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The preparation, characterization, and catalytic performance of porous fibrous LaFeO
Zhifei Wu, Li Wang, Yixiao Hu, Hui Han, Xing Li, Ying Wang
《化学科学与工程前沿(英文)》 2020年 第14卷 第6期 页码 967-975 doi: 10.1007/s11705-020-1922-0
关键词: NO oxidation porous fibrous LaFeO3 sunflower seed shell
纤维膜在机械压力下由不透明到透明的转变 Article
王超, 赵景, 刘柳, 张鹏, 王先锋, 俞建勇, 丁彬
《工程(英文)》 2022年 第19卷 第12期 页码 84-92 doi: 10.1016/j.eng.2021.02.018
智能可穿戴设备、电子皮肤、空气过滤和组织工程等领域,对透明薄膜材料或基材的需求很大。传统透明材料,如玻璃、塑料等,由于缺乏相互连通的孔道、不理想的孔隙率和柔性,不能满足这些新兴领域的要求。静电纺丝纤维膜因其具有小孔径、高孔隙率和良好的柔性等优点可以弥补传统材料的不足,因此,开发透明的静电纺丝纤维膜具有重大的价值。本文报道了一种简单有效的方法,在不使用任何其他添加剂的情况下,通过机械压力,直接将静电纺丝纤维膜制备成柔性的、有孔的透明纤维膜材料。同时,首次总结了压制后聚合物的透明度性能与分子结构之间的关系。经过机械压力处理后,纤维膜仍可以保持纤维形态、微米级孔道和一定的孔隙率。以聚苯乙烯静电纺丝纤维膜为例,所制备的透明聚苯乙烯纤维膜具有优异的光学性能和机械性能。透明纤维膜可实现高透光率(≈89%,可见光波长在550 nm处)、大孔隙率(10%~30%)和强的机械拉伸强度(≈148 MPa),该拉伸强度约为初始静电纺丝纤维膜的78倍。此外,本文基于透明纤维膜,利用真空辅助抽滤银纳米线和机械压力作用,制备出透明的导电纤维膜材料。与氧化铟锡导电薄膜相比,我们所制备的透明导电纤维膜展示出良好的导电性(9 Ω·sq-1,78%的透光率)和优异的机械性能(可承受大量的弯曲应力)。
Fibrous dysplasia involving the calvarium in children?
Chunquan CAI, Qian LI, Qingjiang ZHANG, Changhong SHEN
《医学前沿(英文)》 2009年 第3卷 第2期 页码 211-215 doi: 10.1007/s11684-009-0024-7
Dong Yang, Xiaoyan Zou, Yuanyuan Sun, Zhenwei Tong, Zhongyi Jiang
《化学科学与工程前沿(英文)》 2018年 第12卷 第3期 页码 440-449 doi: 10.1007/s11705-018-1700-4
In recent years, much effort has been focused on the development of the photocatalysts with high performance under visible light irradiation. In this paper, three-dimensional porous La-doped SrTiO3 (LST) microspheres were prepared by a modified sol–gel method, in which the agarose gel/SrCO3 microsphere and La2O3 were employed as the template and the La resource, respectively. The as-prepared LST microspheres exhibit a porous structure with a diameter of about 10 µm and a surface pore size of about 100 nm. The La element was doped into the crystal lattice of SrTiO3 by the substitution of La3+ for Sr2+. Therefore, the absorption edge of LST samples shifts toward the visible light region, and their photocatalytic activity for the Cr(VI) reduction is enhanced under visible light. Among all LST samples, LST-0.5 (the La3+ doping content is 0.5 wt-%) exhibited the highest visible-light photocatalytic activity, which can reduce 84% Cr(VI) within 100 min. This LST materials may become a promising photocatalyst for the facile treatment of wastewater containing poisonous heavy metal ions.
关键词: SrTiO3 La3+ doping porous microsphere visible-light photocatalysis Cr(VI) reduction
Songshan Jiang, Helen Daly, Huan Xiang, Ying Yan, Huiping Zhang, Christopher Hardacre, Xiaolei Fan
《化学科学与工程前沿(英文)》 2019年 第13卷 第4期 页码 718-726 doi: 10.1007/s11705-019-1804-5
关键词: microwave fibrous cellulose hydrolysis sugars mechanism
Mingyu Pi, Xiaodeng Wang, Dingke Zhang, Shuxia Wang, Shijian Chen
《化学科学与工程前沿(英文)》 2018年 第12卷 第3期 页码 425-432 doi: 10.1007/s11705-018-1726-7
Self-standing porous WP2 nanosheet arrays on carbon fiber cloth (WP2 NSs/CC) were synthesized and used as a 3D flexible hydrogen evolution electrode. Because of its 3D porous nanoarray structure, the WP2 NSs/CC exhibits a remarkable catalytic activity and a high stability. By using the experimental measurements and first-principle calculations, the underlying reasons for the excellent catalytic activity were further explored. Our work makes the present WP2 NSs as a promising electrocatalyst for hydrogen evolution and provides a way to design and fabricate efficient hydrogen evolution electrodes through 3D porous nano-arrays architecture.
关键词: WP2 nanosheet arrays hydrogen evolution electrocatalyst flexible electrode
Paratesticular fibrous pseudotumor: a report of five cases and literature review
null
《医学前沿(英文)》 2014年 第8卷 第4期 页码 484-488 doi: 10.1007/s11684-014-0325-3
Paratesticular fibrous pseudotumor is a rare benign tumor that originates from intrascrotal tissue, such as tunica vaginalis, epididymis, or spermatic cord. Five cases of fibrous pseudotumor in our hospital were reviewed retrospectively, and the clinical manifestations were analyzed. Three cases of unilateral nodules, comprising one case located in the tunica vaginalis and two cases located in the epididymis, underwent local excision of the unilateral nodule. Two cases of diffuse incrassation in the tunica vaginalis underwent right radical orchiectomy. Postoperative pathological examination showed that all were fibrous pseudotumors. An average follow-up of 26 months showed uneventful results without recurrence for all patients. Fibrous pseudotumor is not a neoplasm but a reactive fibrous inflammatory hyperplasia. Definitive diagnosis requires pathological examination. Radical orchiectomy should be avoided when possible, and local excision should be performed because of the lack of obvious evidence of potential malignancy.
Van Chinh NGUYEN; Trung Thanh TRAN; Trung NGUYEN-THOI; Quoc-Hoa PHAM
《结构与土木工程前沿(英文)》 2022年 第16卷 第12期 页码 1599-1620 doi: 10.1007/s11709-022-0891-4
关键词: sandwich plates functionally graded porous static bending Quasi-3D theory Q4 element
T. Chandra Sekhara REDDY
《结构与土木工程前沿(英文)》 2018年 第12卷 第4期 页码 490-503 doi: 10.1007/s11709-017-0445-3
关键词: artificial neural networks root mean square error SIFCON silica fume metakaolin steel fiber
Preparation and catalytic performance of La0.8Sr0.2CoO3 supported on the mullite fiber ceramic
ZENG Lingke, LIU Yanchun, LIU Ping′an, WANG Hui, SHUI Anze, DUAN Bilin
《化学科学与工程前沿(英文)》 2007年 第1卷 第4期 页码 372-376 doi: 10.1007/s11705-007-0067-8
关键词: porous conversion catalytic activity electron microscopy perovskite-type LaSrCoO
《化学科学与工程前沿(英文)》 2023年 第17卷 第8期 页码 1065-1074 doi: 10.1007/s11705-023-2313-0
Optimized porous clay heterostructure for removal of acetaldehyde and toluene from indoor air
Pu ZHAO,Lizhong ZHU
《环境科学与工程前沿(英文)》 2016年 第10卷 第2期 页码 219-228 doi: 10.1007/s11783-014-0760-z
关键词: porous clay heterostructure volatile organic compounds adsorption adsorbent indoor air
Maximum entropy based finite element analysis of porous media
Emad NOROUZI, Hesam MOSLEMZADEH, Soheil MOHAMMADI
《结构与土木工程前沿(英文)》 2019年 第13卷 第2期 页码 364-379 doi: 10.1007/s11709-018-0470-x
关键词: maximum entropy FEM fully coupled multi-phase system porous media
Chao Zhang, Chenbao Lu, Shuai Bi, Yang Hou, Fan Zhang, Ming Cai, Yafei He, Silvia Paasch, Xinliang Feng, Eike Brunner, Xiaodong Zhuang
《化学科学与工程前沿(英文)》 2018年 第12卷 第3期 页码 346-357 doi: 10.1007/s11705-018-1727-6
Porous polymers have been recently recognized as one of the most important precursors for fabrication of heteroatom-doped porous carbons due to the intrinsic porous structure, easy available heteroatom-containing monomers and versatile polymerization methods. However, the heteroatom elements in as-produced porous carbons are quite relied on monomers. So far, the manipulating of heteroatom in porous polymer derived porous carbons are still very rare and challenge. In this work, a sulfur-enriched porous polymer, which was prepared from a diacetylene-linked porous polymer, was used as precursor to prepare S-doped and/or N-doped porous carbons under nitrogen and/or ammonia atmospheres. Remarkably, S content can sharply decrease from 36.3% to 0.05% after ammonia treatment. The N content and specific surface area of as-fabricated porous carbons can reach up to 1.32% and 1508 m2·g−1, respectively. As the electrode materials for electrical double-layer capacitors, as-fabricated porous carbons exhibit high specific capacitance of up to 431.6 F·g−1 at 5 mV·s−1 and excellent cycling stability of 99.74% capacitance retention after 3000 cycles at 100 mV·s−1. Furthermore, as the electrochemical catalysts for oxygen reduction reaction, as-fabricated porous carbons presented ultralow half-wave-potential of 0.78 V versus RHE. This work not only offers a new strategy for manipulating S and N doping features for the porous carbons derived from S-containing porous polymers, but also paves the way for the structure-performance interrelationship study of heteroatoms co-doped porous carbon for energy applications.
关键词: porous polymers porous carbons sulfur and nitrogen doping supercapacitor
Hierarchically porous materials: Synthesis strategies and emerging applications
Minghui Sun, Chen Chen, Lihua Chen, Baolian Su
《化学科学与工程前沿(英文)》 2016年 第10卷 第3期 页码 301-347 doi: 10.1007/s11705-016-1578-y
标题 作者 时间 类型 操作
The preparation, characterization, and catalytic performance of porous fibrous LaFeO
Zhifei Wu, Li Wang, Yixiao Hu, Hui Han, Xing Li, Ying Wang
期刊论文
Fibrous dysplasia involving the calvarium in children?
Chunquan CAI, Qian LI, Qingjiang ZHANG, Changhong SHEN
期刊论文
Fabrication of three-dimensional porous La-doped SrTiO3 microspheres with enhanced visible light catalytic
Dong Yang, Xiaoyan Zou, Yuanyuan Sun, Zhenwei Tong, Zhongyi Jiang
期刊论文
Microwave-assisted catalyst-free hydrolysis of fibrous cellulose for deriving sugars and biochemicals
Songshan Jiang, Helen Daly, Huan Xiang, Ying Yan, Huiping Zhang, Christopher Hardacre, Xiaolei Fan
期刊论文
A 3D porous WP2 nanosheets@carbon cloth flexible electrode for efficient electrocatalytic hydrogen evolution
Mingyu Pi, Xiaodeng Wang, Dingke Zhang, Shuxia Wang, Shijian Chen
期刊论文
A novel finite element formulation for static bending analysis of functionally graded porous sandwich
Van Chinh NGUYEN; Trung Thanh TRAN; Trung NGUYEN-THOI; Quoc-Hoa PHAM
期刊论文
Predicting the strength properties of slurry infiltrated fibrous concrete using artificial neural network
T. Chandra Sekhara REDDY
期刊论文
Preparation and catalytic performance of La0.8Sr0.2CoO3 supported on the mullite fiber ceramic
ZENG Lingke, LIU Yanchun, LIU Ping′an, WANG Hui, SHUI Anze, DUAN Bilin
期刊论文
Fabricating sustainable lignin-derived porous carbon as electrode for high-performance supercapacitors
期刊论文
Optimized porous clay heterostructure for removal of acetaldehyde and toluene from indoor air
Pu ZHAO,Lizhong ZHU
期刊论文
Maximum entropy based finite element analysis of porous media
Emad NOROUZI, Hesam MOSLEMZADEH, Soheil MOHAMMADI
期刊论文
S-enriched porous polymer derived N-doped porous carbons for electrochemical energy storage and conversion
Chao Zhang, Chenbao Lu, Shuai Bi, Yang Hou, Fan Zhang, Ming Cai, Yafei He, Silvia Paasch, Xinliang Feng, Eike Brunner, Xiaodong Zhuang
期刊论文