SURFACE AND INTERFACE ANALYSIS
·
2012
·Vol. 45
·期 3
·698-704
·
IF 1.18
Junfei Ou,Weihua Hu,Ying Wang,Fajun Wang,Mingshan Xue,Wen Li
A novel bilayer superhydrophobic film was constructed on Cu substrate by a simple multi-step process. First, (3-mercaptopropyl) trimethoxysilane (MPTMS) molecules were self-assembled onto the pre-etched Cu surface via covalent bonding followed by hydrolysis and condensation, then 1H, 1H, 2H, 2H-perfluorodecyltrichlorosilane (PFDTS) were grafted onto the resultant hydroxyl terminated surface via the Si-O-Si bonding. The so-prepared sample was defined as Cu-MPTMS-PFDTS. The structure and morphology of the samples were characterized by means of contact angle measurement, X-ray photoelectron spectroscopy and scanning electron microscopy. The corrosion behaviors of the films were evaluated by Tafel plot and electrochemical impedance spectroscopy on an electrochemical work station. The results indicated that the bilayer superhydrophobic film possessed better corrosion protection as compared with the control samples. The superiority of the corrosion protection was mainly ascribed to the following two aspects: the superhydrophobicity and polysiloxane micro-structures of the Cu-MPTMS-PFDTS. Copyright © 2012 John Wiley & Sons, Ltd.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Xinlei Gan,Jing Zhang,Yanjun Xing,Xuefeng Peng,Yinxia Han,Qiuxiang Wang,Jiaxing Xiong,Xiaohui Liu,Like Huang,Weiping Li,Qidong Tai,Yuejin Zhu
Air-processed perovskite solar cells (PSCs) with high photoelectric conversion efficiency (PCE) can not only further reduce the production cost but also promote its industrialization. During the preparation of the PSCs in ambient air, the contact of the buried interface not only affects the crystallization of the perovskite film but also affects the interface carrier transport, which is directly related to the performance of the device. Here, we optimize the buried interface by introducing 3-mercaptopropyltrimethoxysilane (MPTMS, (CH3O)3Si(CH2)3SH) on the nickel oxide (NiOx) surface. The crystallization of the perovskite film is improved by enhancing surface hydrophobicity; besides, the SH-based functional group of MPTMS passivates the uncoordinated lead at the interface, which effectively reduces the defects at the bottom interface of perovskite and inhibits the nonradiative recombination at the interface. Moreover, the energy level between the NiOx layer and the perovskite layer is better matched. Based on multiple functions of MPTMS modification, the open circuit voltage of the device is obviously improved, and efficient air-processed methylamine-free (MA-free) PSCs are realized with PCE reaching 21.0%. The device still maintains the initial PCE of 85% after 1000 h aging in the glovebox. This work highlights interface modification in air-processed MA-free PSCs to promote the industrialization of PSCs.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Wei Wu,Nana Liu,Xiaohui Sun,Xueying Zhao,Quan Yuan,Xuyang Zhang,Bo Wang,Li'e Mo,Xiangwei Wang,Xianhui Rong,Guohua Wu
Polymer dispersed liquid crystals (PDLC) could function as an energy-efficient smart window, enabling the reversible transition between transparent and opaque states when applied bias voltages. However, the requirement for high switching voltages presents a challenge, resulting in severe energy consumption that contradicts objectives for sustainable energy conservation and emission reduction. Herein, this study synthesizes barium titanate/methyltrimethoxysilane/silver (BTO/MPTMS/Ag) composites successfully and incorporates it into the PDLC, designing for the low-energy-consumption smart window. Barium titanate nanowires (BTO NWs) enhance the dielectric constant of the PDLC film, while Ag nanoparticles (Ag NPs) exploit localized surface plasmon resonance (LSPR) to amplify the local electric field. Consequently, this synergistic effect of BTO NWs and Ag NPs reduces the threshold voltage and the saturation voltage to 10 V and 19 V, corresponding to decreases of 60 % and 62 %, respectively. Significantly, experiential results confirm that the incorporation of BTO/MPTMS/Ag nanoparticles does not affect the electro-optical nature of the PDLC film adversely. The work provides a promising approach for the preparation of advanced optical devices and energy-efficient equipment.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
Nanoscale
·
2025
·Vol. 17
·期 22
·13880-13887
·
IF 5.1
Cheng Luo,Rui Zhou,Yihao Li,Min Li,Xiaoyan Wen,Ming-Yu Li,Shuo Deng,Sisi Liu,Hongyun Gao,Haifei Lu
Metal nanoparticles hold promising applications in photoacoustic transducers due to their unique plasmonic properties. However, current transducers using conventional noble metal nanoparticles exhibit relatively low photoacoustic conversion efficiency, primarily due to insufficient optical absorption for effective thermal or acoustic energy conversion. This paper proposes the use of nanoparticles derived from the liquid metal gallium-indium eutectic alloy (EGaIn), which demonstrate significantly higher absorption at 1064 nm compared to gold or silver nanoparticles, thereby enhancing photoacoustic conversion efficiency. To stabilize the liquid metal nanoparticles (LMNPs) in a polydimethylsiloxane (PDMS) matrix, 3-mercaptopropyltriethoxysilane (MPTMS) is employed as a surfactant during sonication in a solvent. Furthermore, embedding EGaIn nanoparticles in a cluster form enhances absorption through gap-induced plasmonic effects. Through optimization, a photoacoustic conversion efficiency of 5.1 × 10−3 is achieved, which is 1–2 orders of magnitude higher than those of transducers using conventional metal materials. This study highlights the potential of liquid metal nanoparticles with plasmonic effects in advancing the development of novel photoacoustic composite materials.
研究领域:
生物医学工程
·
纳米医学
·
光声成像
·
分子影像学
·
材料科学
·
生物传感器
·
转化医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Shuhan Hui,Yandong Han,Wensheng Yang
This study delves into the impact of the hydrolysis/condensation of 3-mercaptopropyltrimethoxysilane (MPTMS) on the modification of thiol groups on the surface of silica particles. By employing an optimized Stöber method, such as the pH, water content, and quantity of MPTMS in the reaction system, a systematic exploration of the size, shape, and size/shape distribution of the thiol-modified silica particles was carried out. During these investigations, Ellman’s colorimetric method and Raman spectroscopy were utilized to quantitatively analyze the changes in the amount of thiol modification on the surface of silica particles. Furthermore, the synthesized SH-SiO2 particles were employed as adsorption carriers for Au3+ ions, which were then reduced to form SH-SiO2/Au composite particles. Significantly, these prepared SH-SiO2/Au composite particles exhibited remarkable catalytic activity in the reduction reaction of p-nitroaniline.
研究领域:
材料科学
·
纳米技术
·
表面化学
·
无机化学
·
催化作用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 18
·15061-15067
·
IF 3.201
Jing Ma,Bing Yan
We prepared multi-component luminescent hybrid films based on a silicon chip by a covalent functionalization strategy of both metal–organic frameworks (ZIF-90) and lanthanide complexes. Herein the Si chip is firstly covalently modified by aminopropyltriethoxysilane (APTES) via a hydrolysis and condensation reaction, and then ZIF-90 is covalently grafted onto the surface of Si chip through imine condensation with APTES to form the hybrid films (Si-APTES-ZIF-90). Ternary lanthanide complexes with 3-methacryloxypropyltrimethoxysilane (MPTMS) and Phen (1,10-phenanthroline) are introduced to the above film systems through MPTMS as a covalent linker. The final multi-component hybrid films (Phen-Ln-MPTMS-Si-APTES-ZIF-90) display the typical Ln3+ (Ln = Eu, Tb, Sm and Dy) luminescence through the energy transfer from the MPTMS-Si-APTES-ZIF-90 host. Moreover, fine tuning of the luminescence color for these films is discussed by adjusting the excitation wavelength. Phen-Ln-MPTMS-Si-APTES-ZIF-90 (Ln = Eu, Sm, Dy) can exhibit white color emission closely by selective excitation. In addition, the consolidation stability under airflow of the film and the luminescence stability of the film under certain humidity environments are discussed.
研究领域:
材料科学
·
化学
·
光学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）