DESALINATION
·
2023
·
IF 9.9
Qiu-Yu Zhu,Zi-Yun Xu,Jie-Han Fu,Jie Huang,Zhen-Liang Xu,Min Tong,En-Chao Li,Yong-Jian Tang
Currently, most nanofiltration membranes exhibit satisfactory separation performance on the anions or cations, and few membranes could concurrently separate anion and cation . Therefore, preparing nanofiltration membranes with excellent separation performance for both anionic and cationic ions remains a challenge. Herein, we have developed a series of nanofiltration membranes using conventional interfacial polymerization with different ratios of trimesoyl chloride (TMC) and piperazine (PIP) concentrations. In the interface polymerization process, the amine groups carried by PIP imparted a positive charge, while the hydrolysis of acyl chloride groups resulted in the generation of carboxylic acid groups that introduced a negative charge. The mix-charged nanofiltration membrane could be fabricated by varying PIP/TMC concentration ratios. The optimized membrane exhibited high rejection rates for bivalent ions (Na 2 SO 4 rejection of 96.6 %, MgCl 2 rejection of 93.0 %), and its selectivity for Mg 2+ /Li + mixed solution was improved significantly. This work provides a novel approach for the development of nanofiltration membranes capable of effectively separating mono-/divalent ions.
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
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·
IF 3.5
Wenhao Dou,Bingzhu Wang,Daxin Li,Haobo Jiang,Xiaoliang Sun,Ling Li,Yingying Wang,Zhihua Yang,Dechang Jia,Yu Zhou
To enhance the ablation resistance of porous C sf /MA–SiBCN composites, the polymer infiltration and pyrolysis (PIP) process is adopted to obtain layered C sf /SiBCN composites containing MA–SiBCN and PDCs–SiBCN. After ablation for 10 s, the ablative layer fails to remain on the C sf /MA–SiBCN surface with mass ablation rate of 0.062 g/s and linear ablation rate of 0.208 mm/s, while the dense C sf /SiBCN surface is covered by a dense and stable ablative layer mainly consisting of amorphous SiO 2 glassy phase due to the synergistic ablation effect of MA–SiBCN and PDCs–SiBCN, which could resist the intense scour by ablation flame and prevent internal corrosion, and thus the ablation resistance improves with a 37% decrease in mass ablation rate (0.039 g/s) and an 18% decrease in linear ablation rate (0.171 mm/s), respectively.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Cuiyan Li,Jintao Wang,Haibo Ouyang,Tianzhan Shen,Zihao Chen,Leer Bao,Yanlei Li,Qiaoqiao Wang
s To reduce the cost of C/C-ZrC-SiC composites, an inorganic salt strategy was proposed for fabricating these composites using the PIP method. The precursor solution, composed of zirconium tetrachloride, tetraethoxysilane, and furfuryl alcohol, exhibits lower viscosity, facilitating more efficient infiltration into the C/C matrix and reducing porosity in the final composite. Fine ZrC and SiC particles, with an average particle size of 2.03 μm, were homogeneously distributed within the composite matrix. The resulting material demonstrated a flexural strength of 193.2 MPa, along with linear and mass ablation rate of 0.03 μm/s and 0.10 mg/s, respectively. The uniform distribution of fine ZrC and SiC particles within the dense matrix significantly enhances mechanical properties and ablation resistance. During ablation, these particles promote the formation of a protective oxide scale consisting of a dense outer ZrO 2 layer and an inner SiO 2 layer. The dense ZrO 2 layer effectively retards oxygen diffusion into the composite, providing excellent resistance to mechanical erosion, while the continuous SiO 2 layer minimizes the ingress of oxidizing gases, further enhancing ablation resistance. This study demonstrates that the inorganic salt strategy can be used to fabricate C/C-ZrC-SiC composites at a lower cost while achieving superior properties, offering a promising approach for producing C/C-UHTCs composites.
研究领域:
材料科学
·
航空航天工程
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Cuiyan Li,Siyi Qi,Haibo Ouyang,Tianzhan Shen,Zihao Chen,Yanlei Li,Jiaqi Liu
To develop active thermal protection for ultra-high temperature ceramics, C/C-ZrC-CuNi composites were fabricated using a PIP method. This study systematically studied the influence of CuNi alloy content on the microstructure, mechanical properties, thermal conductivity, and ablation resistance of the composites. The incorporation of CuNi alloy significantly enhanced the sintering of the ZrC-C matrix, resulting in improved densification of the composites. Furthermore, the presence of CuNi alloy promoted the graphitization of the carbon matrix, thereby enhancing the thermal conductivity. The composites with the highest CuNi alloy content (ZCN4 sample) exhibited the greatest density（2.26 g/cm 3 ） and thermal conductivity（32.3 W/m·k）, along with superior ablation resistance, with mass and line ablation rates of 2.09 mg/s and 2.06 μm/s. This enhanced ablation resistance can be primarily attributed to the sweating cooling effect of the CuNi alloy, which effectively reduces the ablation temperature. Additionally, the formation of Cu 2 O and NiO during ablation acts as sintering aids, facilitating the development of a compact ZrO 2 scale that resists flame erosion. The increased thermal conductivity of the composite further mitigates the temperature rise on the ablation surface.
研究领域:
材料科学
·
航空航天工程
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产品关联
DOI
高影响因子
AICHE JOURNAL
·
2012
·Vol. 59
·期 1
·215-228
·
IF 2.261
Zhihua Qiao,Zhi Wang,Chenxin Zhang,Shuangjie Yuan,Yaqun Zhu,Jixiao Wang,Shichang Wang
Polyvinylamine (PVAm) was modified using a cross-linking agent containing carriers piperazine (PIP). Attenuated total reflectance fourier transform infrared, elemental analyzer, and X-ray diffraction were used to characterize the PIP-modified PVAm. The PVAm–PIP/polysulfone (PS) composite membrane was developed by coating PVAm–PIP mixed solutions with different mass ratios of PIP/PVAm (m PIP /m PVAm ) on the PS ultrafiltration membrane. The effects of m PIP /m PVAm (from 0.715 to 2.860) in the coating solutions and wet coating thickness on the gas performance of the PVAm–PIP/PS composite membrane were investigated. The PVAm–PIP/PS composite membrane prepared showed higher performance than other membranes reported in the literature due to the large increase of the introducing carrier concentration and low crystallinity. Moreover, the separation performance stability of the PVAm–PIP/PS composite membrane was investigated and no deterioration in the membrane permselectivity was observed. Finally, the economic evaluation of the membrane with the highest performance prepared was carried out. © 2012 American Institute of Chemical Engineers AIChE J, 59: 215–228, 2013
研究领域:
材料科学
·
化学工程
·
气体分离膜
·
高分子化学
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DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2026
·Vol. 37
·期 6
·e70630
·
IF 3.8
Caiyue Gao,Longhao Xie,Shuhong Jiang,Kainat,Hong Chen,Honghai Yang,Jun Wang
In order to obtain a loose selective layer of NFC membranes for dye desalination, a novel polyesteramide composite nanofiltration membrane based on Galp/PIP was fabricated by interfacial polymerization (IP) with d -(+)-galactose (Galp) and piperazine (PIP) as the alcoholic hydroxyl-amino mixed aqueous monomer and trimesoyl chloride (TMC) as the organic monomer in this work. The influence of the Galp/PIP weight ratio on the membrane's properties and separation performance was systematically investigated. The results indicate that the water flux and dye wastewater flux, the thickness of the selective layer, surface roughness, molecular weight cutoff (MWCO), and average pore size increased; however, the surface zeta potential became less negative due to the neutral charge of Galp, and the water contact angle decreased with the increase of the Galp/PIP. The water permeance and dye rejection were strongly dependent on the Galp/PIP ratio. At the optimal ratio of 4/6, the water permeation and the dye wastewater flux were up to 19.7 and 13.8 L/m 2 h bar, respectively, and the RB5 rejection was 92%. Compared to 0/10, the water permeation and the dye wastewater flux increased 59.2% and 57.5%, respectively, and the RB5 rejection was 97.4%, while the NaCl rejection was below 5%. In addition, this outstanding fractionation performance remained stable during extended operation with simulated dye/salt wastewater.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Xishi Wu,Tongzhou Chen,Bijie Wang,Yujie Song,Qing Huang,Zhengren Huang
In this study, novel polyborosilazane-derived SiBCN(O) ceramic was used as self-healing component in self-healing C f /SiBCN(O) composite, which was prepared by polymer infiltration and pyrolysis (PIP) process. Molecular-level structure design of boron-containing ceramic precursors was utilized to achieve uniform dispersion of boron-containing self-healing components in prepared composites. No elemental diffusion was observed at the interface of ceramic matrix and carbon fibers, which resulted in stable SiBCN(O) structure. In addition, boron was uniformly distributed in C f /SiBCN(O) composite ceramic matrix , which was beneficial for self-healing of cracks. Cracks and indentations were able to heal at high temperatures in air. The best crack-healing behavior occurred in air atmosphere at 1000 °C, with nearly complete crack healing. This excellent self-healing behavior was achieved because silicon and boron atoms in SiBCN(O) ceramic reacted with available oxygen at high temperatures to form SiO 2 (l), B 2 O 3 (l), and B 2 O 3 ·xSiO 2 liquid phases, which effectively filled cracks. In general, as-prepared C f /SiBCN(O) composite exhibited excellent self-healing properties and shows great application potential in high-temperature environment applications such as aviation, aerospace, and nuclear power.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN PHOTOVOLTAICS
·
2024
·
IF 8
Debesh Devadutta Mishra,Pranati Kumari Rath,Natarajan Thirugnanam,Tao Shen,Zihe Chen,Zexian Zhang,Xinghang Liu,Jinhua Li,Xianbao Wang,Cher Ming Tan
The suitable band gap with outstanding optoelectronic characteristics makes Sn-based perovskites one of the promising candidates for the preparation of efficient lead-free perovskite solar cells (PSCs). However, preparing Sn 2+ -based PSCs is very difficult due to the ready oxidation of Sn 2+ to Sn 4+ when exposed to air. In this work, by incorporating the trimethylamine borane complex (TMAB) as an antioxidant additive into the perovskite precursor solution along with excess SnF 2 , we report the fabrication of air-stable FASnI 3 -based solar cells. The complex formed by TMAB-SNF 2 (additive layer) enables in-situ encapsulation of perovskite grains. This layer considerably improves the oxidation stability of the perovskite layer by eliminating oxygen vacancies from the NiO hole transport. The resulting PSCs can maintain more than 70% of the efficiency over 45 and 75 hours respectively in air and N 2 exposure without encapsulation. This can be regarded as a genuinely enhanced attribute, particularly considering the use of carbon in one of the electrodes in FASnI 3 perovskites. The findings suggest an alternative approach to provide effective and sustainable Sn-based PSCs in the future.
研究领域:
材料科学
·
能源科学
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产品关联
DOI
高影响因子
PROGRESS IN PHOTOVOLTAICS
·
2025
·Vol. 33
·期 9
·1024-1031
·
IF 7.6
Minghui Li,Jun Zhou,Xiting Lang,Xirui Liu,Hao Tian,Junchuan Zhang,Jian Liu,Yongjie Jiang,Yangyang Gou,Mengjin Yang,Jichun Ye,Chuanxiao Xiao
Potential-induced degradation (PID) presents a significant challenge to the long-term reliability of perovskite solar cells (PSCs) in commercial applications. Research on PID in PSCs is still in its early stages, and the polarization-type PID (PID-p) remains poorly understood. In this study, we used advanced microscopic techniques to investigate the underlying mechanisms of PID-p in PSCs. After 100 h of PID stress, the devices experienced severe performance loss, with efficiency reduced to 20.9% of its initial value. This degradation was primarily driven by a decrease in short-circuit current and fill factor, while the open-circuit voltage remained relatively stable. Our findings reveal that the accumulation of sodium ions at the glass/film interface triggers the formation of an electron inversion layer at the perovskite's bottom, leading to performance decline. Electrical and mechanical characterizations further confirm changes in material properties, particularly at the hole transport layer/perovskite interface, contributing to the degradation.
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产品关联
DOI
高影响因子
PROGRESS IN PHOTOVOLTAICS
·
2015
·Vol. 23
·期 12
·1828-1836
·
IF 7.584
Xinsheng Liu,Chao Chen,Liang Wang,Jie Zhong,Miao Luo,Jie Chen,Ding-Jiang Xue,Dengbing Li,Ying Zhou,Jiang Tang
Sb 2 Se 3 has attracted great research interest very recently as a promising absorber material for thin film photovoltaics due to its suitable bandgap, high absorption coefficient, and non-toxic, low cost, and earth abundant nature. In this work, a significant efficiency improvement to 4.8% of superstrate cadmium sulfide (CdS)/Sb 2 Se 3 solar cells is obtained by the controlled addition of oxygen during thermal evaporation of Sb 2 Se 3 films. Systematic materials and device physics characterization reveal that oxygen addition during Sb 2 Se 3 film evaporation significantly improves the CdS/Sb 2 Se 3 heterojunction quality through effective passivation of interfacial defect states, resulting in a substantial enhancement in device circuit voltage and short circuit current density. The 4.8% device is the highest efficiency thus far reported for Sb 2 Se 3 thin film solar cells. Copyright © 2015 John Wiley & Sons, Ltd.
研究领域:
材料科学
·
光伏技术
✓ 已验证
DOI
高影响因子
PROGRESS IN PHOTOVOLTAICS
·
2016
·Vol. 25
·期 1
·113-122
·
IF 7.365
Bo Yang,Sikai Qin,Ding-jiang Xue,Chao Chen,Yi-su He,Dongmei Niu,Han Huang,Jiang Tang
Because of its tunable band gap and band position, Sb 2 (Se 1 − x S x ) 3 (0 ≤ x ≤ 1) is a promising light-absorbing material for photovoltaic device applications. However, no systematic study on the synthesis and characterization of single-phase polycrystalline Sb 2 (Se 1 − x S x ) 3 thin films has been reported. Through introducing in situ sulfurization into the rapid thermal evaporation process, a series of single-phase, highly crystalline Sb 2 (Se 1 − x S x ) 3 films with x = 0.09, 0.20, 0.31, and 0.43 were successfully obtained, with the corresponding band gap, band position and film morphology fully revealed. Futhermore, solar cells with superstrate ITO/CdS/Sb 2 (Se 1 − x S x ) 3 /Au structure were fabricated and carefully optimized. Finally, a champion device having 5.79% solar conversion efficiency was obtained employing uniform Sb 2 (Se 0.80 S 0.20 ) 3 absorber layer. Our experimental investigation confirmed that Sb 2 (Se 1 − x S x ) 3 is indeed a very promising absorber material worth further optimization. Copyright © 2016 John Wiley & Sons, Ltd.
研究领域:
材料科学
·
光伏技术
·
薄膜技术
·
半导体材料
✓ 已验证
DOI
高影响因子
PROGRESS IN PHOTOVOLTAICS
·
2017
·Vol. 25
·期 12
·1022-1033
·
IF 6.726
Jie Xu,Ziyang Hu,Like Huang,Xiaokun Huang,Xianyu Jia,Jing Zhang,Jianjun Zhang,Yuejin Zhu
The development of organometal halide perovskite solar cells has grown rapidly and the highest efficiency of the devices has recently surpassed 22%. Because these solar cells contain toxic lead, a sustainable strategy is required to prevent environmental pollution and avoid healthy hazard caused by possible lead outflow. Here, in situ recycling PbI 2 from thermal decomposition CH 3 NH 3 PbI 3 perovskite films for efficient perovskite solar cells was developed. The thermal behavior of CH 3 NH 3 PbI 3 perovskite and its individual components were examined by thermogravimetric analysis. By optimizing the process of thermal decomposition CH 3 NH 3 PbI 3 film, the complete conversion from CH 3 NH 3 PbI 3 to pure PbI 2 layer with a mesoporous scaffold was achieved. The mesoporous structure readily promotes the conversion efficiency of perovskite and consequently results in high-performance device. A perovskite crystal growth mechanism on the mesoporous PbI 2 structure was proposed. These results suggest that in situ recycled PbI 2 scaffolds can be a new route in manipulating the morphology of the perovskite active layer, providing new possibilities for high performance. Meanwhile, the risk of lead outflow can be released, and the saving-energy fabrication of efficient solar cells can be realized.
研究领域:
材料科学
·
环境科学
·
能源技术
✓ 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）