ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Maoqiang Chi,Guangdi Nie,Yanzhou Jiang,Zezhou Yang,Zhen Zhang,Ce Wang,Xiaofeng Lu
Here, we report a simple one-step procedure to fabricate coaxial Te@poly(3,4-ethylenedioxythiophene) (PEDOT) nanocables via a self-assembly redox polymerization between 3,4-ethylenedioxythiophene monomer and the oxidant of sodium tellurite without the assistance of any templates and surfactants. The as-synthesized Te@PEDOT coaxial nanocables have diameters of center cores in the range of 5–10 nm, and the size of the outer shell from several nanometers to 15 nm. More interestingly, the as-prepared Te@PEDOT nanocables can be converted to Pd@PEDOT nanocables via a galvanic replacement reaction. The center core of the Pd nanowire exhibits a high crystallinity. The application of the synthesized Pd@PEDOT nanocables as peroxidase-like catalysts for the colorimetric detection of H2O2 is reported. The synergistic effect between the Pd nanowire and electrically conducting PEDOT enhances the catalytic activity toward the oxidation of the peroxidase substrate 3,3′,5,5′-tetramethylbenzidine in the presence of H2O2. A detection limit toward H2O2 is as low as 4.83 μM, and a linear range from 10 to 100 μM has been achieved. This work offers a potential versatile route for the fabrication of cable-like nanocomposites with conducting polymers and other active components, which display great promise in applications such as catalysis, nanoelectronic devices, and energy storage and conversion.
研究领域:
材料科学
·
生物催化
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Siqi Wang,Zhi Yang,Yuejun Sun,Yu Xiao,Li-Dong Zhao
PbTe-based thermoelectric materials are considered to be a medium-temperature thermoelectric candidates and the high-performance n -type PbTe is urgently to be developed to match its p -type counterpart on account of practical application. Herein, we firstly optimized the carrier density of n -type PbTe through Sb doping, and obtained a maximum ZT value of ∼1.0. Then, based on the optimized carrier density, we introduced ternary compounds AgSb(Se, Te) 2 to suppress the lattice thermal conductivity . Minimum lattice thermal conductivity of n -type PbTe was reduced as low as ∼0.53 W m −1 K −1 and ∼0.62 Wm −1 K −1 through introducing AgSbSe 2 and AgSbTe 2 , respectively. Combining the maintained electrical properties with suppressed thermal conductivity , maximum ZT values ∼1.2 and ∼1.3 were obtained in PbTe+2%AgSbSe 2 and PbTe+2%AgSbTe 2 , respectively. This work provides an effective strategy of synergistically balancing charge and phonon transports in n -type PbTe with ternary AgSb(Se, Te) 2 compounds.
研究领域:
材料科学
·
热电转换
·
凝聚态物理
·
半导体物理
·
功能材料
·
能量转换材料
✓ 已验证
DOI
高影响因子
Nano Research
·
2020
·Vol. 14
·期 5
·1551-1558
·
IF 8.183
Zeng Ruosheng,Bai Kun,Wei Qilin,Chang Tong,Yan Jun,Ke Bao,Huang Jialuo,Wang Liushun,Zhou Weichang,Cao Sheng,Zhao Jialong,Zou Bingsuo
Perovskite variants have attracted wide interest because of the lead-free nature and strong self-trapped exciton (STE) emission. Divalent Sn(II) in CsSnX 3 perovskites is easily oxidized to tetravalent Sn(IV), and the resulted Cs 2 SnCl 6 vacancy-ordered perovskite variant exhibits poor photoluminescence property although it has a direct band gap. Controllable doping is an effective strategy to regulate the optical properties of Cs 2 SnX 6 . Herein, combining the first principles calculation and spectral analysis, we attempted to understand the luminescence mechanism of Te 4+ -doped Cs 2 SnCl 6 lead-free perovskite variants. The chemical potential and defect formation energy are calculated to confirm theoretically the feasible substitutability of tetravalent Te 4+ ions in Cs 2 SnCl 6 lattices for the Sn-site. Through analysis of the absorption, emission/excitation, and time-resolved photoluminescence (PL) spectroscopy, the intense green-yellow emission in Te 4+ :Cs 2 SnCl 6 was considered to originate from the triplet Te(IV) ion 3 P 1 → 1 S 0 STE recombination. Temperature-dependent PL spectra demonstrated the strong electron-phonon coupling that inducing an evident lattice distortion to produce STEs. We further calculated the electronic band structure and molecular orbital levels to reveal the underlying photophysical process. These results will shed light on the doping modulated luminescence properties in stable lead-free Cs 2 MX 6 vacancy-ordered perovskite variants and be helpful to understand the optical properties and physical processes of doped perovskite variants.
研究领域:
材料科学
·
光电学
·
固体物理学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Chaojun Yang,Xiangdan Tian,Guangguang Huang,Xinyang Xiong,Kaiwei Sun,Bo Zhang,Shujie Wang,Zuliang Du
Cesium zirconium halide (e.g., Cs2ZrCl6:Te or CZCT) perovskites have garnered significant interest due to their unique optical properties. However, there have been no reports of CZCT perovskite nanoparticles (PNPs) that simultaneously offer high efficiency and thermal stability. Here, a comprehensive defect suppression strategy is reported to achieve CZCT PNPs with these attributes. First, the inner defects of CZCT perovskite microcrystals (PMCs) are minimized by controlling crystallization kinetics precisely. Second, the PNPs are obtained from PMCs via top-down fabrication, and the surface defects of PNPs are passivated via the hydroxyl groups of alkyl-terminated silica-oligomer shell (ASO). The resulting CZCT@ASO PNPs show the highest photoluminescence quantum yield (PLQY) of 96% and high thermal stability among the reported conventional CZCT emitters. Finally, white light-emitting diodes (WLEDs) are integrated by using CZCT@ASO PNPs as the down-color converters, achieving a color coordinate of (0.31, 0.33) and a color rendering index of 86. These results demonstrate that core/shell CZCT@ASO PNPs have great potential as phosphors for lighting applications.
研究领域:
材料科学
·
光电
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2018
·
IF 2.687
Ying Lei,Wensheng Gao,Yu Li,Rundong Wan,Wen Chen,Rui Zheng,Leiqiang Ma,Hongwei Zhou
In the present wok, a series of Ti-filled and Te-doped skutterudite compounds Ti x Co 4 Sb 11.5 Te 0.5 (x = 0.2, 0.3, 0.5) were successful fabricated by combination of microwave synthesis and spark plasma sintering technique. The microstructure and thermoelectric properties of Ti x Co 4 Sb 11.5 Te 0.5 bulks have been investigated systematically. The experimental results show that nearly single phase skutterudite were obtained by 5 min microwave synthesis. The Ti 0.3 Co 4 Sb 11.5 Te 0.5 bulk has smallest and uniform grain size of about 2 μm. The influences of Ti concentration on thermoelectric properties were discussed. A highest ZT of 0.60 for Ti 0.3 Co 4 Sb 11.5 Te 0.5 was achieved at 773 K along with a total thermal conductivity of 3.72 W m −1 K −1 , one might obtain higher values at a higher temperature.
研究领域:
材料科学
·
热电材料
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materiomics
·
2025
·
IF 9.6
Jiang-Hu Yu,Yu Wang,Chong-Yu Wang,Hao Liang,Yi-Lin Liu,Ze-Yuan Yang,Yi-Xin Zhang,Jing Feng,Zhen-Hua Ge
The extensive utilization of thermoelectric (TE) conversion technology necessitates stricter performance requirements for bismuth telluride (Bi 2 Te 3 )-based commercial materials. Despite the numerous optimization methods available for Bi 2 Te 3 -based materials, each optimization method has a certain upper limitation, and combining multiple strategies can achieve the optimal thermoelectric figure of merit ( zT ). In this study, the thermoelectric properties of (Bi,Sb) 2 Te 3 materials are enhanced through the combined use of the heavy element Pb to regulate carrier concentration and the In element to optimize the band structure. Notably, indium (In) can suppress p-type antisite defects, which generate abundant Te vacancies, and help regulate the carrier concentration to its optimal level. This co-doping strategy achieves optimal carrier concentration, thereby enhancing the power factor (PF=4.57×10 3 μW⸱m –1 ⸱K –2 ), and generating abundant dislocations, the presence of the rich nano-second phase Sb 2 O 3 contributes to reduced lattice thermal conductivity. Consequently, a peak zT value of 1.41 at 323 K and a high average zT value of 1.23 between 300 K and 500 K are achieved. Additionally, two pairs of thermoelectric modules, composed of p-type (Bi 0.42 Sb 1.58 ) 0.994 (In, Pb) 0.006 Te 3 and zone-melted n-type Bi 2 Te 2.7 Se 0.3 , demonstrate a conversion efficiency of 7.3% at a temperature difference of 250 K. This underscores the promising potential of these thermoelectric modules in commercialization. Thus, this study demonstrates the feasibility of combining multiple strategies and is expected to provide a potential reference for other thermoelectric systems.
✓ 已验证
产品关联
DOI
高影响因子
Discover Oncology
·
2024
·Vol. 15
·期 1
·1-12
·
IF 2.8
Liu Yueli,Li Fan,Wang Qiongyu,Zhang Yunfei,Tian Shuhong,Li Biao
Anlotinib is effective in treatment of many kinds of malignant cancer, but its antineoplastic effects on esophageal cancer remains unclear. This study aims to investigate its impact on esophageal cancer and the underlying mechanisms. Anlotiniband 5-fluorouracil + cisplatin (5-FU + DDP) was administered separately to human esophageal cancer TE- 1 cells tumor xenograft mouse models every 3 days. Tumor size and body weight were measured before each treatment and at the end of the experiment. In vitro studies were conducted using TE- 1 cells to examine the effects of Anlotinib. Cell viability, migration, proliferation, apoptosis, cell cycle, their regulatory proteins and the transcriptomic changes were analyzed. Anlotinib reduced tumor size, tumor weight, and the ratio of tumor weight to body weight in vivo. It decreased the viability of TE- 1 cells, with a 50% growth-inhibitory concentration of 9.454 μM for 24 h, induced apoptosis, and arrested TE- 1 cell cycle in the S phase. It inhibited migration and proliferation while negatively regulating the PI3K/Akt signaling pathway. Enhanced expressions of P21, Bax, and lowered expressions of cyclin A1, cyclin B1, CDK1, PI3K, Akt, p-Akt, and Bcl-2 were observed after Anlotinib treatment. Anlotinib exhibits antineoplastic activity against human esophageal cancer TE- 1 cells by negatively regulating the PI3K/Akt signaling pathway, consequently altering the expressions of proteins related to proliferation, apoptosis, and the cell cycle.
研究领域:
肿瘤学
·
药理学
·
细胞生物学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Zhuang-Hao Zheng,Ning Chen,Zi-Long Zhang,Jun-Ze Zhang,Dong Yang,Mohammad Nisar,Mazhar Hussain Danish,Fu Li,Shuo Chen,Jing-Ting Luo,Guang-Xing Liang,Yue-Xing Chen
Flexible thermoelectric (TE) generators have received great attention as a sustainable and reliable option to convert heat from the human body and other ambient sources into electricity. This study provides a synthesis route that involves thermally induced diffusion to introduce Te and Se into Bi, fabricating an n-type Bi–Te–Se flexible thin film on a flexible substrate. This specific synthesis alters the crystal orientation (00l) of the thin film, improving in-plane electrical transportation and optimizing carrier concentration. Consequently, BixTeySe0.42 enhanced both the Seebeck coefficient and electrical conductivity, achieving a power factor of 17.1 μW cm–1 K–2 at room temperature. The TE device assembled with p-type Sb2Te3 exhibited exceptional flexibility with only a 26.2% change in resistance after 1000 times of bending at a radius of about 6 mm. The resistance change was further reduced to 7.5% after the application of a vinyl laurate coating. The fabricated TE device generated an ultrahigh output power of 792 nW with a temperature difference of 30 K.
研究领域:
材料科学
·
热电学
·
柔性电子
✓ 已验证
DOI
高影响因子
Nanoscale
·
2025
·Vol. 17
·期 39
·23129-23138
·
IF 5.1
Mengya Li,Xinhui Yang,Chang Lu,Meili Long,Zhihui Chen,Haitao Chen,Xiaoming Yuan,Jun He
Anisotropic van der Waals (vdW) heterostructures are crucial for smart optoelectronic device development. Although transition metal dichalcogenides (TMDCs) like WS2 hold great potential for high-performance optoelectronic devices, their C3 rotational symmetry restricts polarization-sensitive applications. Crystal symmetry breaking of TMDCs by forming heterostructures is a powerful approach for achieving anisotropic optoelectronic properties. Considering the promising potential of the WS2/Te p–n heterostructure in broad photoresponse and enhanced nonlinearity, we successfully fabricated this heterostructure and investigated its anisotropic optical properties. The formation of the heterostructure induces interfacial symmetry breaking, and the interface shows twofold symmetry as confirmed by polarization-dependent second-harmonic generation (SHG) measurements. Moreover, the WS2/Te heterostructure exhibits enhanced SHG signals across the 850–1064 nm wavelength range. The interlayer anisotropic moiré potential induced by symmetry breaking leads to anisotropic Raman scattering and exciton emission with degrees of polarization (DOP) of 0.268 and 0.310. Furthermore, the heterostructure formation reduces intervalley scattering, enhancing valley polarization in WS2. In particular, the valley polarization degree of the trion in the heterostructure is 0.495 at 93 K. These results demonstrate the potential of the WS2/Te heterostructure for strong nonlinear optical responses and anisotropic optoelectronic properties, establishing a foundation for their broad application in next-generation photonic devices.
研究领域:
光电子学
·
纳米光子学
·
材料科学
·
非线性光学
·
凝聚态物理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of the American Chemical Society
·
2026
·
IF 16.6
Junwu Sang,Borui Liu,Shanshan Jiang,Suzhe Liang,Tingting Liu,Kaiyong Tuo,Hongrui Huang,Luting Xie,Yuran Yu,Guosheng Shao,Xueliang Sun,Changhong Wang
Tellurium (Te), with high volumetric capacity (2621 mAh cm–3) and decent electronic conductivity (2000 mS cm–1), has emerged as a promising cathode material for future lithium metal batteries. However, all-solid-state batteries (ASSBs) with Li–Te chemistry remain largely unexplored. Here, we construct a nanostructured Te91@LPSC-350 composite in which ∼10 nm Te domains are uniformly embedded within an amorphous Li5.5PS4.5Cl1.5 (LPSC) matrix, featuring an ultrahigh Te content of 91 wt % and intimate solid–solid contact. This nanocomposite exhibits high electronic conductivity (121 mS cm–1) and appreciable ionic conductivity (0.1 mS cm–1, after lithiation), enabling ultrafast and highly reversible Te redox reactions in the solid-state. Resultantly, ASSBs with the Te91@LPSC-350 nanocomposite cathode deliver their theoretical capacity of 420 mAh g–1 at 0.25 mA cm–2, maintain ultralong cycling stability over 13,000 cycles at 12.5 mA cm–2, and achieve a high areal capacity of 21 mAh cm–2. Furthermore, all-solid-state Li–Te pouch cells with an energy density of 1100 Wh L–1 (based on Li and Te91@LPSC-350) retain 81% of their initial capacity after 200 cycles under 2.5 MPa. Notably, Te can be directly recovered by exploiting its 100% selectivity in a vaporization–condensation process. These results demonstrate that all-solid-state Li–Te batteries are a safe, energy-dense, and sustainable energy storage technology.
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2018
·
IF 0
Handong Jiao,Donghua Tian,Shijie Li,Chaopeng Fu,Shuqiang Jiao
Rechargeable aluminum based batteries attract particular attention due to their high anode capacity, safety, and cost advantage. Recently, high discharge voltage, ultrahigh rate performance, and long cycle life of aluminum ion batteries have been reported. However, the capacity of these Al-based batteries is limited, and it is of great value to explore novel cathodes with high reversible capacity that can rival a rechargeable lithium ion battery. In this work, we present the redox process of a tellurium electrode in a Lewis acidic AlCl3/[EMIm]Cl room temperature ionic liquid and disclose, for the first time, that the tellurium not only can be reduced to Te2– but also can be oxidized to TeCl3+, and the whole process is reversible. Subsequently, we successfully construct a rechargeable Al–Te battery with an initial reversible capacity of ∼913 mAh/g, which is close to the theoretical capacity of tellurium of ∼1260.27 mAh/g and an obvious discharge voltage plateau at ∼1.5 V, already approaching that of a Li–Te battery (1.7 V). Significantly, this work brings a new way to reconsider the reaction mechanism and the theoretical capacities of chalcogen and its compounds as the cathode of the aluminum based batteries in room temperature chloroaluminate melts. For instance, the theoretical capacity of the sulfur is an unprecedented 5015.09 mAh/g when it undergoes a similar reversible redox process from S2– to SCl3+.
研究领域:
电化学
·
能源材料
·
无机化学
·
储能技术
✓ 已验证
DOI
JOURNAL OF NANOPARTICLE RESEARCH
·
2019
·Vol. 21
·期 6
·1-10
·
IF 2.009
Wang Wenfang,Liu Jing,Li Xia,Jiang Qinglin,Xu Jingkun,Luo Chan,Liu Peipei,Tan Rongri,Du Yukou,Jiang Fengxing
One-dimensional silver telluride nanowires (NWs) as potential thermoelectric materials have been studied extensively. At present, most of the efforts are focused on p-type silver telluride, while limited works have been achieved on the preparation of n-type silver telluride. Herein, we prepared n-type Te/Ag 2 Te NWs by galvanic exchange reaction and fabricated a nanofilm. As a simple and cost-effective method, galvanic exchange reaction was employed to prepare n-type Te/Ag 2 Te NWs with obtained Seebeck coefficient of − 93.98 μV K −1 . The nanostructure and chemical composition as well as structural phase transition of as-prepared n-type Te/Ag 2 Te NWs were characterized and discussed. Besides, the thermoelectric thin film device consisting of n-type Te/Ag 2 Te nanofilms and p-type Ag-doped Te nanofilms obtained by one-step hydrothermal method was assembled and exhibited accessible output voltage as 65 mV at the 75 K temperature difference, which may provide the fundament for the development of inorganic thermoelectric nanofilm device.
研究领域:
材料科学
·
热电学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）