JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yue Yu,Dan Cao,Lingang Yang,Haibiao Guan,Zehao Liu,Changlong Liu,Xiaoshuang Chen,Haibo Shu
Two-dimensional (2D) layered group-IV monochalcogenides with large surface-to-volume ratio and high surface activity make that their structural and optoelectronic properties are sensitive to air oxidation. Here, we report the utilization of oxidation-induced gradient doping to modulate electronic structures and optoelectronic properties of 2D group-IV monochalcogenides by using SnS nanoplates grown by physical vapor deposition as a model system. By a precise control of oxidation time and temperature, the structural transition from SnS to SnSO x could be driven by the layer-by-layer oxygen doping and intercalation. The resulting SnSO x with a graded narrowing bandgap exhibits the enhanced optical absorption and photocurrent, leading to the fabricated SnSO x photodetector with remarkable photoresponsivity and fast response speed (<64 μs) at a broadband spectrum range of 520–1550 nm. The peak responsivity (7294 A/W) and detectivity (9.54 × 10 9 Jones) of SnSO x device are at least two orders of magnitude larger than those of SnS photodetector. Moreover, its photodetection performance can be competed with state-of-the-art of 2D materials-based photodetectors. This work suggests that the air oxidation could be utilized as an efficient strategy to engineer the electronic and optical properties of SnS and other 2D group-IV monochalcogenides for the development of high-performance broadband photodetectors.
研究领域:
材料科学
·
光电技术
·
纳米科技
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jingwen Tang,Wei Zheng,Hanning Zhang,Peigen Zhang,Jianxiang Ding,Congyuan Zeng,Wei Zhang,Nosipho Moloto,ZhengMing Sun
Tin-based anode materials, while notable for their high volumetric capacity, often experience rapid capacity decay during cycling due to volume expansion, pulverization, and agglomeration. Herein, we synthesized a nanoscale composite through a thermo-mechanochemical process utilizing the mechanical anisotropy of Ti 2 SnC MAX phase. This composite incorporates in-situ generated nano-Sn particles within a Ti 2 SnC matrix characterized by Sn vacancies. The strategic integration of uniformly nano-Sn particles and the refined granularity of the Ti 2 SnC matrix markedly enhance the electrochemical properties of the anode. Impressively, it maintains a volumetric capacity of 1430 mAh cm −3 after 400 cycles, equivalent to approximately 3370 h, at a current density of 0.1 A g −1 . Post-cycling analysis reveals the transformation of Sn into a nanocrystalline state and the gradual exposure of more Sn active sites within the Ti 2 SnC matrix, significantly enhancing lithium-ion storage performance. This study highlights the crucial role of the A-site atomic layer in MAX phases and, considering the compositional diversity of MAX phases, offers new insights and broad applicability in lithium-ion battery technologies.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Di Qian,Yahong Jin,Yanmei Li,Haoyi Wu,Yihua Hu
The continually advancing near-infrared (NIR) phosphor-converted light-emitting diode (pc-LED) hold pivotal significance in optical imaging and NIR spectroscopy. Cr 3+ -doped garnet broadband NIR phosphors have attracted considerable attention owing to their high optical performance enabled by the rigid structure. Nonetheless, the emission wavelength is severely restricted, and longer wavelength emissions usually result in inferior quantum efficiency and poor luminescence stability. In this work, the concurrent reconstruction of dodecahedral and octahedral sites by introducing [Na + -Sn 4+ ] unit in the framework of Na 2 CaSn 2 Ge 3 O 12 garnet contributes to the Cr 3+ broadband NIR emission spanning 700–1200 nm, with a peak at 820 nm. Utilizing a charge compensation strategy via Ta 5+ codoping largely boosts the internal quantum efficiency (IQE) of Na 2 CaSn 2 Ge 3 O 12 :Cr 3+ from 93.06 % up to 95.04 %. Trap-mediated energy compensation is proposed to achieve a record-breaking zero-thermal-quenching behavior (99.39 %@423 K) of Cr 3+ -doped garnet with such a longer wavelength emission. The encapsulated prototype broadband NIR pc–LED gives rise to an overwhelming NIR output power of 590.9 mW@1300 mA and a photoconversion efficiency (PCE) of 32.62 % at 30 mA, rendering exceptional performance in night vision, detection, and NIR imaging applications.
研究领域:
光学材料
·
发光材料
·
光电子学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
·
2014
·
IF 3.679
Lipeng Zhou,Lin Wu,Hongji Li,Xiaomei Yang,Yunlai Su,Tiangliang Lu,Jie Xu
A facile and efficient method to improve the selectivity of methyl lactate (MLA) in the chemical conversion of glucose in methanol catalyzed by homogeneous Lewis acid was established. The yield of MLA was efficiently improved through controlling the acidity of the reaction solution by neutralization of protons generated from the hydrolysis/methanolysis of SnCl 4 . The mechanism of glucose conversion to MLA catalyzed by SnCl 4 -NaOH was explored. The effects of the concentration of catalyst and substrate and the reaction temperature and time were systematically studied. The catalyst system of SnCl 4 -NaOH can efficiently convert glucose, fructose, and sucrose to MLA with yields of 47%, 57%, and 51% at 160 °C for 2.5 h, respectively. The catalyst can be regenerated and reused at least three times in the conversion of glucose to MLA without significant loss of activity and selectivity.
研究领域:
化学工程
·
催化化学
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2024
·
IF 3.2
Yu Su,Qian Zhou,Ting Hu,Peng Li,Yu Zhu,Qing-Wen Han,Ru-An Chi,Dong-Sheng Li
Tin-oxo clusters, as molecular model compounds of tin oxide materials, have attracted increasing attention. Although various tin-oxo clusters have been obtained, the systemic studies on ligand functionalization of tin-oxo clusters remain to be well developed. In this study, we adopted 3-aminopyrazine-2-carboxylic acid (HAPZC) as the functionalized ligand, and successfully synthesized a novel tin-oxo cluster [( n -BuSn) 12 (OH) 6 O 14 (APZC) 2 ]·2H 2 O ( CTGU-SnC-3 ). Due to the functionalization of the APZC ligands, the structure and charge of Sn 12 cage in CTGU-SnC-3 are all different from those of reported cationic football cage. This Sn 12 cage in CTGU-SnC-3 presents the interesting low-symmetrical football framework with the functionalized ligands. Different from the reported cationic football cages, the CTGU-SnC-3 is charge-neutral structure without any counteranions. Moreover, the CTGU-SnC-3 exhibits hydrophobic behavior and catalytic activity in electrocatalytic CO 2 reduction reaction.
研究领域:
材料化学
·
分子簇化学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Ximeng Dong,Wenlin Cui,Wei-Di Liu,Shuqi Zheng,Lei Gao,Luo Yue,Yue Wu,Boyi Wang,Zipei Zhang,Liqiang Chen,Zhi-Gang Chen
As an eco-friendly thermoelectric material, SnTe has attracted extensive attention. In this study, we use a stepwise strategy to enhance the thermoelectric performance of SnTe. Firstly, AgCl is doped into SnTe to realize band convergence and enlarge the band gap of AgCl-doped SnTe. AgCl-doping also induces dense point defects , strengthens the phonon scattering, and reduces the lattice thermal conductivity . Secondly, Sb is alloyed into AgCl-doped SnTe to further optimize the carrier concentration and simultaneously reduce the lattice thermal conductivity , leading to improved thermoelectric dimensionless figure of merit, ZT . Finally, (Sn 0.81 Sb 0.19 Te) 0.93 (AgCl) 0.07 has approached the ZT value as high as ∼0.87 at 773 K, which is 272 % higher than that of pristine SnTe. This study indicates that stepwise AgCl-doping and Sb-alloying can significantly improve thermoelectric performance of SnTe due to synergistic band engineering, carrier concentration optimization and defect engineering.
研究领域:
材料科学
·
热电学
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2020
·
IF 2.779
Jianqing Lin,Xing Ju,Chao Xu,Yu Yang,Xiaoze Du
Spectral beam splitting technology based on optical nanofluids (NFs) is a promising field of solar energy research. However, the challenges to optimize the optical properties and enhance the high temperature stability of NFs are always exist. In this study, Indium Tin Oxide (ITO) nanoparticles were selected as the research object because of the excellent optical properties. The Oleylamine-capped ITO nanoparticles were prepared by chemical reduction. A novel NF based on Therminol 66 was successfully prepared. The high temperature stability and optical properties of obtained Oil-based NFs were analyzed by the gravitational sedimentation method and spectrophotometry . Moreover, we experimentally studied the effect of single reaction condition on the morphology and Sn-doping of particles. The results indicated that, at the reaction condition of 320 °C, 5.5 h, and the In/Sn mole ratio of 90:10, the obtained nanoparticles had high monodispersity and crystallinity , and the resulting NF had good stability and dispersion. Furthermore, when tuning single reaction condition, the morphology and Sn doping of nanoparticles tended to be a regular change. However, the change of single reaction condition was not enough to obtain the ITO NFs with good stability and dispersion. The ITO NFs obtained in present study had high thermal stability, and showed different high-temperature characteristics in the Ultraviolet and visible (UV–Vis) and near infrared (NIR) regions.
研究领域:
材料科学
·
太阳能技术
·
纳米科技
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2024
·Vol. 12
·期 18
·11020-11027
·
IF 10.7
Wenhao Zheng,Xiao Peng,Wenjing Zhai,Lin Huang,Peizhuo Chen,Penghui Shi,Xiaohui Zhou,Jianguo Wan,Zhibo Yan,J.-M. Liu
Tin-based halide perovskites have become the prospective photoelectric materials due to their remarkable optoelectronic properties and relatively low toxicity. However, the rapid crystallization and easy oxidation of Sn2+ to Sn4+ made it challenging to fabricate efficient photoelectric devices. Herein, benzylamine boron trifluoride (BBF) was introduced into the FASnI3 precursor solution to tune the crystal quality and photoelectric properties of FASnI3 films. It was demonstrated that the BBF passivates the film defects, reduces the content of Sn4+, enhances the PL intensity and stability, and improves the responsivity at wavelengths from 415 to 980 nm. The treatment of BBF with an optimal concentration of 1.5 mg mL−1 improves the responsivity of the device from 0.89 to 2.6 A W−1. The coordination of BBF with the anions/cations in the perovskite precursor is suggested to account for the improvement of crystal quality and the photoelectric properties of FASnI3 films.
研究领域:
材料科学
·
光电子学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 132
·期 38
·
IF 1.768
Yongqin Fang,Di Wang,Xin Jing,Bosong Xue
Fluorinated organic–inorganic hybrid coatings with interpenetrating network for corrosion protection of tinplate were prepared by hydrolysis and condensation reaction of tetraethoxysilane and 3-methacryloxypropyltrimethoxysilane, followed by radical polymerization of trimethylolpropane triacrylate dodecafluoroheptyl methacrylate. The highly crosslinked organic network was developed and attached to the inorganic moieties through covalent Si–C bonds. The hybrid coatings were characterized by scanning electron microscope, water contact angle, Fourier transformed infrared spectroscopy, and thermogravimetric analysis. Their anticorrosion performances were evaluated by potentiodynamic polarization, electrochemical impedance spectroscopy and salt spray test. The results indicated that the fluorinated hybrid coatings exhibited excellent anticorrosion ability by forming a hydrophobic physical barrier between tinplate substrate and its external environment. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42428.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Min Chen,Can Wang,Yingcai Wang,Xiaoyang Meng,Zefang Chen,Weiqiu Zhang,George Tan
In this study, a novel Ti-enhanced nanotube arrays/SnO 2 -Sb electrode was prepared by the sol-gel method on enhanced TiO 2 nanotube arrays (ENTA). The characterization, degradation performance, oxidation mechanism and mass transfer impact of the novel electrode was investigated. Compared with the conventional Ti/SnO 2 -Sb electrode, our novel electrode has higher oxygen evolution potential and electrochemical stability, due to the fabrication of ENTA structure. Its application for the destruction of a common biocide of MIT (2-methyl-4-isothiazolin-3-one), the first-order rate constants were determined from 0.01 min −1 to 0.505 min −1 during the electrochemical process. The radical oxidation and non-radical oxidation of the MIT degradation contribution were quantitatively identified as 87.8% and 12.1%, respectively. Furthermore, the second-rate constant between hydroxyl radical and MIT was estimated at 3.72 × 10 9 M − 1 S − 1 . The mass transfer impact was investigated with a differential column batch reactor (DCBR) under the conditions of various electrode spacing and fluid velocities. It indicated that reducing the electrode spacing and increasing the fluid velocity would enhance the mass transfer process and increase the overall oxidation rate. Meanwhile, the EE/O decreased from 17.7 kWh m −3 to 9.7 kWh m −3 , and the mass transfer coefficients increased dramatically from 0.52 × 10 −6 m s −1 to 2.48 × 10 −6 m s −1 .
研究领域:
环境科学
·
电化学工程
✓ 已验证
DOI
高影响因子
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
·
2021
·Vol. 36
·期 12
·125022
·
IF 2.352
Yuchang Liu,Hongjie Liu,Anjie Hu,Yingmei Wei,Wenchao Ou,Xianwang Deng,Shaopeng Wang,Kefu Yu
The quest to develop inexpensive chemical sensing materials that are energy-efficient, portable, and with efficient performance lies at the center of next-generation sensor development. Owing to their low cost, easy preparation, high response, and smooth integration with electronic circuits, metal oxide semiconductors have received particular attention. Yet, metal oxide semiconductor based sensors often suffer from high power consumption due to their high operating temperature, which hinders them from practical applications. To solve this problem, herein, we proposed ultrathin sub-4 nm SnO2 films synthesized by a facile tunable hydrothermal method. Benefiting immensely from its two-dimensional anisotropic nature, the proposed SnO2 ultra-thin film exhibits a large specific area of 94.41 m2 g−1 and possesses surface oxygen vacancies. The obtained sample was practically applied as a gas sensor; the results indicate that the ultra-thin SnO2 film based sensor exhibits the highest sensitivity to triethylamine (19.2 at 100 ppm), outstanding repeatability, and excellent sensing selectivity at a low working temperature of 150 °C.
研究领域:
材料科学
·
化学传感器
✓ 已验证
DOI
高影响因子
ACS Omega
·
2021
·
IF 3.512
Xianyu Liu,Tayyaba Najam,Ghulam Yasin,Mohan Kumar,Miao Wang
Herein, we successfully synthesized two novel metal thiophosphites (MTPs) hybridized with carbon, that is, NiPS3/C and SnPS3/C composites, via an environment-friendly and cost-effective approach without harsh reaction conditions. Subsequently, the electrochemical performances of NiPS3/C and SnPS3/C composites have been investigated in coin-cells, and it is revealed that MTPs/C have a significantly higher Li-storage capacity and better stability compared to the MTPs without carbon. Moreover, the SnPS3/C electrode shows a lower internal resistance and a better rate performance compared to NiPS3/C. We employed extensive ex situ experiments to characterize the materials and interpreted the remarkably improved performance of MTPs/C.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）