CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Boxiao Li,Jun Li,Dongkai Ni,Songsong Tang,Juncheng Fan,Kaiyuan Shi,Zhen Li,Jian Zhou
Compared with the deposition of thin films on a solid substrate, using a liquid substrate provides an atomic level roughness and extra degree of freedom in manipulating the system conditions such as interfacial tension, which can be preferred for the fabrication of high-performance films. Herein, we develop a liquid-substrate-based spontaneous spreading (LSBS) technology that applies miscible liquids of high surface tension as the substrate and spreads the polymer solution under capillary forces for thin-film processing. We demonstrate the LSBS technology using a conductive polymer, poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) (PEDOT/PSS), and the spread thin films were then transferred to various untreated substrates. LSBS technology uses a miscible liquid substrate for the first time and mediates the spreading, solvent removal, and ion exchange process between the liquid substrate and PEDOT/PSS, increasing the crystallinity of the PEDOT/PSS, thereby significantly improving its electrical conductivity. The LSBS mechanism is investigated through the time–space relationship between spreading and solvent removal, from which we confirm the operating window. Our LSBS technology exhibits a spontaneous, scalable, and versatile process for forming polymer thin films with thicknesses from nano to micron scales on liquid substrates, providing an easy route to control the geometry and presenting universally applicable to different materials.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2015
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IF 6.723
Chong Liu,Jiandong Fan,Xing Zhang,Yanjiao Shen,Lin Yang,Yaohua Mai
Recently, the organic–inorganic hybrid perovskite solar cells exhibit rapidly rising efficiencies, while anomalous hysteresis in perovskite solar cells remains unsolvable. Herein, a high-quality perovskite thin film is prepared by a modified vapor-assisted solution process, which is a simple but well-controllable method proven to be capable of producing a thin film with full surface coverage and grain size up to micrometers. The as-fabricated perovskite solar cell has efficiency as high as 10.2%. The hysteresis effects of both planar and mesoscopic TiO2-based perovskite solar cells have been comprehensively studied upon illumination. The results demonstrate that mesoporous-based perovskite cells combined with remarkable grain size are subject to alleviating the hysteresis effects in comparison to the planar cells. Likewise, mesoscopic TiO2-based perovskite cells perform independently of illumination and bias conditions prior to the measurements, whereas the planar cells display a reversible behavior of illumination and applied bias-dependent I–V curves. The present study would refer strip road for the stability study of the perovskite solar cells.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
AICHE JOURNAL
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2018
·Vol. 65
·期 2
·712-722
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IF 3.326
Jiamin Hou,Xilu Hong,Sheng Zhou,Yanying Wei,Haihui Wang
Industrial applications of membranes based on metal–organic frameworks (MOFs) are challenged by their complex fabrication procedures and poor processability, despite their huge potential for efficient gas separation. Especially, the consumption of a large amount of toxic, expensive solvent, and harsh operation by conventional solvothermal growth also make it less attractive for industrial production. Herein, a solvent-free method is proposed to fabricate continuous defect-free MOF membranes on commercial porous stainless steel substrates, where the metal precursors are electrodeposited on the support followed by a heat treatment with the ligand powder via solid-state reaction without using any solvent. This strategy is proven to be applicable for various MOF membranes and it is expected to be a facile, cheap, and environmental friendly way for future large-scale production. © 2018 American Institute of Chemical Engineers AIChE J , 65: 712–722, 2019
研究领域:
材料科学
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化学工程
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DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Zihui Liang,Yang Shi,Tian Yuan,Bowen Jin,Yidong Ming,Fengxiang Chen,Shimin Wang,Jing Li,Congcong Wu
The synthetical strategy of methylamine (MA) molecular treatment for fabricating perovskite film has been attracting increasing attention because of the ease of fabrication feature and the high-throughput process. In this approach, we found both of perovskite salts (MAI and PbI2) and crystals have been used as the source materials for the interaction with MA molecules. Even though both alternatives are applicable, the reaction routes toward perovskite crystalline film are distinct, which correlates with the photovoltaic performance and the fabrication process design. Therefore, we systematically studied the difference between perovskite salts and crystals with respect to precursor solubility, crystallization dynamics, perovskite crystal structure, and photoelectric properties. The results show the configuration and the crystallization dynamic of the salts and crystal-derived solution are different. The salt-derived solution consists of iodoplumbate complexes, while the crystal-derived solution is composed of perovskite sheet intermediates. Because of the ordered stacking behavior of the perovskite sheet intermediates, the crystal-derived perovskite films showed faster crystallization and preferred crystal orientation, which results in superior charge carrier transport properties and higher conversion efficiency. The disclosure of the distinct features between salts and crystals provides guidelines to modulate the solution chemistry for higher photovoltaic performance.
研究领域:
材料科学
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光伏技术
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化学工程
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DOI
高影响因子
Materials Today
·
2021
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IF 31.041
Wenhuai Feng,Jin-Feng Liao,Xueqing Chang,Jun-Xing Zhong,Meifang Yang,Tian Tian,Ying Tan,Liang Zhao,Chengxi Zhang,Bing-Xin Lei,Lianzhou Wang,Jinsong Huang,Wu-Qiang Wu
High-efficiency perovskite solar cells (PSCs) normally rely on costly, high purity (>99.99%), air-sensitive raw materials that vary batch-to-batch. The perovskite films and devices derived from conventional raw materials mixture method suffer from inferior reproducibility of optoelectronic properties and performance, as well as discounted promise towards low-cost scalable manufacturing. Distinguished from the direct mixing of raw materials, the preparation of perovskite films with precursors made by the redissolution of perovskite crystals holds the promise to make PSCs more affordable, reproducible, efficient and stable. The resultant perovskite films inherit the exceptional characteristics of the parent perovskite crystals, such as high crystallinity, high purity, accurate stoichiometric ratio, and low trap-state density, as well as good ambient and phase stability. Herein, we summarize recent progress on the employment of the perovskite crystals redissolution strategy for achieving low-cost, efficient perovskite-based solar-to-electricity conversion, which will help both popularize the redissolution strategy and reveal unprecedented advantages gained by its adoption.
研究领域:
材料科学
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能源技术
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光电转换
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DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
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2015
·Vol. 641
·期 5
·792-796
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IF 1.16
Zhongshang Dou,Jianfeng Cai,Yuanjing Cui,Jiancan Yu,Tifeng Xia,Yu Yang,Guodong Qian
Continuous and intergrown metal-organic framework (MOF) membranes, MIL-100(In) (MIL represents Materials Institute Lavoisier), were prepared directly on porous anodic alumina oxide (AAO) membranes using an in situ crystallization method. The pore surface of MIL-100(In) is conferred with polarity due to the presence of the 1, 3,5-benzenetricarboxylic acid. The thickness of MIL-100(In) membranes was tuned by varying the reactant concentration of indium chloride and 1, 3,5-benzenetricarboxylic acid. Single gas permeation measurements on this MOF membrane indicate the large permeances of 0.90 × 10 –6 and 0.81 × 10 –6 mol · m –2 ·s –1 ·Pa –1 for CO 2 and CH 4 , and relatively high ideal selective factors of 3.75 and 3.38 for CO 2 /N 2 and CH 4 /N 2 , respectively.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
Laser & Photonics Reviews
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2024
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IF 9.8
Jingfei Ni,Qian Cao,Kang Xiao,Kun Gang,Shujuan Liu,Xiangmei Liu,Qiang Zhao
Copper(I) halide cluster-based coordination compounds have attracted significant attention in the development of novel scintillators due to their mild synthesis methods, high luminescence efficiency, tunable emission wavelength, high-Z element incorporation, and large structural diversity. However, a major obstacle for these crystalline materials with covalent/coordination network structures is their insolubility, which poses significant challenges for the low-cost and large-scale production of scintillation films. In this study, copper(I) iodide and benzotriazole derivative ligands with diverse cationic substituents are employed to fabricate all-in-one (AIO) colloidal copper(I) iodide cluster-based scintillator suspensions. These suspensions, characterized by distinctive ionic and coordination bonds, are synthesized via confined growth in the presence of polyvinylpyrrolidone (PVP). Furthermore, they demonstrate exceptional compatibility with polymer matrices, facilitating the production of uniform and flexible scintillation films with highly efficient radioluminescence through blade coating. The resulting films achieved an excellent spatial resolution of 17 lp mm −1 . This surfactant-assisted fabrication method for colloidal scintillators, combined with microelectronic printing for film preparation, demonstrates significant potential for developing flexible scintillation films for high-resolution X-ray imaging.
研究领域:
材料科学
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医学影像
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化学
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DOI
高影响因子
LANGMUIR
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2025
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IF 3.9
Xintao Deng,Yingpeng Zhao,Fuyuan Yang,Yangyang Li,Minggao Ouyang
The finger-like pore (FP) is one of the most important phenomena in the fabrication of membranes via nonsolvent induced phase separation (NIPS), as the performance of most functional membrane is heavily dependent on the appropriate regulation of the FPs. However, the mechanisms governing the initiation and growth of FPs are still not fully understood, and their regulation often relies on empirical knowledge and practice. This study presents the development of a hydrodynamics-coupled phase-field model that reproduces the process of FP initiation and parallel growth from the dense skin layer. The evolution process of the finger morphology and the impact of various manufacturing parameters are investigated. Optical observations are conducted and compared with simulated morphologies under different parameter conditions, revealing that the simulations mirrored the effects of these parameters, as seen in actual processes.
研究领域:
材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
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2018
·Vol. 30
·期 21
·1707166
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IF 21.95
Xu Zhang,Rahim Munir,Zhuo Xu,Yucheng Liu,Hsinhan Tsai,Wanyi Nie,Jianbo Li,Tianqi Niu,Detlef-M. Smilgies,Mercouri G. Kanatzidis,Aditya D. Mohite,Kui Zhao,Aram Amassian,Shengzhong (Frank) Liu
Ruddlesden–Popper reduced-dimensional hybrid perovskite (RDP) semiconductors have attracted significant attention recently due to their promising stability and excellent optoelectronic properties. Here, the RDP crystallization mechanism in real time from liquid precursors to the solid film is investigated, and how the phase transition kinetics influences phase purity, quantum well orientation, and photovoltaic performance is revealed. An important template-induced nucleation and growth of the desired (BA) 2 (MA) 3 Pb 4 I 13 phase, which is achieved only via direct crystallization without formation of intermediate phases, is observed. As such, the thermodynamically preferred perpendicular crystal orientation and high phase purity are obtained. At low temperature, the formation of intermediate phases, including PbI 2 crystals and solvate complexes, slows down intercalation of ions and increases nucleation barrier, leading to formation of multiple RDP phases and orientation randomness. These insights enable to obtain high quality (BA) 2 (MA) 3 Pb 4 I 13 films with preferentially perpendicular quantum well orientation, high phase purity, smooth film surface, and improved optoelectronic properties. The resulting devices exhibit high power conversion efficiency of 12.17%. This work should help guide the perovskite community to better control Ruddlesden–Popper perovskite structure and further improve optoelectronic and solar cell devices.
研究领域:
材料科学
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光伏技术
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半导体物理
✓ 已验证
DOI
高影响因子
DESALINATION
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2016
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IF 4.412
Bo Feng,Kai Xu,Aisheng Huang
In the present work, we reported the preparation of graphene oxide framework (GOF) membrane through vacuum filtration of GOF suspension for seawater desalination . Firstly, 1, 4-phenylene diisocyanate (PDI) was selected as cross-linking for covalent modification of GO nanosheets to prepare three-dimensional GOF. Secondly, micron-thickness GOF membrane was prepared on the PDI-modified α-Al 2 O 3 tube through vacuum filtration of GOF suspension. The developed GOF membrane was evaluated for seawater desalination by pervaporation . Attributing to a three-dimensional structure, the resistance of the mass transferring through GOF membrane can be reduced, thus the water flux of the GOF membranes can be increased significantly. For an 18 μm thickness of GOF membrane at 90 °C, the water flux is 11.4 kg·m − 2 ·h − 1 and ion rejection is over 99.9% for desalination of 3.5 wt.% seawater. Further, the GOF membrane also displays high stability for seawater desalination. This high separation performance combined with high stability and facile fabrication road of the GOF membrane suggests that the developed GOF membrane is a promising candidate for desalination of seawater and brackish water.
研究领域:
材料科学
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环境工程
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Zhiming Zhang,Hao Yang,Chenliang Cao,Yue Liu,Shuwei Liang,Meidi Wang,Hongjian Wang,Xingzhong Cao,Fusheng Pan,Hong Wu,Zhongyi Jiang
Covalent organic frameworks (COFs) with well-ordered pore structures and versatile functionalities hold tremendous promise as membrane building blocks. The facile and controllable fabrication of COF membranes remains a critical challenge. Herein, we presented a one-step vapor-liquid interfacial polymerization (VLIP) method to in-situ fabricate COF membranes on substrates under mild conditions. This VLIP method features controllable COF growth at the vapor-liquid interface, acquiring COF membranes with tunable physicochemical structure. The time-dependent amorphous-to-crystalline COF growth improved the crystallinity of COF membranes, thus improving the molecular sieving property. The increased monomer concentration endowed COF membranes with higher hydrophilicity, intensifying the water sorption ability. The resultant COF membranes conferred numerous hydrophilic pathways for water-selective transport, exhibited a high and stable n -butanol dehydration performance with permeation flux of 8160 g m −2 h −1 and separation factor of 1023 over 14 days. This VLIP method may evolve into a generic platform technique to fabricate COF membranes for efficient molecular separation.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2024
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IF 3.9
Zhang Ting,Chen Yaoyang,Yang Bin,Wang Xiaohong,Zheng Zhengzhi,Wu Jinpu,Lu Tianyu,Sang Jiaojiao,Kang Shijun,Hu Weiqiang,Zhang Weiguo,Ke Yuchao
In the realm of battery separator membranes, polyethylene microporous membranes hold significant promise due to their high density, robust mechanical properties, and eco-friendliness. Thermally-induced phase separation (TIPS) stands out as a crucial technique for fabricating polyolefin microporous membranes. Existing research has predominantly focused on leveraging TIPS technology to enhance the electrochemical performance of such membranes, overlooking a comprehensive grasp of the film formation process within TIPS. This study delves into the detailed TIPS film formation process of a high-density polyethylene (HDPE)/dioctyl phthalate (DOP) film-forming system. Based on experimental findings, there existed a discernible relationship among the blade coating thickness (δ s ), HDPE mass fraction (ω H ), and final film thickness (δ f ). When δ s is determined, δ f exhibits an initial increase followed by a subsequent decrease as ω H increases. Infrared thermal imaging (ITI) technology was employed to in-situ track the location of phase interface in the HDPE/DOP system, revealing that heightened film scraping thickness and increased HDPE content jointly led to a gradual deceleration in the system’s cooling rate. The utilization of a four-parameter model (FPM) to fit the cooling curves of the HDPE/DOP melt blend under 20 °C quenching in air conditions displayed an exceptional degree of conformity (with all regression coefficients exceeding 0.99). Parameter D in FPM was influenced not only by the polymer property but also by ω H and δ f , and our findings revealed that with ω H set at 30% and δ s at 200 μm, parameter D approached a value of 4. The present work advances the current comprehension of the formation process of HDPE TIPS films and furnishes pivotal insights for optimizing the thermodynamics and process variables essential for solidification of HDPE TIPS films in practical applications.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
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