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Hu L, Lee WI, Roy S, Subramanian A, Kisslinger K, Zhu L, Fan S, Hwang S, Bui VT, Tran T, Zhang G, Ding Y, Ajayan PM, Nam CY, Lin H. Hierarchically porous and single Zn atom-embedded carbon molecular sieves for H 2 separations. Nat Commun 2024; 15:5688. [PMID: 38971823 PMCID: PMC11227577 DOI: 10.1038/s41467-024-49961-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Accepted: 06/24/2024] [Indexed: 07/08/2024] Open
Abstract
Hierarchically porous materials containing sub-nm ultramicropores with molecular sieving abilities and microcavities with high gas diffusivity may realize energy-efficient membranes for gas separations. However, rationally designing and constructing such pores into large-area membranes enabling efficient H2 separations remains challenging. Here, we report the synthesis and utilization of hybrid carbon molecular sieve membranes with well-controlled nano- and micro-pores and single zinc atoms and clusters well-dispersed inside the nanopores via the carbonization of supramolecular mixed matrix materials containing amorphous and crystalline zeolitic imidazolate frameworks. Carbonization temperature is used to fine-tune pore sizes, achieving ultrahigh selectivity for H2/CO2 (130), H2/CH4 (2900), H2/N2 (880), and H2/C2H6 (7900) with stability against water vapor and physical aging during a continuous 120-h test.
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Affiliation(s)
- Leiqing Hu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Won-Il Lee
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Soumyabrata Roy
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA
- Department of Sustainable Energy Engineering, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh, India
| | - Ashwanth Subramanian
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, USA
| | - Kim Kisslinger
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - Lingxiang Zhu
- Department of Energy, National Energy Technology Laboratory, Pittsburgh, PA, USA
| | - Shouhong Fan
- Department of Mechanical Engineering, University of Colorado, Boulder, CO, USA
| | - Sooyeon Hwang
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - Vinh T Bui
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Thien Tran
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Gengyi Zhang
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Yifu Ding
- Department of Mechanical Engineering, University of Colorado, Boulder, CO, USA
| | - Pulickel M Ajayan
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA
| | - Chang-Yong Nam
- Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, NY, USA
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - Haiqing Lin
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY, USA.
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Tao X, Yang P, Liu Z, Qin S, Hu J, Huang ZX, Chen X, Qu JP. Acid-Doped Pyridine-Based Polybenzimidazole as a Positive Triboelectric Material with Superior Charge Retention Capability. ACS NANO 2024; 18:4467-4477. [PMID: 38263634 DOI: 10.1021/acsnano.3c11087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
The energy conversion efficiency of a triboelectric nanogenerator (TENG) is severely limited by the charge density of triboelectric materials, while drastic and unavoidable charge decay happens during contact due to the insufficient charge retention capacity of positive triboelectric materials. Here, elaborately synthesized acid-ion-doped pyridine-based polybenzimidazole processing with strong charge retention capability is demonstrated to couple with negatively corona-polarized electrets. As illustrated by thermal stimulation and an ion mass spectrometer, the formation of acid-ion chimerism processes high activation energy for stored charges, and the selective anion migration can compensate the escape of polarized charge. Accordingly, the charge density can reach up to 596 μC m-2 and the charge retention rate reaches 49.7%, which is so far the highest intrinsic charge density obtained in the open air. Thus, the ionic chimerism strategy provides an effective way to suppress the charge escaping in the open air and gives a great expandable avenue for the material challenges of TENG's practical deployment.
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Affiliation(s)
- Xinglin Tao
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Peng Yang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Zhaoqi Liu
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Siyao Qin
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jun Hu
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Zhao-Xia Huang
- National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering, Ministry of Education; Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing; Department of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
| | - Xiangyu Chen
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China
- School of Nanoscience and Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jin-Ping Qu
- National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering, Ministry of Education; Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing; Department of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, People's Republic of China
- School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, People's Republic of China
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