1
|
Gómez-Díaz D, Domínguez-Ramos L, Malucelli G, Freire MS, González-Álvarez J, Lazzari M. S/N/O-Enriched Carbons from Polyacrylonitrile-Based Block Copolymers for Selective Separation of Gas Streams. Polymers (Basel) 2024; 16:269. [PMID: 38257068 PMCID: PMC10819996 DOI: 10.3390/polym16020269] [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: 12/24/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
A series of polyacrylonitrile (PAN)-based block copolymers with poly(methyl methacrylate) (PMMA) as sacrificial bock were synthesized by atom transfer radical polymerization and used as precursors for the synthesis of porous carbons. The carbons enriched with O- and S-containing groups, introduced by controlled oxidation and sulfuration, respectively, were characterized by Raman spectroscopy, scanning electron microscopy, and X-ray photoelectron spectrometry, and their surface textural properties were measured by a volumetric analyzer. We observed that the presence of sulfur tends to modify the structure of the carbons, from microporous to mesoporous, while the use of copolymers with a range of molar composition PAN/PMMA between 10/90 and 47/53 allows the obtainment of carbons with different degrees of porosity. The amount of sacrificial block only affects the morphology of carbons stabilized in oxygen, inducing their nanostructuration, but has no effect on their chemical composition. We also demonstrated their suitability for separating a typical N2/CO2 post-combustion stream.
Collapse
Affiliation(s)
- Diego Gómez-Díaz
- Departamento de Ingeniería Química, ETSE, Universidade de Santiago de Compostela, Rua Lope Gómez de Marzoa s/n, 15782 Santiago de Compostela, Spain; (L.D.-R.); (M.S.F.); (J.G.-Á.)
| | - Lidia Domínguez-Ramos
- Departamento de Ingeniería Química, ETSE, Universidade de Santiago de Compostela, Rua Lope Gómez de Marzoa s/n, 15782 Santiago de Compostela, Spain; (L.D.-R.); (M.S.F.); (J.G.-Á.)
- Departamento de Química Física, Facultade de Química, Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Giulio Malucelli
- Department of Applied Science and Technology, Politecnico di Torino, Viale Teresa Michel 5, 15121 Alessandria, Italy;
| | - María Sonia Freire
- Departamento de Ingeniería Química, ETSE, Universidade de Santiago de Compostela, Rua Lope Gómez de Marzoa s/n, 15782 Santiago de Compostela, Spain; (L.D.-R.); (M.S.F.); (J.G.-Á.)
| | - Julia González-Álvarez
- Departamento de Ingeniería Química, ETSE, Universidade de Santiago de Compostela, Rua Lope Gómez de Marzoa s/n, 15782 Santiago de Compostela, Spain; (L.D.-R.); (M.S.F.); (J.G.-Á.)
| | - Massimo Lazzari
- Departamento de Química Física, Facultade de Química, Universidade de Santiago de Compostela, Avenida das Ciencias s/n, 15782 Santiago de Compostela, Spain
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CiQUS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| |
Collapse
|
2
|
Zelenková G, Zelenka T, Almáši M, Soldánová M. Graphene as a promising additive to hierarchically porous carbon monoliths for enhanced H2 and CO2 sorption. J CO2 UTIL 2023. [DOI: 10.1016/j.jcou.2022.102371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
|
3
|
Wang L, Fan S, Li X, Tadé MO, Liu S. Rational Design of Carbon-Based Porous Aerogels with Nitrogen Defects and Dedicated Interfacial Structures toward Highly Efficient CO 2 Greenhouse Gas Capture and Separation. ACS OMEGA 2022; 7:40184-40194. [PMID: 36385835 PMCID: PMC9647782 DOI: 10.1021/acsomega.2c05072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
CO2 capture from flowing flue gases through adsorption technology is essential to reduce the emission of CO2 to the atmosphere. The rational design of highly efficient carbon-based absorbents with interfacial structures containing interconnected porous structures and abundant adsorption sites might be one of the promising strategies. Here, we report the synthesis of nitrogen-doped carbon aerogels (NCAs) via prepolymerized phenol-melamine-formaldehyde organic aerogels (PMF) by controlling the addition amount of ZnCl2 and the precursor M/P ratio. It has been revealed that NCAs with a higher specific surface area and interconnected porous structures contain a large amount of pyridinic nitrogen and pyrrolic nitrogen. These would act as the intrinsic adsorption sites for highly effective CO2 capture and further improve the CO2/N2 separation efficiencies. Among the prepared samples, NCA-1-2 with a high micropore surface area and high nitrogen content exhibits a high CO2 adsorption capacity (4.30 mmol g-1 at 0 °C and 1 bar) and CO2/N2 selectivity (36.5 at 25 °C, IAST). Under typical flue gas conditions (25 °C and 1.01 bar), equilibrium gas adsorption analysis and dynamic breakthrough measurement associated with a high adsorption capacity of 2.65 mmol g-1 at 25 °C and 1.01 bar and 0.81 mmol g-1 at 25 °C and 0.15 bar. This rationally designed N-doped carbon aerogel with specific interfacial structures and high CO2 adsorption capacity, high selectivity, and adsorption performance remained pretty stable after multiple uses.
Collapse
Affiliation(s)
- Liang Wang
- State
Key Laboratory of Fine Chemicals and Key Laboratory of Industrial
Ecology and Environmental Engineering, School of Environmental Science
& Technology, Dalian University of Technology, Dalian 116024, China
| | - Shiying Fan
- State
Key Laboratory of Fine Chemicals and Key Laboratory of Industrial
Ecology and Environmental Engineering, School of Environmental Science
& Technology, Dalian University of Technology, Dalian 116024, China
| | - Xinyong Li
- State
Key Laboratory of Fine Chemicals and Key Laboratory of Industrial
Ecology and Environmental Engineering, School of Environmental Science
& Technology, Dalian University of Technology, Dalian 116024, China
| | - Moses O. Tadé
- Department
of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| | - Shaomin Liu
- Department
of Chemical Engineering, Curtin University, GPO Box U1987, Perth, WA 6845, Australia
| |
Collapse
|
4
|
Wang YS, Zhang XJ, Ba YQ, Li TY, Hao GP, Lu AH. Recent Advances in Carbon-Based Adsorbents for Adsorptive Separation of Light Hydrocarbons. RESEARCH (WASHINGTON, D.C.) 2022; 2022:9780864. [PMID: 35935141 PMCID: PMC9275103 DOI: 10.34133/2022/9780864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/17/2022] [Indexed: 11/26/2022]
Abstract
Light hydrocarbons (LHs) separation is an important process in petrochemical industry. The current separation technology predominantly relies on cryogenic distillation, which results in considerable energy consumption. Adsorptive separation using porous solids has received widespread attention due to its lower energy footprint and higher efficiency. Thus, tremendous efforts have been devoted to the design and synthesis of high-performance porous solids. Among them, porous carbons display exceptional stability, tunable pore structure, and surface chemistry and thus represent a class of novel adsorbents upon achieving the matched pore structures for LHs separations. In this review, the modulation strategies toward advanced carbon-based adsorbents for LHs separation are firstly reviewed. Then, the relationships between separation performances and key structural parameters of carbon adsorbents are discussed by exemplifying specific separation cases. The research findings on the control of the pore structures as well as the quantification of the adsorption sites are highlighted. Finally, the challenges of carbonaceous adsorbents facing for LHs separation are given, which would motivate us to rationally design more efficient absorbents and separation processes in future.
Collapse
Affiliation(s)
- Yong-Sheng Wang
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xue-Jie Zhang
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Ya-Qi Ba
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Tian-Yi Li
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Guang-Ping Hao
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - An-Hui Lu
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| |
Collapse
|
5
|
Ran H, Yan W, Tan W, Hu Z, Huang C, Yang S, Yuan Z, Chen X, Li C, Xu Z, Jiang B. Preparation and performance for
CO
2
adsorption of large‐scale microporous fiber membrane based on electrostatic spinning technology. J Appl Polym Sci 2022. [DOI: 10.1002/app.52660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hongshun Ran
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Wuhan China
| | - Wenhui Yan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Wuhan China
| | - Wenze Tan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Wuhan China
| | - Zhixin Hu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Wuhan China
| | - Changxin Huang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Wuhan China
| | - Shigang Yang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Wuhan China
| | - Zixi Yuan
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Wuhan China
| | - Xueqin Chen
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education Hubei University Wuhan China
| | - Cao Li
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education Hubei University Wuhan China
| | - Ziqiang Xu
- Key Laboratory of Polymer Material in Hubei Hubei University Wuhan China
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education Hubei University Wuhan China
| | - Bingbing Jiang
- Key Laboratory of Polymer Material in Hubei Hubei University Wuhan China
- Key Laboratory of Green Preparation and Application for Functional Materials, Ministry of Education Hubei University Wuhan China
| |
Collapse
|
6
|
Li B, Wang S, Tian Z, Yao G, Li H, Chen L. Understanding the CO
2
/CH
4
/N
2
Separation Performance of Nanoporous Amorphous N‐Doped Carbon Combined Hybrid Monte Carlo with Machine Learning. ADVANCED THEORY AND SIMULATIONS 2021. [DOI: 10.1002/adts.202100378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Boran Li
- Beijing University of Chemical Technology Beijing 100029 China
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Song Wang
- Department of Chemistry University of California Riverside CA 92521 USA
| | - Ziqi Tian
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Ge Yao
- Nanjing University Nanjing China
| | - Hui Li
- Beijing University of Chemical Technology Beijing 100029 China
| | - Liang Chen
- Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo Zhejiang 315201 China
- University of Chinese Academy of Sciences Beijing 100049 China
| |
Collapse
|
7
|
Liu RS, Shi XD, Wang CT, Gao YZ, Xu S, Hao GP, Chen S, Lu AH. Advances in Post-Combustion CO 2 Capture by Physical Adsorption: From Materials Innovation to Separation Practice. CHEMSUSCHEM 2021; 14:1428-1471. [PMID: 33403787 DOI: 10.1002/cssc.202002677] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/19/2020] [Indexed: 06/12/2023]
Abstract
The atmospheric CO2 concentration continues a rapid increase to its current record high value of 416 ppm for the time being. It calls for advanced CO2 capture technologies. One of the attractive technologies is physical adsorption-based separation, which shows easy regeneration and high cycle stability, and thus reduced energy penalties and cost. The extensive research on this topic is evidenced by the growing body of scientific and technical literature. The progress spans from the innovation of novel porous adsorbents to practical separation practices. Major CO2 capture materials include the most widely used industrially relevant porous carbons, zeolites, activated alumina, mesoporous silica, and the newly emerging metal-organic frameworks (MOFs) and covalent-organic framework (COFs). The key intrinsic properties such as pore structure, surface chemistry, preferable adsorption sites, and other structural features that would affect CO2 capture capacity, selectivity, and recyclability are first discussed. The industrial relevant variables such as particle size of adsorbents, the mechanical strength, adsorption heat management, and other technological advances are equally important, even more crucial when scaling up from bench and pilot-scale to demonstration and commercial scale. Therefore, we aim to bring a full picture of the adsorption-based CO2 separation technologies, from adsorbent design, intrinsic property evaluation to performance assessment not only under ideal equilibrium conditions but also in realistic pressure swing adsorption processes.
Collapse
Affiliation(s)
- Ru-Shuai Liu
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Xiao-Dong Shi
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Cheng-Tong Wang
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Yu-Zhou Gao
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Shuang Xu
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Guang-Ping Hao
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Shaoyun Chen
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - An-Hui Lu
- State Key Laboratory of Fine Chemicals, Liaoning Key Laboratory for Catalytic Conversion Carbon Resources, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| |
Collapse
|
8
|
Wang S, Li Y, Dai S, Jiang D. Prediction by Convolutional Neural Networks of CO
2
/N
2
Selectivity in Porous Carbons from N
2
Adsorption Isotherm at 77 K. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005931] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Song Wang
- Department of Chemistry University of California Riverside CA 92521 USA
| | - Yi Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Sheng Dai
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
- Department of Chemistry The University of Tennessee Knoxville TN 37996 USA
| | - De‐en Jiang
- Department of Chemistry University of California Riverside CA 92521 USA
| |
Collapse
|
9
|
Wang S, Li Y, Dai S, Jiang D. Prediction by Convolutional Neural Networks of CO
2
/N
2
Selectivity in Porous Carbons from N
2
Adsorption Isotherm at 77 K. Angew Chem Int Ed Engl 2020; 59:19645-19648. [DOI: 10.1002/anie.202005931] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/01/2020] [Indexed: 01/07/2023]
Affiliation(s)
- Song Wang
- Department of Chemistry University of California Riverside CA 92521 USA
| | - Yi Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun Jilin 130012 China
| | - Sheng Dai
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
- Department of Chemistry The University of Tennessee Knoxville TN 37996 USA
| | - De‐en Jiang
- Department of Chemistry University of California Riverside CA 92521 USA
| |
Collapse
|
10
|
Yuan R, Yan Z, Shaga A, He H. Solvent-free mechanochemical synthesis of a carbazole-based porous organic polymer with high CO2 capture and separation. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2020.121327] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
11
|
Abstract
Carbon dioxide (CO2), a major greenhouse gas, capture has recently become a crucial technological solution to reduce atmospheric emissions from fossil fuel burning. Thereafter, many efforts have been put forwarded to reduce the burden on climate change by capturing and separating CO2, especially from larger power plants and from the air through the utilization of different technologies (e.g., membrane, absorption, microbial, cryogenic, chemical looping, and so on). Those technologies have often suffered from high operating costs and huge energy consumption. On the right side, physical process, such as adsorption, is a cost-effective process, which has been widely used to adsorb different contaminants, including CO2. Henceforth, this review covered the overall efficacies of CO2 adsorption from air at 196 K to 343 K and different pressures by the carbon-based materials (CBMs). Subsequently, we also addressed the associated challenges and future opportunities for CBMs. According to this review, the efficacies of various CBMs for CO2 adsorption have followed the order of carbon nanomaterials (i.e., graphene, graphene oxides, carbon nanotubes, and their composites) < mesoporous -microporous or hierarchical porous carbons < biochar and activated biochar < activated carbons.
Collapse
|
12
|
Zhao LY, Dong XL, Lu AH. Mechanochemical Synthesis of Porous Carbons and Their Applications in Catalysis. Chempluschem 2020; 85:866-875. [PMID: 32378808 DOI: 10.1002/cplu.202000191] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/28/2020] [Indexed: 11/08/2022]
Abstract
Porous carbons have shown considerable potential in catalysis as either as supports or metal-free catalysts. Various methods based on solution chemistry have been intensively developed for the preparation of porous carbon-based catalysts with controllable morphology, pore structure, surface chemical property as well as the desired active sites. Nowadays, mechanochemical synthesis, a re-emerging strategy, has become more and more popular in the synthesis of porous carbons, due to its feasibility and high synthetic efficiency under solvent-free condition. This Minireview presents recent advances in the mechanochemical synthesis of porous carbons by ball milling, and their applications in catalysis. It starts a brief introduction of the characteristics and work mechanism of ball milling, and then discuss the preparation of porous carbons as metal-free catalysts and carbon-supported metal catalysts. Finally, some issues and further opportunities for the mechanochemical synthesis of porous carbon-based catalysts are proposed and discussed.
Collapse
Affiliation(s)
- Li-Yuan Zhao
- State Key Laboratory of Fine Chemicals Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Xiao-Ling Dong
- State Key Laboratory of Fine Chemicals Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - An-Hui Lu
- State Key Laboratory of Fine Chemicals Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| |
Collapse
|
13
|
Zhao LY, Dong XL, Chen JY, Lu AH. A Mechanochemical-Assisted Synthesis of Boron, Nitrogen Co-Doped Porous Carbons as Metal-Free Catalysts. Chemistry 2020; 26:2041-2050. [PMID: 31785014 DOI: 10.1002/chem.201904381] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Indexed: 11/11/2022]
Abstract
A green and convenient solid-state method assisted by mechanical energy is employed for the synthesis of boron (B) and nitrogen (N) co-doped porous carbons (B,N-Cs). Glutamic acid (Glu) and boric acid (H3 BO3 ) are used as the N-containing carbon precursor and boron source, respectively. This method is easy to perform and proved to be efficient towards co-doping B and N into the carbon matrix with high contents of B (7 atom %) and N (10 atom %). By adjusting the molar ratio of H3 BO3 to Glu, the surface chemical states of B and N could be readily modulated. When increasing H3 BO3 dosage, the pore size of B,N-Cs could be tuned ranging from micropores to mesopores with a Brunauer-Emmett-Teller (BET) surface area up to 940 m2 g-1 . Finally, the B,N-Cs were applied as metal-free catalysts for the cycloaddition of CO2 to epoxides, which outperform the N-doped carbon catalyst (NC-900) and the physically mixed catalyst of NC-900/B4 C. The enhanced activity is attributed to the cooperative effect between B and N sites. X-ray photoelectron spectroscopy (XPS) analysis reveals that BN3 in the B,N-Cs serves as a critical active site for the cooperative catalysis.
Collapse
Affiliation(s)
- Li-Yuan Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian City, Liaoning Province, 116024, P.R. China
| | - Xiao-Ling Dong
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian City, Liaoning Province, 116024, P.R. China
| | - Jun-Yue Chen
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian City, Liaoning Province, 116024, P.R. China
| | - An-Hui Lu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Road, Ganjingzi District, Dalian City, Liaoning Province, 116024, P.R. China
| |
Collapse
|
14
|
Chiang YC, Wu CY, Chen YJ. Effects of activation on the properties of electrospun carbon nanofibers and their adsorption performance for carbon dioxide. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116040] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
15
|
Ma C, Liu X, Min J, Li J, Gong J, Wen X, Chen X, Tang T, Mijowska E. Sustainable recycling of waste polystyrene into hierarchical porous carbon nanosheets with potential applications in supercapacitors. NANOTECHNOLOGY 2020; 31:035402. [PMID: 31550696 DOI: 10.1088/1361-6528/ab475f] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Herein, polystyrene waste was carbonized into mesoporous carbon nanosheets (CNS) using the template method. The pore structure of the obtained CNS was further tuned by KOH activation, resulting in the formation of hierarchical porous carbon sheets with a specific surface area of 2650 m2 g-1 and a pore volume of 2.43 cm3 g-1. Benefiting from these unique properties, in a three electrode system, the hierarchical porous carbon sheets displayed a specific capacitance of 323 F g-1 at 0.5 A g-1 in a 6 M KOH electrolyte, good rate capability (222 F g-1 at 20 A g-1) and cycle stability (92.6% of capacitance retention after 10 000 cycles). More importantly, an energy density of 44.1 Wh kg-1 was also displayed with a power density of 757.1 W kg-1 in an organic electrolyte. In this regard, the present strategy demonstrates a facile approach for recycling plastic waste into high value-added products, which will potentially pave the way for the treatment of plastic waste in the future.
Collapse
Affiliation(s)
- Changde Ma
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China. University of Science and Technology of China, Hefei 230026, People's Republic of China
| | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Liu S, Sui ZY, Wang TX, Zhou HY, Liu YW, Han BH. Tuning Both Surface Chemistry and Porous Properties of Polymer-Derived Porous Carbons for High-Performance Gas Adsorption. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:7650-7658. [PMID: 31063388 DOI: 10.1021/acs.langmuir.9b00147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, we have prepared novel pyrrole-formaldehyde polymers through polymerizing pyrrole and formaldehyde in the mixture solvent of water and ethanol by using hydrochloric acid as a catalyst. The as-synthesized polymers possess a nitrogen content of 6.7 atom % and are composed of spherical particles with the diameter of approximately 1-3 μm. A series of nitrogen-doped porous carbons with high specific surface areas (680-2340 m2 g-1) were successfully obtained through the activation treatment of the polymer spheres. The porous properties and surface chemistry of the as-prepared porous carbons are tuned by choosing different activating agents and changing the activation temperature. The morphology, porous properties, and chemical composition of the obtained nitrogen-doped porous carbons are revealed by various characterization methods, such as scanning electron microscopy, nitrogen sorption measurement, and X-ray photoelectron spectroscopy. The as-prepared nitrogen-doped porous carbons as gas adsorbents display high carbon dioxide uptake capacities of 3.80-5.81 mmol g-1 at 273 K and 1.0 bar. They also show excellent carbon dioxide adsorption capacities (2.40-3.37 mmol g-1 at 1.0 bar) and good gas selectivities (CO2/N2 selectivities of 16.9-70.2) at 298 K.
Collapse
Affiliation(s)
- Shan Liu
- Department of Environment and Chemical Engineering , Yanshan University , Qinhuangdao 066004 , China
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , China
| | - Zhu-Yin Sui
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , China
| | - Tian-Xiong Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Hang-Yu Zhou
- Department of Environment and Chemical Engineering , Yanshan University , Qinhuangdao 066004 , China
| | - Yu-Wen Liu
- Department of Environment and Chemical Engineering , Yanshan University , Qinhuangdao 066004 , China
| | - Bao-Hang Han
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience , National Center for Nanoscience and Technology , Beijing 100190 , China
- University of Chinese Academy of Sciences , Beijing 100049 , China
| |
Collapse
|