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Aaditya Pendse Semih Cetindag Meng‐Hsuan Lin Angelina Rackovic Rousan Debbarma Soroush Almassi Brian P. Chaplin Vikas Berry Jerry W. Shan Sangil Kim 《Small (Weinheim an der Bergstrasse, Germany)》2019,15(49)
2D layered nanomaterials have attracted considerable attention for their potential for highly efficient separations, among other applications. Here, a 2D lamellar membrane synthesized using hexagonal boron nitride nanoflakes (h‐BNF) for highly efficient ion separation is reported. The ion‐rejection performance and the water permeance of the membrane as a function of the ionic radius, ion valance, and solution pH are investigated. The nonfunctionalized h‐BNF membranes show excellent ion rejection for small sized salt ions as well as for anionic dyes (>97%) while maintaining a high water permeability, ≈1.0 × 10?3 L m m?2 h?1 bar?1). Experiments show that the ion‐rejection performance of the membrane can be tuned by changing the solution pH. The results also suggest that the rejection is influenced by the ionic size and the electrostatic repulsion between fixed negative charges on the BN surface and the mobile ions, and is consistent with the Donnan equilibrium model. These simple‐to‐fabricate h‐BNF membranes show a unique combination of excellent ion selectivity and high permeability compared to other 2D membranes. 相似文献
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Wenbo Sheng Ihsan Amin Christof Neumann Renhao Dong Tao Zhang Erik Wegener Wei‐Liang Chen Paul Frster Hai Quang Tran Markus Lffler Andreas Winter Raul D. Rodriguez Ehrenfried Zschech Christopher K. Ober Xinliang Feng Andrey Turchanin Rainer Jordan 《Small (Weinheim an der Bergstrasse, Germany)》2019,15(19)
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Dan Liu Li He Weiwei Lei Karel D. Klika Lingxue Kong Ying Chen 《Advanced Materials Interfaces》2015,2(12)
Effective oil/water separation and removal of organic molecules from water are of worldwide importance for water source protection. Multifunctional sorbent materials with excellent sorption capacity, stability, and recyclability properties need to be developed. Here, flexible and multifunctional polymer/porous boron nitride nanosheets (BNNSs) membranes with high water permeability, exhibiting high effectiveness and stability in the purification of simulated wastewater tainted with either oil/water emulsion or organic molecules, are reported. Remarkably, the flexible nature of these porous membranes enables simplicity of operation for water remediation processing and ease of post‐processing collection. The composite membrane also displays a remarkably high permeability of 8 × 104 L μm m−2 h−1 bar−1, roughly three orders of magnitude higher than pure polymer, and excellent filter efficiencies for the pharmaceuticals ciprofloxacin, chlortetracycline, and carbamazepine (up to 14.2 L g−1 of BNNSs in the composite membrane for a concentration of 10 mg L−1 ciprofloxacin) and the dye methylene blue (up to 9.3 L g−1 of BNNSs in the composite membrane at a concentration of 30 mg L−1). Exhausted membranes can be readily rejuvenated by simple washing with retention of their high‐performance characteristics. The results demonstrate the potential efficacy and practicality of these membranes for water cleaning. 相似文献
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Photothermal Effect: Large Photothermal Effect in Sub‐40 nm h‐BN Nanostructures Patterned Via High‐Resolution Ion Beam (Small 22/2018) 下载免费PDF全文
Josué J. López Antonio Ambrosio Siyuan Dai Chuong Huynh David C. Bell Xiao Lin Nicholas Rivera Shengxi Huang Qiong Ma Soeren Eyhusen Ido E. Kaminer Kenji Watanabe Takashi Taniguchi Jing Kong Dimitri N. Basov Pablo Jarillo‐Herrero Marin Soljačić 《Small (Weinheim an der Bergstrasse, Germany)》2018,14(22)
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Photoreduction: Defect‐Rich Ultrathin ZnAl‐Layered Double Hydroxide Nanosheets for Efficient Photoreduction of CO2 to CO with Water (Adv. Mater. 47/2015) 下载免费PDF全文
Yufei Zhao Guangbo Chen Tong Bian Chao Zhou Geoffrey I. N. Waterhouse Li‐Zhu Wu Chen‐Ho Tung Lorna J. Smith Dermot O'Hare Tierui Zhang 《Advanced materials (Deerfield Beach, Fla.)》2015,27(47):7823-7823
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Photothermal Therapy: Metabolizable Ultrathin Bi2Se3 Nanosheets in Imaging‐Guided Photothermal Therapy (Small 30/2016) 下载免费PDF全文
Hanhan Xie Zhibin Li Zhengbo Sun Jundong Shao Xue‐Feng Yu Zhinan Guo Jiahong Wang Quanlan Xiao Huaiyu Wang Qu‐Quan Wang Han Zhang Paul K. Chu 《Small (Weinheim an der Bergstrasse, Germany)》2016,12(30):4158-4158
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Dielectric Engineering of a Boron Nitride/Hafnium Oxide Heterostructure for High‐Performance 2D Field Effect Transistors 下载免费PDF全文
Xuming Zou Chun‐Wei Huang Lifeng Wang Long‐Jing Yin Wenqing Li Jingli Wang Bin Wu Yunqi Liu Qian Yao Changzhong Jiang Wen‐Wei Wu Lin He Shanshan Chen Johnny C. Ho Lei Liao 《Advanced materials (Deerfield Beach, Fla.)》2016,28(10):2062-2069
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Defect‐Rich Ultrathin ZnAl‐Layered Double Hydroxide Nanosheets for Efficient Photoreduction of CO2 to CO with Water 下载免费PDF全文
Yufei Zhao Guangbo Chen Tong Bian Chao Zhou Geoffrey I. N. Waterhouse Li‐Zhu Wu Chen‐Ho Tung Lorna J. Smith Dermot O'Hare Tierui Zhang 《Advanced materials (Deerfield Beach, Fla.)》2015,27(47):7824-7831
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Synthesis of Large‐Sized Single‐Crystal Hexagonal Boron Nitride Domains on Nickel Foils by Ion Beam Sputtering Deposition 下载免费PDF全文
Haolin Wang Xingwang Zhang Heng Liu Zhigang Yin Junhua Meng Jing Xia Xiang‐Min Meng Jinliang Wu Jingbi You 《Advanced materials (Deerfield Beach, Fla.)》2015,27(48):8109-8115
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Cancer Theranostics: A Novel Top‐Down Synthesis of Ultrathin 2D Boron Nanosheets for Multimodal Imaging‐Guided Cancer Therapy (Adv. Mater. 36/2018) 下载免费PDF全文
Xiaoyuan Ji Na Kong Junqing Wang Wenliang Li Yuling Xiao Silvia Tian Gan Ye Zhang Yujing Li Xiangrong Song Qingqing Xiong Sanjun Shi Zhongjun Li Wei Tao Han Zhang Lin Mei Jinjun Shi 《Advanced materials (Deerfield Beach, Fla.)》2018,30(36)
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Lili Wang Qi Wen Pan Jia Meijuan Jia Diannan Lu Xiaoming Sun Lei Jiang Wei Guo 《Advanced materials (Deerfield Beach, Fla.)》2019,31(36)
Biological electrogenic systems use protein‐based ionic pumps to move salt ions uphill across a cell membrane to accumulate an ion concentration gradient from the equilibrium physiological environment. Toward high‐performance and robust artificial electric organs, attaining an antigradient ion transport mode by fully abiotic materials remains a great challenge. Herein, a light‐driven proton pump transport phenomenon through a Janus graphene oxide membrane (JGOM) is reported. The JGOM is fabricated by sequential deposition of graphene oxide (GO) nanosheets modified with photobase (BOH) and photoacid (HA) molecules. Upon ultraviolet light illumination, the generation of a net protonic photocurrent through the JGOM, from the HA‐GO to the BOH‐GO side, is observed. The directional proton flow can thus establish a transmembrane proton concentration gradient of up to 0.8 pH units mm?2 membrane area at a proton transport rate of 3.0 mol h?1 m?2. Against a concentration gradient, antigradient proton transport can be achieved. The working principle is explained in terms of asymmetric surface charge polarization on HA‐GO and BOH‐GO multilayers triggered by photoisomerization reactions, and the consequent intramembrane proton concentration gradient. The implementation of membrane‐scale light‐harvesting 2D nanofluidic system that mimics the charge process of the bioelectric organs makes a straightforward step toward artificial electrogenic and photosynthetic applications. 相似文献
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