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Liang J, Zhang X, Liu TQ, Gao XD, Liang WB, Qi W, Qian LJ, Li Z, Chen XM. Macroscopic Heterostructure Membrane of Graphene Oxide/Porous Graphene/Graphene Oxide for Selective Separation of Deuterium Water from Natural Water. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2206524. [PMID: 36127132 DOI: 10.1002/adma.202206524] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/19/2022] [Indexed: 06/15/2023]
Abstract
Deuterium water (D2 O) is a strategic material that is widely used in and scientific research and has applications in fields such as nuclear energy generation. However, its content in natural water is extremely low. Therefore, the development of a room-temperature technology for achieving simple, efficient, and low-cost separation of D2 O from natural water is challenging. In this study, porous graphene (PG) nanosheets with "crater-like" pores are sandwiched between two layers of graphene oxide (GO) membranes to prepare a GO/PG/GO membrane with a macroscopic heterostructure, which can be used to separate D2 O and H2 O by pressure-driven filtration. At 25 °C, the rejection rate of D2 O is ≈97%, the selectivity of H2 O/D2 O is ≈35.2, and the excellent performance can be attributed to the difference of transmembrane resistance and flow state of H2 O and D2 O in the confinement state. In addition, the D2 O concentration in natural water is successfully enriched from 0.013% to 0.059% using only one stage, and the membrane exhibits excellent structural and cycling stability. Therefore, this method does not require ultralow temperatures, high energy supplies, complex separation equipment, or the introduction of toxic chemicals. Thus, it can be directly applied to the large-scale industrial production and removal of D2 O.
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Affiliation(s)
- Jing Liang
- Frontiers Science Center for Rare Isotopes, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- Institute of National Nuclear Industry, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- School of Nuclear Science and Technology, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
| | - Xin Zhang
- Frontiers Science Center for Rare Isotopes, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- Institute of National Nuclear Industry, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- School of Nuclear Science and Technology, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
| | - Tian-Qi Liu
- Frontiers Science Center for Rare Isotopes, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- Institute of National Nuclear Industry, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- School of Nuclear Science and Technology, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
| | - Xu-Dong Gao
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, 18 Tianshui Road, Lanzhou, 730000, China
| | - Wen-Bin Liang
- Frontiers Science Center for Rare Isotopes, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- Institute of National Nuclear Industry, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- School of Nuclear Science and Technology, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
| | - Wei Qi
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, 430000, China
| | - Li-Juan Qian
- School of Nuclear Science and Technology, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
| | - Zhan Li
- Frontiers Science Center for Rare Isotopes, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- Institute of National Nuclear Industry, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- School of Nuclear Science and Technology, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
| | - Xi-Meng Chen
- Frontiers Science Center for Rare Isotopes, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- Institute of National Nuclear Industry, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
- School of Nuclear Science and Technology, Lanzhou University, 222 Tianshui South Road, Lanzhou, 730000, China
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Han Y, Yan Z, Jin L, Liao J, Feng G. In situ study on interactions between hydroxyl groups in kaolinite and re-adsorption water. RSC Adv 2020; 10:16949-16958. [PMID: 35496922 PMCID: PMC9053203 DOI: 10.1039/d0ra01905d] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/15/2020] [Indexed: 11/25/2022] Open
Abstract
The interactions between O–H groups in kaolinite and re-adsorption water is an important aspect that should be considered in the hydraulic fracturing method for the production of shale gas, because the external water adsorbed by kaolinite in shale would significantly affect the desorption of methane. In this study, the interactions were investigated via changing the amount of O–H groups and re-adsorption water in kaolinite by heating treatment and water re-adsorption. To overcome the overlap of IR vibration bands of the O–H functional groups in H2O and those in parent kaolinite, kaolinite samples with D2O re-adsorption were prepared by drying the H2O from raw kaolinite and soaking the dried kaolinite in D2O. The interactions between O–H groups in kaolinite and D2O molecules were investigated by in situ DRIFT and TG-MS. The results demonstrated that the vibration at 3670 ± 4 cm−1 in the DRIFT spectra could be due to the outer O–H groups of the octahedral sheet on the upper surface of the kaolinite microcrystal structure, rather than a type of inner-surface O–H group. All types of O–H groups, including the inner O–H groups in kaolinite, could be transformed into O–D groups after D2O re-adsorption at room temperature. The inner-surface O–H groups in kaolinite are the most preferred sites for D2O re-adsorption; thus, they would be the key factor for studying the effect of re-adsorption water on methane desorption. When the temperature increased from 100 °C to 300 °C, two layers of kaolinite slipped away from each other, resulting in the transformation of inner-surface O–H groups into outer O–H groups. Thus, the temperature range of 100 to 300 °C was suggested for the heat treatment of kaolinite to decrease the content of inner-surface O–H groups; thereby, the amount of re-adsorption water was reduced. However, to thoroughly remove the re-adsorption water, a temperature higher than 650 °C should be used. Because two layers slipped away from each other, inner-surface O–H was transformed into outer O–H during heating from 100–300 °C. Re-adsorption water could be thoroughly removed at 650 °C.![]()
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Affiliation(s)
- Yanna Han
- College of Mining Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Zhuangzhuang Yan
- College of Mining Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Lijun Jin
- State Key Laboratory of Fine Chemicals
- Institute of Coal Chemical Engineering
- School of Chemical Engineering
- Dalian University of Technology
- Dalian 116024
| | - Junjie Liao
- State Key Laboratory Breeding Base of Coal Science and Technology Co-founded by Shanxi Province and the Ministry of Science and Technology
- Taiyuan University of Technology
- Taiyuan 030024
- China
| | - Guorui Feng
- College of Mining Engineering
- Taiyuan University of Technology
- Taiyuan 030024
- China
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de Mello LR, Hamley IW, Castelletto V, Garcia BBM, Han SW, de Oliveira CLP, da Silva ER. Nanoscopic Structure of Complexes Formed between DNA and the Cell-Penetrating Peptide Penetratin. J Phys Chem B 2019; 123:8861-8871. [DOI: 10.1021/acs.jpcb.9b05512] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Ian William Hamley
- Department of Chemistry, University of Reading, Reading RGD 6AD, United Kingdom
| | - Valeria Castelletto
- Department of Chemistry, University of Reading, Reading RGD 6AD, United Kingdom
| | | | - Sang Won Han
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo 04023-062, Brazil
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Schuchardt P, Unger M, Siesler HW. 2DCOS and PCMW2D analysis of FT-IR/ATR spectra measured at variable temperatures on-line to a polyurethane polymerization. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:478-482. [PMID: 28759848 DOI: 10.1016/j.saa.2017.07.044] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 07/19/2017] [Accepted: 07/22/2017] [Indexed: 06/07/2023]
Abstract
In the present communication the potential of 2DCOS analysis and the spin-off technique perturbation-correlation moving window 2D (PCMW2D) analysis is illustrated with reference to spectroscopic changes observed in a data set recorded by in-line fiber-coupled FT-IR spectroscopy in the attenuated total reflection (ATR) mode during a polyurethane solution polymerization at different temperatures. In view of the chemical functionalities involved, hydrogen bonding plays an important role in this polymerization reaction. Based on the 2DCOS and PCMW2D analysis, the sequence of hydrogen bonding changes accompanying the progress of polymerization and precipitation of solid polymer can be determined. Complementary to the kinetic data derived from the original variable-temperature spectra in a previous publication the results provide a more detailed picture of the investigated solution polymerization.
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Affiliation(s)
- Patrick Schuchardt
- Department of Physical Chemistry, University of Duisburg-Essen, Essen, Germany
| | - Miriam Unger
- Anasys Instruments, 325 Chapala Street, Santa Barbara, CA, USA
| | - Heinz W Siesler
- Department of Physical Chemistry, University of Duisburg-Essen, Essen, Germany.
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