Article
Engineering, Chemical
Seung-Young Choi, Sungmin Cho, Dongkyu Kim, Jaeyong Kim, Gwangho Song, Rahul Singh, Choongik Kim
Summary: Fine-tuning the nanochannels of ion conducting membrane using heterocyclic imidazole compound as an additive for Nafion effectively enhances membrane performance. The developed membrane with wider and continuous nanochannel configuration, boosted proton conduction through hydrogen bonding interaction, showed improved proton conductivity up to 23% and 50% under high and low humidity condition, respectively. Implemented in fuel cell application, the membrane exhibited enhanced power density without performance degradation.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Kecheng Guan, Zhaohuan Mai, Siyu Zhou, Shang Fang, Zhan Li, Ping Xu, Yu-Hsuan Chiao, Mengyang Hu, Pengfei Zhang, Guorong Xu, Keizo Nakagawa, Hideto Matsuyama
Summary: Subnanometer interlayer space in graphene oxide (GO) laminates is important for permselective membrane nanochannels. The precise control of nanochannel space and the role of confined nanochannel chemistry in selective water/ion separation are still challenging. This study used macrocyclic molecules with consistent basal plane but varying side groups to modify nanochannels in GO laminates, and demonstrated the side-group dependence of angstrom-precision tunability for channel free space and the energy barrier setting for ion transport. The study provides insights into functional-group-dependent intercalation modifications of GO laminates for structural control and nanochannel design.
Article
Engineering, Chemical
Wanru Zhai, Maohuai Wang, Sen Liu, Shengyu Xu, Hao Dong, Lu Wang, Shuxian Wei, Zhaojie Wang, Siyuan Liu, Xiaoqing Lu
Summary: Based on 2D-CAP, CAP-1S/CAP-1P monolayers were designed for H2 purification. MD and DFT approaches were used to investigate the performance and separation mechanisms of CAP-1S/CAP-1P membranes. Results showed that CAP-1S/CAP-1P membranes exhibited ultrahigh H2 permeances and complete selectivities. The study highlighted the potential of CAP-1P as a promising H2 separation membrane.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Guohui Cheng, Dan Wu, Sheng Wang, Xu Zhang, Peng Yu, Jin Chang, Xiaoyuan Chen
Summary: The size of theranostic nanoagents plays a crucial role in efficient tumor accumulation, imaging, and therapy; a size-changeable strategy has been proposed to overcome the dilemma caused by size paradox; this strategy enables the adjustment of theranostic agents' size on demand, enhancing their efficacy in tumor imaging and therapy.
Article
Computer Science, Information Systems
Kui Zhou, Ye Ding, Weihong Bi
Summary: By improving the PVO-based algorithm, a novel CPVO with changeable step size is proposed, which can choose suitable step size based on the number of watermark data bits, allowing for embedding more hidden data bits. Experimental results demonstrate that our scheme increases the embedding capacity while maintaining higher image quality, even outperforming some other state-of-the-art works in certain test images.
MULTIMEDIA TOOLS AND APPLICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Siyun Zhang, Ming Cheng, Manivannan Kalavathi Dhinakaran, Yue Sun, Haibing Li
Summary: Inspired by biological antiporter proteins, artificial nanochannels with antiporter behavior were fabricated for chiral sensing and separation. Multiligand-modified asymmetric channels significantly enhanced chiral distinction and separation of naproxen enantiomers. The asymmetric modified multiligand was crucial for achieving robust enantiomer separation.
Review
Biochemical Research Methods
Ya Sun, Rui Jiang, Lide Hu, Yongxin Song, Mengqi Li
Summary: Significant progress has been made in understanding the electrokinetic phenomena in nanochannels over the past decades. The compatibility of nanochannel dimensions with the electric double layer has revealed unexpected behaviors, making nanofluidic electrokinetics highly promising in materials science, biology, and chemistry. This review provides an overview of recent developments in both fundamental and applied research, encompassing techniques for constructing nanochannels, investigations of the electric double layer, electroosmotic flow and electrophoresis of nanoparticles, as well as applications in iontronics, sensing, and biomolecule separation.
Article
Chemistry, Physical
Yasunari Shinoda, Masakazu Takeuchi, Norikazu Dezawa, Yasuhiro Komo, Takuya Harada, Hiroki Takasu, Yukitaka Kato
Summary: A new reverse build-up method is developed to fabricate an economical H-2-permeable composite membrane with excellent H-2 permeation performance, which can effectively reduce the production cost.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Zhe Chen, Jianwen Yang, Chengpeng Ma, Ke Zhou, Shuping Jiao
Summary: Low dimensional materials, especially carbon materials, show high potential in various fields including water purification and energy conversion. The study investigates the filling of water and acetone molecules in graphene nanochannels, revealing different filling behaviors based on the interlayer distance d. Analysis of entropy, potential energy, and free energy during continuous filling helps understand the structural evolution of water and discuss the energy costs associated with it.
JOURNAL OF PHYSICAL CHEMISTRY B
(2021)
Review
Chemistry, Physical
Jing Pan, Shanwu Yu, Zhangwei Jing, Qitao Zhou, Yifan Dong, Xiaoding Lou, Fan Xia
Summary: Due to the high efficiency and clean process, electrocatalytic hydrogen evolution reaction (HER) is considered the most promising way for hydrogen production, while the catalytic activity for nonprecious electrocatalysts/electrodes is relatively low. Porous materials with channel structures have shown great potential towards outstanding HER performance.
Article
Chemistry, Multidisciplinary
Kecheng Guan, Yuandong Jia, Yuqing Lin, Shengyao Wang, Hideto Matsuyama
Summary: This study developed chemically converted graphene using a one-step method to achieve more stable and functional nanochannels, which can exclude approximately 90% of NaCl solutes from water in a pressure-driven filtration process.
Review
Chemistry, Physical
Zhong-Qiu Li, Guan-Long Zhu, Ri-Jian Mo, Ming-Yang Wu, Xin-Lei Ding, Li-Qiu Huang, Xing-Hua Xia
Summary: This review highlights the importance and potential of nanochannel-based energy harvesting technology in alleviating the energy crisis. The selectivity, permeability, and differences between single-pore and multi-pore systems are discussed. Three energy harvesting modes are introduced, and the challenges are briefly summarized.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Engineering, Chemical
Yang Liu, Zhongyun Liu, Brian E. Kraftschik, Vinod P. Babu, Nitesh Bhuwania, Daniel Chinn, William J. Koros
Summary: Raw natural gas contains impurities like H2S and CO2 which can be corrosive, but TEGMC hollow fiber membranes show efficient removal. The presence of hydrocarbons in the feed gas enhances selectivity, and competitive sorption could be a useful tool in tuning membrane performance.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Biochemical Research Methods
Hiroki Sano, Yutaka Kazoe, Ryoichi Ohta, Hisashi Shimizu, Kyojiro Morikawa, Takehiko Kitamori
Summary: In this study, a nanofluidic analytical system integrated with multiple nanochannel open/close valves was developed. The system successfully accomplished fluid operations such as sample injection, pL-level aliquot sampling, and flow switching by opening/closing specific valves. The study is expected to significantly improve the usability of nanofluidic analytical devices and enable the realization of complex analytical techniques such as single-cell proteomics.
Review
Materials Science, Multidisciplinary
Yi-Fu Gao, Yao Wang, Dong Zhou, Wei Lv, Fei-Yu Kang
Summary: This paper reviews the research progress and applications of graphene and its derivatives in seawater desalination, including single-layer graphene, nanoporous graphene, and graphene oxide. The permeability and selectivity of porous graphene membranes and lamellar graphene oxide membranes are discussed based on their intrinsic properties. Different preparation processes and their effects on the permselectivity are compared, and methods for regulating the permselectivity are analyzed. The use of graphene-based membranes in seawater desalination and future prospects are summarized.
NEW CARBON MATERIALS
(2022)
Article
Physics, Multidisciplinary
X. Y. Li, D. Y. Sun, X. G. Gong
Article
Chemistry, Multidisciplinary
Feng Liu, Deyan Sun
Article
Multidisciplinary Sciences
Wei Pan, Jing Wang, Deyan Sun
SCIENTIFIC REPORTS
(2020)
Article
Physics, Multidisciplinary
Wei Pan, Jing Wang, Deyan Sun
Article
Physics, Multidisciplinary
D. Y. Sun, X. G. Gong
NEW JOURNAL OF PHYSICS
(2020)
Article
Chemistry, Multidisciplinary
Feng Liu, Di Zhao, Deyan Sun
Summary: Based on molecular dynamics simulations, it was found that two-dimensional clusters at the interface between ionic crystals and their solutions exhibit an odd-even alternation in stability, affecting the stability of water molecules and providing insights into the nucleation and crystallization of solutions on ionic crystal surfaces.
Article
Materials Science, Multidisciplinary
Di Zhao, Feng Liu, Xiang-Mei Duan, De-Yan Sun
Summary: The study shows that the first adsorbed water layer on Au, Pt, and Pd surfaces has a smooth potential energy landscape with subtle structural evolution related to the competition between water-water and water-metal interactions. Although differences may arise from dispersion correction and choice of exchange-correlation functional, the interesting feature of a smooth potential energy landscape remains unchanged.
COMPUTATIONAL MATERIALS SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Hailu Wang, Fang Wang, Tengfei Xu, Hui Xia, Runzhang Xie, Xiaohao Zhou, Xun Ge, Weiwei Liu, Yicheng Zhu, Liaoxin Sun, Jiaxiang Guo, Jiafu Ye, Muhammad Zubair, Man Luo, Chenhui Yu, Deyan Sun, Tianxin Li, Qiandong Zhuang, Lan Fu, Weida Hu, Wei Lu
Summary: The proposed method offers a feasible route to store and efficiently collect hot electrons by intentionally mixing different phases in III-V semiconductor nanowires, generating additional energy levels to capture and store hot electrons, while core/shell nanowires demonstrate superiority in extracting hot electrons.
Article
Materials Science, Multidisciplinary
Di Zhao, Feng Liu, Xiangmei Duan, Deyan Sun
Summary: The study reveals that the orientation of dangling OH bonds in the first adsorbed water layer on noble metal surfaces plays a crucial role in adsorption stability. Specific distribution of these OH bonds is necessary for stability across various adsorption patterns. Additionally, the inplane arrangement of water molecules and the disorder in the orientation of dangling OH bonds contribute to a residual entropy in certain absorption structures, arising from competition between water-water and water-metal interactions.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Multidisciplinary Sciences
J. Wang, W. Pan, D. Y. Sun
Summary: In this paper, a new path integral formulation for quantum field theory is proposed and a corresponding Monte Carlo algorithm is developed. The computational efficiency is improved by eliminating the need for Hubbard-Stratonovich transformation and determinant calculation. The accuracy of Suzuki-Trotter decomposition is also enhanced.
SCIENTIFIC REPORTS
(2022)
Article
Physics, Fluids & Plasmas
D. M. Zhang, D. Y. Sun, X. G. Gong
Summary: By separating the barrier distribution in the potential energy landscape into Gaussian-like and power-law forms, researchers have found a general relationship between relaxation time and temperature, and discovered that glassy states only appear in a specific region of the landscape.
Article
Materials Science, Multidisciplinary
D. M. Zhang, D. Y. Sun, X. G. Gong
Summary: This article systematically investigates the dynamics behavior of nanoglasses and reveals the presence of structure transformation and metabasins below the glass transition temperature. The distribution of potential energies and alpha-relaxation time exhibits unique characteristics, indicating the intrinsic features of nanoglasses.
Article
Materials Science, Multidisciplinary
B. Lan, D. Y. Sun
Summary: The study introduces a definition of breathing modes based on power spectra of geometric quantities, which can cover various breathing modes of nanoclusters; By applying group theory, normal-mode analysis, and molecular dynamics simulations, the characteristics of breathing modes of Aln clusters are explored; Results indicate that the definition not only includes common breathing modes but also reveals some hidden modes.
Article
Chemistry, Physical
L. Wang, W. Pan, D. Han, W. X. Hu, D. Y. Sun
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Chemistry, Physical
L. Wang, W. Pan, W. X. Hu, D. Y. Sun
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
