responsivity of 24.8 A W −1 , and a specific detectivity of 7.4 × 10 8 cm Hz 1/2 W −1 . The photoresponse is ultrafast, corresponding to a 3 dB bandwidth of 160 kHz. The study provides new possibilities for high-performance room-temperature infrared detection.
研究领域:
光电子学
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红外光子学
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纳米材料
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半导体器件
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异质结构物理
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DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2021
·
IF 4.076
Xiaoya Weng,Chensheng Lin,Guang Peng,Huixin Fan,Xin Zhao,Kaichuang Chen,Min Luo,Ning Ye
The first tellurium(II) thiourea sulfate semiorganic nonlinear optical (NLO) material, Te(CS(NH2)2)4SO4·2H2O, was successfully obtained using the slow evaporation technique. The structure of this metal-free crystal featured three types of NLO-active units, namely CS(NH2)2, (SO4)2–, and (TeS4)6–, which synergistically contributed to its moderate second harmonic generation response (2.4 × KDP@1064 nm) and large birefringence (0.210@546.1 nm). Remarkably, this is the first example in which the quadrangular (TeS4)6– groups significantly contributed to the SHG effect and birefringence, and the first principles calculations revealed its special mechanism of NLO activity. These findings highlighted the exploration of semiorganic NLO materials and provide new opportunities for the discovery of new NLO crystals.
研究领域:
晶体学
·
材料科学
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Guanglan Wang,Chengye Hua,Weixin Chen,Heliang Fan,Peizhong Feng,Yabo Zhu
The development of efficient and low-cost bifunctional catalysts for electrochemical water splitting is important for future sustainable hydrogen energy deployment. In this paper, a series of composition-controlled hybrid catalysts (Co 1.11 Te 2 /Te) were successfully constructed by introducing different proportions of Co source into the precursor solutions during the hydrothermal synthesis of Te nanosheets(Te NSs). The experimental results show that the content of Co 3+ active species in the hybrid materials can be adjusted by controlling the molar ratio of Co to Te, thereby significantly improving the electrocatalytic performance of the samples. Benefiting from the highest content of Co 3+ , the large specific surface area, and the great charge transfer ability, the Te-Co-3 electrode exhibited the best catalytic activity and durability among all samples. The hydrogen evolution reaction(HER) and oxygen evolution reaction(OER) overpotentials of the electrode were only 135 and 261 mV, respectively, to drive a current density of 10 mA cm −2 in an alkaline environment (1 M KOH). Furthermore, it required only a cell potential of 1.56 V to achieve overall water splitting at 10 mA cm −2 . This work should be useful for the design and preparation of non-noble metal bifunctional catalysts .
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jialiang Jiang,Jinju Zheng,Hui Fu,Hao Zhang,Deliu Ou,Qiaochu Chen,Kai Wang,Sheng Cao,Jialong Zhao,Zhentao Du,Weiyou Yang
Vacancy-ordered double perovskites (DPs) are promising candidates for modern white light-emitting-diodes (WLEDs) due to their low toxicity and unique optical properties. However, the grand challenge is that DPs synthesized at room temperature (RT) typically have a low photoluminescence quantum yield (PLQY), most of which reported below 51 %, making them impractical for applications. Here, we present a facile strategy for the mass production of Bi 3+ and Te 4+ co-doped Cs 2 HfCl 6 (CHC) DPs at RT, to realize single-component dual-band emission with a high color rendering index. It is witnessed that the rationally designed ligand [Hmim]Cl facilitates a strong chemical interaction between the ligand and DPs. This interaction allows [Hmim]Cl to coordinate with undercoordinated Hf 4+ ions and provide excess chloride ions to the surface of the DPs. Consequently, it effectively controls the crystallization of DPs, protects them against moisture, reduces surface defects, and increases the migration barrier of halogen ions. As a result, the DPs exhibit excellent overall performance with robust photostability and a superior PLQY of 96.4 %, which is ∼ 2 times the highest reported value for similar DPs synthesized at RT. Current work presents a potential pathway for the mass production of high-quality DPs under mild conditions, leading to the development of signal-component WLEDs.
研究领域:
材料科学
·
光电技术
·
纳米技术
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DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2021
·
IF 9.811
Zhongnan Guo,Fan Sun,Danilo Puggioni,Yubo Luo,Xiaotong Li,Xiuquan Zhou,Duck Young Chung,Erjian Cheng,Shiyan Li,James M. Rondinelli,Wenxia Yuan,Mercouri G. Kanatzidis
Metal cluster compounds have garnered renewed interest in the search for novel superconductors and topological semimetals owing to structural instabilities of metal-cluster geometries and broken symmetries. Here we synthesized needle-like crystals of the V-cluster-based quasi-one-dimensional (Q1D) materials AV3Q3Oδ (A = K, Rb, Cs, Q = Se, Te) which can also be viewed as being composed of parallel nanowires. We examine how changes in their average and local structure control their electronic properties. All compounds crystallize in the TlFe3Te3-type structure (P63/m space group) with infinite (V3Q3)− double-walled columnar chains separated by A+ cations. Our single-crystal and synchrotron powder diffraction studies indicate oxygen atoms partially occupy the center site of the V6 octahedral metal cluster cages in KV3Te3O0.33, RbV3Te3O0.32, and CsV3Te3O0.35, whereas KV3Se3 is structurally oxygen-free. Our synchrotron X-ray pair distribution function (PDF) analyses indicate that the oxygen-free V6 cluster octahedra in KV3Se3 are highly distorted perpendicular to the chain direction even at room temperature, reducing the symmetry of the average structure from hexagonal P63/m to monoclinic P21/m. Our theoretical calculation supports this P21/m distortion and suggests the structure further distorts to P21 or P21/c at lower temperatures. In contrast, the oxygen-centered V-cluster in KV3Te3O0.33 exhibits a V3-triangle-trimerization along the chain direction. This feature is discernible from the local PDF and is consistent with lattice dynamical calculations based on density functional theory. Resistivity measurements indicate that KV3Se3 exhibits metallic behavior, whereas a dramatic metal–semiconductor–metal transition emerges in KV3Te3O0.33, RbV3Te3O0.32, and CsV3Te3O0.35 because of oxygen disorder and changes in local structure captured from our electronic structure analyses of the Fermi surface. Our investigation of the AV3Q3Oδ family demonstrates the importance of understanding local changes in structure driven by electronic instabilities, which can guide the search for new quantum materials in other low-dimensional cluster-compound materials.
研究领域:
材料科学
·
凝聚态物理
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DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Pengyu Zhu,Zhilei Wang,Yingjun Fang,Wenchao Wu,Yang yang Wu,Limin Ruan,Jinling Zhao,Wei Zeng
A flexible Te/Ag planar heterojunction (TS) photothermoelectric (PTE) film was successfully fabricated using screen-printing technology for efficient energy conversion applications. The developed TS film exhibits excellent flexibility and a remarkably high Seebeck coefficient, making it particularly suitable for PTE power generation and non-contact sensing applications. The p-type Te semiconductor component demonstrates a high value of 355 μV/K. The TS film exhibits distinct power-dependent photovoltage generation characteristics. Under 808 nm laser irradiation, the output voltage increases progressively with incident power, reaching values of 16.3, 19.3, 21.6, and 22.5 mV at corresponding power levels of 19, 22, 25 and 27 mW, respectively. Notably, at 19 mW irradiation, the photoelectric-to-total voltage ratio peaks at 93.4%, with excellent stability maintained during prolonged laser exposure tests. The effective wind velocity detection range of the sensor is 0.29–1.80 m/s. The TS film's heat-source-free non-contact sensing capability enables human behavior detection and Morse code recognition by virtue of temperature fluctuations caused by wind velocity. These unique properties in both heat-source-free non-contact sensing and PTE power generation offer promising opportunities for advancing flexible electronics and wearable technologies.
研究领域:
材料科学
·
能量转换
·
柔性电子学
·
传感器与传感技术
·
可穿戴技术
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高影响因子
危险品化学品经营许可证（带存储）