CHINESE JOURNAL OF CHEMISTRY
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2021
·Vol. 39
·期 8
·2141-2146
·
IF 6
Chuqiao Hu,La Li,Guozhen Shen
Main observation and conclusion Ti 3 C 2 MXene serving as superior electrical conductors presents more specific performance such as transparency, conductivity than gold (Au), and even could form a heterostructure with active materials of the functional devices. Here, a Ti 3 C 2 MXene-Te microplate van der Waals heterostructure based transparent near-infrared photodetector (PD) is exploited. Compared with Au-Te PD, the on-off ratio of the Ti 3 C 2 -Te PD is improved by seven orders of magnitude and reaches 9.51 × 10 7 under 1064 nm laser illuminations. Benefiting from the utilization of flexible PET substrate and Ti 3 C 2 conductors in manufacturing PD devices, the Ti 3 C 2 -Te PD exhibits excellent flexibility with no noticeable response change after being bent for different states and times. Moreover, 63% transmittance of the fabricated PD devices over the 500—1000 nm wavelength range is obtained. All the above results demonstrate the tremendous potential in wearable optoelectronics.
研究领域:
材料科学
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光电子学
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纳米技术
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产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2019
·Vol. 103
·期 1
·432-443
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IF 3.094
Weirong Wang,Guanliang Yu,Ruibin Wang,Chun Jiang
Here, we select simple Er 3+ -doped tellurite glass as model system to systematically explore the up-conversion, down-shifting mechanisms with different excitations (980 and 447 nm), respectively. We observe for the first time, to the best of our knowledge that tunable photo-luminescence occurs from green to red and NIR region, rather than merely from the long-accepted green to red region. Direct evidence of selective energy transfer mechanism is expounded in detail, and its potential applications are demonstrated. In addition, we provide evidence that the cross-relaxation process between dopant ions can enhance photo-luminescence in Er 3+ doped tellurite glasses with high dopant concentrations, whereas the crucial reason for emission decrease is the energy loss long-distance energy migration. These fundamental insights into the photophysical processes in heavily doped photonic glasses will broaden the applications of rare-earth-doped materials ranging from optical communications to medical imaging.
研究领域:
光学材料
·
光物理
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DOI
高影响因子
Nanoscale Advances
·
2020
·Vol. 2
·期 3
·1333-1339
·
IF 0
Ye Zhang,Qi You,Weichun Huang,Lanping Hu,Jianfeng Ju,Yanqi Ge,Han Zhang
It is widely known that the excellent intrinsic electronic and optoelectronic advantages of bismuthene and tellurene make them attractive for applications in transistors and logic and optoelectronic devices. However, their poor optoelectronic performances, such as photocurrent density and photoresponsivity, under ambient conditions severely hinder their practical application. To satisfy the demand of high-performance optoelectronic devices and topological insulators, bismuth telluride nanoplates (Bi2Te3 NPs) with different sizes, successfully synthesized by a solvothermal approach have been, for the first time, employed to fabricate a working electrode for photoelectrochemical (PEC)-type photodetection. It is demonstrated that the as-prepared Bi2Te3 NP-based photodetectors exhibit remarkably improved photocurrent density, enhanced photoresponsivity, and faster response time and recovery time in the UV-Vis region, compared to bismuthene and tellurene-based photodetectors. Additionally, the PEC stability measurements show that Bi2Te3 NPs have a comparable long-term stability for on/off switching behaviour for the bismuthene and tellurene-based photodetectors. Therefore, it is anticipated that the present work can provide fundamental acknowledgement of the optoelectronic performance of a PEC-type Bi2Te3 NP-based photodetector, shedding light on new designs of high-performance topological insulator-based optoelectronic devices.
研究领域:
材料科学
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光学工程
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产品关联
DOI
PubMed
ACS Nano
·
2023
·
IF 17.1
Hongmin Liu,Pankun Wu,Ronghao Wang,Huanjiang Meng,Yaqi Zhang,Weizhai Bao,Jingfa Li
The combination of photo-driven self-powered supplies and energy storage systems is considered as a promising candidate to solve the global energy dilemma. The photo-absorber and the energy storage material are integrated into the photocathode to effectively achieve a high-energy and high-efficiency energy system. In this work, we report the customized Janus-jointed photocathode design (integrating with highly efficient halide perovskite and tellurium composite electrode) and introduce it into the aqueous zinc–tellurium battery. The well-matched energy level of the Janus-jointed photocathode ensures the conversion of the photoenergy into electrical energy by transferring the photoexcited charge between each. As expected, in the photo-assisted recharging model, the decreased 0.1 V charge voltage and the extra 362 mA h g–1 at 100 mA g–1 demonstrated the significant merits of saving energy for such a photo-rechargeable Zn–Te (PRZT) battery. When the current density is 1000 mA g–1, the specific capacity of the prepared photocathode is 83% higher than that under dark conditions. More importantly, the photogenerated charge by the perovskite under light illumination could also directly photocharge the battery with no external current, indicating the self-powering traits. The rational design in this work is believed to provide a sustainable mode for efficient charging of the aqueous PRZT battery.
研究领域:
材料科学
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能源工程
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化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2023
·
IF 19
Lile Dong,Wenjuan Li,Yu Luo,Chaoran Liu,Kai Li,Yu Chen,Guobin Hong
Materdicine-augmented sonodynamic therapy has emerged as an efficient noninvasive strategy for cancer treatment by generating reactive oxygen species associated with the cavitation effect and sonosensitizers. However, semiconductor-based inorganic nanosonosensitizers have undesirable nondegradability, which can cause unsatisfactory therapeutic efficacy and potential toxicity. With the aim of overcoming this obstacle, in this study, Mo-assisted Te (MT) nanosonosensitizers with high oxidative degradation abilities are engineered for photoacoustic imaging (PA)-guided sonodynamic tumor nanotherapy. Intriguingly, the engineered MT nanosonosensitizers can generate abundant singlet oxygen under ultrasound irradiation to eradicate tumor cells, thereby demonstrating its ability to achieve high tumor growth inhibition rates. In particular, MT nanosonosensitizers exhibit oxidative degradation properties that guarantee desirable biocompatibility and potentiate clinical translation. Therefore, this study validates a paradigm for theory-oriented design of sonodynamic tumor nanotherapy.
研究领域:
纳米医学
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肿瘤学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
·
IF 10.588
Zhangdi Li,Mei Gou,Xuejie Yue,Qiong Tian,Dongya Yang,Fengxian Qiu,Tao Zhang
Fabrication of simple and efficient adsorbents is greatly vital to satisfy the requirements of removal of tellurium in wastewater treatment , yet remains challenging. Here, a facile and cost-effective strategy to develop ZIF-L coated self-crosslinking cellulose membrane (ZIF-L/SC membrane) for tellurium adsorption was presented. In-situ vertical growth of ZIF-L nanoplates with functional properties on membrane substrate is an available strategy, effectively remedying deficiency of pure nanosized sorbent in agglomeration problem and unhandy recovery. The SC membrane formed by strong hydrogen bonding among cellulose fibers is an excellent substrate, due to the favorable mechanical strength and abundant hydroxyl groups. The as-prepared ZIF-L/SC membrane shows advantageous morphology of large contact surface, fine thermal stability and eligible mechanical strength. The adsorption performance and possible mechanism of ZIF-L/SC membrane for Te (IV) were investigated by diverse characterization methods, showing admirable adsorption effect. Furthermore, the ZIF-L/SC membrane has excellent antibacterial properties, thus it is expected to deal with membrane fouling caused by microorganism breeding. Therefore, the bifunctional ZIF-L/SC membrane with excellent antibacterial activity is anticipated to be a promising candidate for efficient tellurium adsorbents, and simultaneously have potential in various fields in the future.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2025
·Vol. 131
·期 6
·1-11
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IF 2.8
Wang Qun,Bu Ranran,Xu Changyuan,Zhao Fengjiao,Yin Hongming
Tellurite glass samples doped with Er 3+ and Eu 3+ were synthesized by the high-temperature solid phase method. The XRD diffraction pattern shows the amorphous properties of the prepared samples. The luminescence properties of glass samples were analyzed using the absorption spectrum, excitation spectrum, and emission spectrum. The energy transfer mechanism between Er 3+ ions and Eu 3+ ions was studied by changing the concentration of Eu 3+ ions, and the results were verified by measuring the luminescence decay lifetime. It is worth noting that at 380 nm excitation, Er 3+ and Eu 3+ co-doped tellurite glass exhibits remarkable tunable luminescence characteristics: by adjusting the concentration of Eu 3+ ions, the emission color can be flexibly adjusted from green to orangish-red. In addition, by effectively combining the prepared co-doped glass sample with the 380 nm GaN chip, the cold white light emission with CIE coordinates of (0.324, 0.320) was successfully achieved. According to the variable-temperature spectroscopy, at 210℃, the emission peak intensities of the co-doped Er 3+ /Eu 3+ tellurite glass at 547 nm and 613 nm are above 70% of the room-temperature luminescence intensity, demonstrating excellent thermal stability. Graphical
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yajie Guo,Fuxian Zheng,Ting Wang,Xinyang Liu,Xiaotan Tian,Konggang Qu,Lei Wang,Rui Li,Wenjun Kang,Zongge Li,Haibo Li
Palladium (Pd)-transition metal alloys have the potential to regulate the intermediate surface adsorption strength in oxygen reduction reactions (ORR), making them a promising substitute for platinum-based catalysts. Nonetheless, prolonged electrochemical cycling can lead to the depletion of transition metals, resulting in structural degradation and poor durability. Herein, the synthesis of alloy catalysts (Pd25%Te75%) containing Pd and the metalloid tellurium (Te) through a one-step reduction method is reported. Characterizations of powder X-ray photoelectron spectroscopy, X-ray diffraction, and high-resolution transmission electron microscopy demonstrated both uniform dispersion and strong binding force of elements within the PdTe alloy, along with providing crystallographic details of associated compounds. Based on density functional theory calculations, PdTe had a more negative d-band center than that of pure Pd, which reduces the adsorption capacity between active sites and intermediates in the ORR, and therefore enhances reaction kinetics. The Pd25%Te75% exhibited excellent ORR activity, and its onset and half-wave potentials were ∼0.98 and ∼0.90 V, respectively, at 1600 rpm within the O2-saturated 1.0 M KOH. Significantly, accelerated durability tests achieved exceptional stability, and half-wave potential just decayed by 4 mV after 30000 consecutive cycles. Moreover, this study aims to promote the preparation of Pd and metalloid alloys for other energy conversion applications.
研究领域:
材料科学
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电化学
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催化科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2016
·Vol. 18
·期 12
·1-9
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IF 2.101
Song Haijun,Cai Kefeng,Shen Shirley
Firstly, tellurium (Te) nanorods with a high Seebeck coefficient have been integrated into a conducting polymer PEDOT/PSS to form PEDOT/PSS/Te composite films. The Seebeck coefficient of the PEDOT/PSS/Te (90 wt.%) composite films is ~191 μV/K, which is about 13 times greater than that of pristine PEDOT/PSS. Then, H 2 SO 4 treatment has been used to further tune the thermoelectric properties of the composite films by adjusting the doping level and increasing the carrier concentration. After the acid treatment, the electrical conductivity of the composite films has increased from 0.22 to 1613 S/cm due to the removal of insulating PSS and the structural rearrangement of PEDOT. An optimized power factor of 42.1 μW/mK 2 has been obtained at room temperature for a PEDOT/PSS/Te (80 wt.%) sample, which is about ten times larger than that of the untreated PEDOT/PSS/Te composite film.
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
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yang Xiang,Kun Xiong,Linjian Yu,Haidong Zhang,Jia Chen,Meirong Xia
It is of great significance to develop low cost, high-efficiency and environment-friendly electrocatalysts for hydrogen evolution reaction (HER) from water splitting. Herein, nickel telluride nanosheets grown on Ni Foam (NF) with three different crystal phases (NiTe, Ni 2.6 Te 2 and Ni 2.86 Te 2 ) are fabricated by one-step hydrothermal tellurization followed annealing process. The non-stoichiometric Ni 2.86 Te 2 /NF exhibits superior electrocatalytic HER performance compared to the NiTe/NF and Ni 2.6 Te 2 /NF, which is comparable to the state-of-the-art 20 wt% Pt/C catalyst at high current density. The Ni 2.86 Te 2 /NF only requires an overpotential of 348 mV to drive the current density of 200 mA cm −2 in a 1.0 M KOH electrolyte. Similarly, The Ni 2.86 Te 2 /NF delivered current densities of 200 mA cm −2 at the overpotential of 279 mV in 0.5 M H 2 SO 4 . Such excellent performance could be ascribed to the fast electron transfer and positive shift of d d-band center from its rich defective effect of crystal phase transition, as well as to the exposure of active sites provided by the two-dimensional nanosheets with large specific surface area. This work provides valuable insights for the rational modulation of the crystal phase on the nickel telluride for catalyzing HER.
研究领域:
材料科学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2022
·Vol. 15
·期 15
·5331
·
IF 3.748
Min Sun,Pengyu Zhang,Qingmin Li,Guowu Tang,Ting Zhang,Dongdan Chen,Qi Qian
N-type bismuth telluride (Bi2Te3) based thermoelectric (TE) fibers were fabricated by thermal drawing and Bridgman annealing, and the influence of Bridgman annealing on the TE properties of n-type Bi2Te3-based TE fibers was studied. The Bridgman annealing enhanced the electrical conductivity and Seebeck coefficient because of increasing crystalline orientation and decreasing detrimental elemental enrichment. The TE performance of n-type Bi2Te3-based TE fibers was improved significantly by enhancing the power factor. Hence the power factor increased from 0.14 to 0.93 mW/mK2, and the figure-of-merit value is from 0.11 to 0.43 at ~300 K, respectively.Keywords:n-type Bi2Te3;thermoelectric fibers;thermal drawing;Bridgman annealing
研究领域:
材料科学
·
热电学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2018
·
IF 11.698
Hongxia Wang,Yanwei Wang,Lixing Tan,Ling Fang,Xiaohui Yang,Zhengyong Huang,Jian Li,Huijuan Zhang,Yu Wang
Rational structure design and component-controlled synthesis are attractive and challenging methods to develop materials with unique function for renewable energy conversion such as hydrogen production via water splitting. The earth-abundant and affordable transition metals have been regarded as ideal alternatives to precious platinum. Herein, we report the designed synthesis of component-modified cobalt telluride nanoparticles encapsulated in the nitrogen-doped carbon frameworks with the feature of high surface area and great electron conductivity. Compared with CoTe 2 /C and CoTe/C, the Co 1.11 Te 2 /C presents the highest catalytic activity for HER in 1M KOH due to its structural and component advantages. After a continuous reaction for 20 h or cycling for 1000 cycles, Co 1.11 Te 2 /C shows only a little performance loss. This work provides an effective approach to synthesize low-cost and efficient electrocatalysts for HER via rational structural and component design.
研究领域:
材料科学
·
可再生能源
·
电化学
✓ 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）