CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Mide Luo,Yali Zhao,Yanying Wei,Haihui Wang
Construction of large-area two-dimensional (2D) nanosheet membranes for gas separation, particularly tubular membranes, is extremely challenging. Here, electrophoretic deposition technology was employed to construct large-area tubular 2D MXene membranes for H 2 /CO 2 gas separation, where the membrane with a single tube area of 25 cm 2 could be successfully manufactured in approximately 5 min under optimal process conditions. The membrane exhibited good H 2 /CO 2 separation performance with H 2 /CO 2 selectivity of 53.0 and hydrogen permeance of 133.8 GPU, exceeding the 2008 Robeson upper bound, and showed excellent stability in long-term test with water vapor evaluations for more than 350 h. Additionally, some engineering issues and operation parameters concerning the separation performance of H 2 /CO 2 in single-module and dual-module separators have been thoroughly investigated and analyzed. This work has taken an important step toward the industrialization of 2D MXene membranes and also provided significant guidance to other 2D material-based membranes in approaching practical applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Micromachines
·
2017
·Vol. 8
·期 7
·218
·
IF 1.833
Shuting Xie,Jun Wu,Biao Tang,Guofu Zhou,Mingliang Jin,Lingling Shui
One of the key fabrication steps of large-area microfluidic devices is the flexible-to-hard sheet alignment and pre-bonding. In this work, the vacuum airbag laminator (VAL) which is commonly used for liquid crystal display (LCD) production has been applied for large-area microfluidic device fabrication. A straightforward, efficient, and low-cost method has been achieved for 400 × 500 mm2microfluidic device fabrication. VAL provides the advantages of precise alignment and lamination without bubbles. Thermal treatment has been applied to achieve strong PDMS–glass and PDMS–PDMS bonding with maximum breakup pressure of 739 kPa, which is comparable to interference-assisted thermal bonding method. The fabricated 152 × 152 mm2microfluidic chip has been successfully applied for droplet generation and splitting.Keywords:large-area;microfluidic devices;fabrication;vacuum airbag laminator
研究领域:
生物工程
·
微纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Shuzhen Yu,Xu Cao,Wenbin Niu,Suli Wu,Wei Ma,Shufen Zhang
Compared with traditional paper, water rewritable photonic crystal (PC) paper is an environmentally friendly and low resource-consuming material for information storage. Although, recently reported PC papers have high-quality structure color showing promising prospect, the paper size, that is within several centimeters, still limits turning it from potential to reality. Here, we present a new water rewritable PC film as large as the A4 size (210 × 300 mm2) with a high-quality structure color. The material is prepared by thermal assisted self-assembly on the air–liquid interface. To fix such a large-area self-assembled PC film, we partially deform and coalesce the self-assembled nanoparticles, which have low glass transition temperature. This process causes the film to be transparent and structural colorless but still keeps the inner 3D-ordered structure. Then, utilizing the hydrophilic nature of the assembled block, the film can be switched to a structural color state by touching water. Diverse brilliant structural colors appear with different assembled particle (poly(butyl methacrylate-co-methylmethacrylate-co-butyl acrylate-co-diacetone acrylamide) named as PBMBD) sizes. The transparency–structural color transition can be performed multiple times reversibly in all or specific regions of the film. It provides a new solution for future applications of rewriteable PC paper.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2021
·
IF 15.881
Zhiyu Liu,Zhong Ma,Baitai Qian,Anson Y. H. Chan,Xiaowen Wang,Yang Liu,John H. Xin
With their ultrafast water transport and excellent molecule sieving properties, graphene oxide (GO)-based membranes show great potential in the membrane filtration field for water purification and molecular separation. However, the inability of uniform GO membranes to be produced on an industrial scale and their nonenvironmentally friendly reduction treatment are the bottleneck preventing their industrial applications. Herein, we report a scalable ultrathin uniform GO membrane fabrication technique. Ultrathin GO membranes with a large area of 30 × 80 cm2 and a thickness of a few nanometers were uniformly and facilely fabricated using a continuous process combining Mayer rod-coating and a short-time, high-power UV reduction. The interlayer spacing of the GO membrane could be effectively reduced and regulated to improve the salt rejection rate. The fabricated membrane showed superior water permeability of over 60.0 kg m–2 h–1 and a high separation efficiency of over 96.0% for a sodium sulfate (Na2SO4) solution. It also exhibited excellent mechanical stability under various harsh crossflow conditions. More importantly, the fabrication method developed here can be scaled up using a roll-to-roll industrial production process, which successfully solves the problem currently faced by GO membrane researchers and makes the industrial usage of GO membrane a reality.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2023
·Vol. 35
·期 48
·2307013
·
IF 29.4
Caijiao Yu,Xixi Cen,Zhengqing Zhang,Yuxiu Sun,Wenjuan Xue,Zhihua Qiao,Michael D. Guiver,Chongli Zhong
Ultrathin membranes with ultrahigh permeance and good gas selectivity have the potential to greatly decrease separation process costs, but it requires the practical preparation of large area membranes for implementation. Metal–organic frameworks (MOFs) are very attractive for membrane gas separation applications. However, to date, the largest MOF membrane area reported in the literature is only about 100 cm 2 . In the present study, a new step-nucleation in situ self-repair strategy is proposed that enables the preparation of large-area (2400 cm 2 ) ultrathin and rollable MOF membranes deposited on an inexpensive flexible polymer membrane support layer for the first time, combining a polyvinyl alcohol (PVA)‒metal-ion layer and a pure metal-ion layer. The main role of the pure metal-ion layer is to act as the main nucleation sites for MOF membrane growth, while the PVA‒metal-ion layer acts as a slow-release metal-ion source, which supplements MOF crystal nucleation to repair any defects occurring. Membrane modules are necessary components for membrane applications, and spiral-wound modules are among the most common module formats that are widely applied in gas separation. A 4800 cm 2 spiral-wound membrane module was successfully prepared, demonstrating the practical implementation of large-area MOF membranes.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 19
·期 17
·2206915
·
IF 13.3
Kun He,Weiting Xu,Jingmei Tang,Yuan Lu,Chen Yi,Bailing Li,Hongzhou Zhu,Hongmei Zhang,Xiaohui Lin,Ya Feng,Manli Zhu,Jingru Shen,Mianzeng Zhong,Bo Li,Xidong Duan
2D materials with mixed crystal phase will lead to the nonuniformity of performance and go against the practical application. Therefore, it is of great significance to develop a valid method to synthesize 2D materials with typical stoichiometry. Here, 2D palladium sulfides with centimeter scale and uniform stoichiometric ratio are synthesized via controlling the sulfurization temperature of palladium thin films. The relationship between sulfurization temperature and products is investigated in depth. Besides, the high-quality 2D PdS 2 films are synthesized via sulfurization at the temperature of 450–550 °C, which would be compatible with back-end-of-line processes in semiconductor industry with considering of process temperature. The PdS 2 films show an n-type semiconducting behavior with high mobility of 10.4 cm 2 V −1 s −1 . The PdS 2 photodetector presents a broadband photoresponse from 450 to 1550 nm. These findings provide a reliable way to synthesizing high-quality and large-area 2D materials with uniform crystal phase. The result suggests that 2D PdS 2 has significant potential in future nanoelectronics and optoelectronic applications.
研究领域:
材料科学
·
纳米电子学
·
光电应用
✓ 已验证
DOI
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Jie Wang,Dongyuan Han,Bin Zhao,Ziang Zang,Huiyu Ji,Lang Liu,Ning Wang
Tin (Sn) perovskites have emerged as viable candidates for high-performance, lead-free perovskite light-emitting diodes (PeLEDs). However, the limited availability of efficient and stable Sn perovskites, and the development of large-area Sn PeLEDs encourage further research. Here, FPEA 2 SnI 4 (FPEAI, 4-fluoro-phenethylammonium iodide) perovskite is reported as a potential emitter for PeLEDs. To overcome the anisotropic carrier transport in layered FPEA 2 SnI 4 perovskites, an electronic push-pull effect strategy is introduced by incorporating 6-amino-4-hydroxy-2-naphthalenesulfonic acid (γ acid) molecule in FPEA 2 SnI 4 perovskites. The unique electronically push-pull configuration of γ acid establishes a cross-layer electron transfer channel, which mitigates electron aggregation within the organic layers, enhances electron injection and directional transfer, and effectively promotes radiative recombination. Furthermore, multifunctional γ acid provides multiple interaction sites for Sn perovskites, reducing defect state density and stabilizing FPEA 2 SnI 4 perovskites. Leveraging the enhanced robustness of FPEA 2 SnI 4 films with γ acid, a large-area Sn PeLED with an active area of 2.25 cm 2 , achieves a maximum luminance ( L max ) of 371 cd m −2 , a peak external quantum efficiency (EQE) of 15.49%, and an operational half-lifetime of 71.6 h at 100 cd m −2 . These findings underscore the application potential of Sn PeLEDs in the realms of solid-state lighting and planar display.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 8
·期 1
·69-76
·
IF 10.733
Xueshi Jiang,Lulu Sun,Wen Wang,Fei Qin,Cong Xie,Lin Hu,Yinhua Zhou
In this study, we report 10 cm2 nonfullerene solar cells with power conversion efficiency of 10.24%. The demonstration of the large-area cells is based on the HxMoO3-assisted growth of two silver electrodes, namely, the ultrathin-transparent electrode (on the top) and opaque electrode (at the bottom). The device structure has the configuration glass/HxMoO3/opaque Ag (70 nm)/active layer/HxMoO3/ultrathin Ag (8 nm)/MoO3. The chemically reactive HxMoO3 could react with silver oxide during the growth of the initial few nanometers of silver, as inferred from X-ray spectroscopy measurements. The reaction increases the nucleus sites that assist the continuous and uniform growth of the silver films. The percolation threshold thickness of conductive ultrathin Ag films on HxMoO3 can be as low as 4 nm. The root-mean-square surface roughness of opaque silver (70 nm) grown on the HxMoO3 surface is as low as 1.06 nm. HxMoO3 facilitates the growth of uniform, continuous and smooth silver films that enable the efficient large-area nonfullerene organic solar cells.
研究领域:
材料科学
·
光电化学
✓ 已验证
DOI
高影响因子
Polymers
·
2021
·Vol. 13
·期 21
·3768
·
IF 4.329
Sijun Li,Donghui Kou,Shufen Zhang,Wei Ma
Intelligent structural colors have received extensive attention in recent years due to their diverse applications. However, the large-area, uniform, and cost-effective fabrication of ultra-thin structural color films is still challenging. Here, for the first time, we design and employ an ultrasonic spray-coating technique with non-toxic, green nano-silica and polyvinylpyrrolidone as raw materials, to prepare structural color films on silicon wafers. Due to the addition of polyvinylpyrrolidone, the coffee-ring effect during droplet drying is suppressed and uniform composite films are formed. We further perform a detailed study of the influence of various processing parameters including silica/polyvinylpyrrolidone concentration, substrate temperature, nozzle-to-substrate distance, and number of spray-passes on film roughness and thickness. By increasing the number of spray-passes from 10 to 30, the film thickness from 120 to 340 nm is modulated, resulting in different colors, and large-area and uniform colors on commercial round silicon wafers with 15 cm diameter are achieved. The silica/polyvinylpyrrolidone composite films show strong hydrophilicity and are sensitive to humidity changes, leading to quickly tunable and reversible structural colors. Quartz crystal microbalance with dissipation demonstrates water vapor adsorption and condensation on the nanofilm when increasing environmental humidity. Thereby, ultrasonic spray-coating as a novel film fabrication technique provides a feasible scheme for large-area preparation of intelligent structural colors.Keywords:composite structural color films;ultrasonic spray-coating;large-area;hydrophilic property;humidity sensitive
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2023
·Vol. 15
·期 1
·1-13
·
IF 26.6
Lei Pengyang,Wang Jinhui,Gao Yi,Hu Chengyu,Zhang Siyu,Tong Xingrui,Wang Zhuanpei,Gao Yuanhao,Cai Guofa
Transition metal phosphates were first developed for the electrochromic application.
The obtained NiHPO 4 ·3H 2 O film achieves an ultra-large optical modulation of 90.8%, and the electrochromic mechanism is systematically elucidated using in situ and ex situ techniques.
A large-area electrochromic smart window with 100 cm 2 is constructed, which displays superior performances in regulating natural lighting and storing electrical charges.
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
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Chunxin Jin,Shuai Liu,Xiaofang Chen,Yanhong Li,Jürgen Caro,Aisheng Huang
Optimal orientation is the key factor to optimize the gas separation performance of metal-organic framework (MOF) membranes. However, it is still greatly challenging to prepare large-area oriented MOF membranes for industrial applications. Herein, we prepared compact and (100) oriented zeolitic-imidazolate framework-8 (ZIF-8) membranes with membrane area up to 500 cm 2 on the graphite substrate via support-induced strategy within 2 h. With membrane thickness of only 620 nm, the (100) oriented ZIF-8 membranes exhibit high gas separation performances due to the reduction of inter-crystalline defects and permeation resistance. At 100 °C and 1 bar, the separation factors of H 2 /CO 2 , H 2 /CH 4 and H 2 /C 3 H 8 are 18.5, 58.2 and 101.6, respectively, with H 2 permeance of about 160 x 10 −9 mol m −2 s −1 ·Pa −1 . The different positions of the 500 cm 2 ZIF-8 membrane show complete consistency in orientation and separation performance, recommending this membrane suitable for future industrial applications. Further, also oriented ZIF-67 and MOF-303 membranes can be consistently prepared by this strategy, confirming its versatility for the preparation of large-area MOF membranes.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Communications Materials
·
2024
·Vol. 5
·期 1
·1-9
·
IF 7.5
Tao Yuli,Liang Zheng,Ye Jiajiu,Xu Shendong,Zhang Hui,Xu Huifen,Cao Chentai,Yang Quan,Abbas Zameer,Liu Guozhen,Pan Xu
With the area of perovskite films and devices increases, the performance tends to deteriorate, which can be attributed to the accumulation of defects at the bottom surface without proper passivation. Here, we introduce the 1-(4-Fluorophenyl)−2-pyrrolidone molecule (FPP) as additive in large-area blade-coating perovskite films. During the top-down crystallization process, the FPP molecule form an intermediate phase with the perovskite components and subsequently self-deposit at the bottom surface. Consequently, the crystallization kinetics of the large-area thin films are regulated, and the bottom surface is effectively and uniformly passivated in one single-step processing. By employing this self-deposited passivation method (SDP), the efficiency decrease caused by the expansion of the device area has been significantly suppressed and the devices yield power conversion efficiency of 23.41% (0.09 cm 2 ), 22.43% (1 cm 2 ), and 20.75% (24 cm 2 ). The method is compatible for commercial manufacturing with scaling up solar cell area and holding high efficiency.
研究领域:
材料科学
·
光伏技术
·
表面化学
✓ 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）