메뉴 건너뛰기




Volumn 6, Issue 24, 2014, Pages 22297-22304

Tunable ternary (N, P, B)-doped porous nanocarbons and their catalytic properties for oxygen reduction reaction

Author keywords

boron; nanocarbon; nitrogen; oxygen reduction reaction; phosphorus; ternary doped

Indexed keywords

BORON; CARBON; CATALYSTS; DOPING (ADDITIVES); ELECTROLYTIC REDUCTION; NANOCARBON; NITROGEN; OXYGEN; PHOSPHORUS;

EID: 84919916858     PISSN: 19448244     EISSN: 19448252     Source Type: Journal    
DOI: 10.1021/am506284k     Document Type: Article
Times cited : (122)

References (44)
  • 1
    • 77958485184 scopus 로고    scopus 로고
    • Oxygen Reduction in Nanoporous Metal-Ionic Liquid Composite Electrocatalysts
    • Snyder, J.; Fujita, T.; Chen, M. W.; Erlebancher, J. Oxygen Reduction in Nanoporous Metal-Ionic Liquid Composite Electrocatalysts Nat. Mater. 2010, 9, 904-907
    • (2010) Nat. Mater. , vol.9 , pp. 904-907
    • Snyder, J.1    Fujita, T.2    Chen, M.W.3    Erlebancher, J.4
  • 2
    • 33645415225 scopus 로고    scopus 로고
    • Pd-Fe Nanoparticles as Electrocatalysts for Oxygen Reduction
    • Shao, M. H.; Sasaki, K.; Adzic, R. R. Pd-Fe Nanoparticles as Electrocatalysts for Oxygen Reduction J. Am. Chem. Soc. 2006, 128, 3526-3527
    • (2006) J. Am. Chem. Soc. , vol.128 , pp. 3526-3527
    • Shao, M.H.1    Sasaki, K.2    Adzic, R.R.3
  • 3
    • 84862637835 scopus 로고    scopus 로고
    • Combinatorial Search for Oxygen Reduction Reaction Electrocatalysts: A Review
    • Jeon, M. K.; Lee, C. H.; Park, G. I.; Kang, K. H. Combinatorial Search for Oxygen Reduction Reaction Electrocatalysts: A Review J. Power Sources 2012, 216, 400-408
    • (2012) J. Power Sources , vol.216 , pp. 400-408
    • Jeon, M.K.1    Lee, C.H.2    Park, G.I.3    Kang, K.H.4
  • 4
    • 84863289413 scopus 로고    scopus 로고
    • Highly Corrosion Resistant Platinum-Niobium Oxide-Carbon Nanotube Electrodes for the Oxygen Reduction in PEM Fuel Cells
    • Zhang, L.; Wang, L.; Holt, C. M. B.; Zahiri, B.; Li, Z.; Malek, K.; Navessin, T.; Eikerling, M. H.; Mitlin, D. Highly Corrosion Resistant Platinum-Niobium Oxide-Carbon Nanotube Electrodes for the Oxygen Reduction in PEM Fuel Cells Energy Environ. Sci. 2012, 5, 6156-6172
    • (2012) Energy Environ. Sci. , vol.5 , pp. 6156-6172
    • Zhang, L.1    Wang, L.2    Holt, C.M.B.3    Zahiri, B.4    Li, Z.5    Malek, K.6    Navessin, T.7    Eikerling, M.H.8    Mitlin, D.9
  • 6
    • 84876582731 scopus 로고    scopus 로고
    • Cobalt and Nitrogen-Cofunctionalized Graphene as a Durable Non-Precious Metal Catalyst with Enhanced ORR Activity
    • Jiang, S.; Zhu, C. Z.; Dong, S. J. Cobalt and Nitrogen-Cofunctionalized Graphene as a Durable Non-Precious Metal Catalyst with Enhanced ORR Activity J. Mater. Chem. A 2013, 1, 3593-3599
    • (2013) J. Mater. Chem. A , vol.1 , pp. 3593-3599
    • Jiang, S.1    Zhu, C.Z.2    Dong, S.J.3
  • 10
    • 84862776795 scopus 로고    scopus 로고
    • High-Performance Supercapacitor Electrodes Based on Highly Corrugated Graphene Sheets
    • Yan, J.; Liu, J. P.; Fan, Z. J.; Wei, T.; Zhang, L. J. High-Performance Supercapacitor Electrodes Based on Highly Corrugated Graphene Sheets Carbon 2012, 50, 2179-2188
    • (2012) Carbon , vol.50 , pp. 2179-2188
    • Yan, J.1    Liu, J.P.2    Fan, Z.J.3    Wei, T.4    Zhang, L.J.5
  • 11
    • 77956032548 scopus 로고    scopus 로고
    • Nitrogen-Doped Ordered Mesoporous Graphitic Arrays with High Electrocatalytic Activity for Oxygen Reduction
    • Liu, R. L.; Wu, D. Q.; Feng, X. L.; Müllen, K. Nitrogen-Doped Ordered Mesoporous Graphitic Arrays with High Electrocatalytic Activity for Oxygen Reduction Angew. Chem., Int. Ed. 2010, 122, 2619-2623
    • (2010) Angew. Chem., Int. Ed. , vol.122 , pp. 2619-2623
    • Liu, R.L.1    Wu, D.Q.2    Feng, X.L.3    Müllen, K.4
  • 12
    • 54849436200 scopus 로고    scopus 로고
    • Core/Shell Pt/C Nanoparticles Embedded in Mesoporous Carbon as a Methanol-Tolerant Cathode Catalyst in Direct Methanol Fuel Cells
    • Wen, Z. H.; Liu, J.; Li, J. H. Core/Shell Pt/C Nanoparticles Embedded in Mesoporous Carbon as a Methanol-Tolerant Cathode Catalyst in Direct Methanol Fuel Cells Adv. Mater. 2008, 20, 743-747
    • (2008) Adv. Mater. , vol.20 , pp. 743-747
    • Wen, Z.H.1    Liu, J.2    Li, J.H.3
  • 13
    • 84860356245 scopus 로고    scopus 로고
    • Graphitic Carbon Nitride Materials: Controllable Synthesis and Applications in Fuel Cells and Photocatalysis
    • Zheng, Y.; Liu, J.; Liang, J.; Jaroniecc, M.; Qiao, S. Z. Graphitic Carbon Nitride Materials: Controllable Synthesis and Applications in Fuel Cells and Photocatalysis Energy Environ. Sci. 2012, 5, 6717-6731
    • (2012) Energy Environ. Sci. , vol.5 , pp. 6717-6731
    • Zheng, Y.1    Liu, J.2    Liang, J.3    Jaroniecc, M.4    Qiao, S.Z.5
  • 15
    • 84855675522 scopus 로고    scopus 로고
    • Ordered Mesoporous Carbon Nitrides with Graphitic Frameworks as Metal-Free, Highly Durable, Methanol-Tolerant Oxygen Reduction Catalysts in an Acidic Medium
    • Kwon, K.; Sa, Y. J.; Cheon, J. Y.; Joo, S. H. Ordered Mesoporous Carbon Nitrides with Graphitic Frameworks as Metal-Free, Highly Durable, Methanol-Tolerant Oxygen Reduction Catalysts in an Acidic Medium Langmuir 2012, 28, 991-996
    • (2012) Langmuir , vol.28 , pp. 991-996
    • Kwon, K.1    Sa, Y.J.2    Cheon, J.Y.3    Joo, S.H.4
  • 16
    • 77951695110 scopus 로고    scopus 로고
    • Boron- and Fluorine-Containing Mesoporous Carbon Nitride Polymers: Metal-Free Catalysts for Cyclohexane Oxidation
    • Wang, Y.; Zhang, J. S.; Wang, X. C.; Antonietti, M.; Li, H. R. Boron- and Fluorine-Containing Mesoporous Carbon Nitride Polymers: Metal-Free Catalysts for Cyclohexane Oxidation Angew. Chem., Int. Ed. 2010, 49, 3356-3359
    • (2010) Angew. Chem., Int. Ed. , vol.49 , pp. 3356-3359
    • Wang, Y.1    Zhang, J.S.2    Wang, X.C.3    Antonietti, M.4    Li, H.R.5
  • 18
    • 78651380624 scopus 로고    scopus 로고
    • Efficient Metal-Free Oxygen Reduction in Alkaline Medium on High-Surface-Area Mesoporous Nitrogen-Doped Carbons Made from Ionic Liquids and Nucleobases
    • Yang, W.; Fellinger, T.-P.; Antonietti, M. Efficient Metal-Free Oxygen Reduction in Alkaline Medium on High-Surface-Area Mesoporous Nitrogen-Doped Carbons Made from Ionic Liquids and Nucleobases J. Am. Chem. Soc. 2011, 133, 206-209
    • (2011) J. Am. Chem. Soc. , vol.133 , pp. 206-209
    • Yang, W.1    Fellinger, T.-P.2    Antonietti, M.3
  • 19
    • 77956832031 scopus 로고    scopus 로고
    • In Search of the Active Site in Nitrogen-Doped Carbon Nanotube Electrodes for the Oxygen Reduction Reaction
    • Rao, C. V.; Cabrera, C. R.; Ishikawa, Y. In Search of the Active Site in Nitrogen-Doped Carbon Nanotube Electrodes for the Oxygen Reduction Reaction J. Phys. Chem. Lett. 2010, 1, 2622-2627
    • (2010) J. Phys. Chem. Lett. , vol.1 , pp. 2622-2627
    • Rao, C.V.1    Cabrera, C.R.2    Ishikawa, Y.3
  • 20
    • 77951727906 scopus 로고    scopus 로고
    • Nitrogen-Doped Graphene and Its Application in Electrochemical Biosensing
    • Wang, Y.; Shao, Y. Y.; Matson, D. W.; Li, J. H.; Lin, Y. H. Nitrogen-Doped Graphene and Its Application in Electrochemical Biosensing ACS Nano 2010, 4, 1790-1798
    • (2010) ACS Nano , vol.4 , pp. 1790-1798
    • Wang, Y.1    Shao, Y.Y.2    Matson, D.W.3    Li, J.H.4    Lin, Y.H.5
  • 21
    • 84876561736 scopus 로고    scopus 로고
    • B, N- and P, N-Doped Graphene as Highly Active Catalysts for Oxygen Reduction Reactions in Acidic Media
    • Choi, C. H.; Chung, M. W.; Kwon, H. C.; Parka, S. H.; Woo, S. I. B, N- and P, N-Doped Graphene as Highly Active Catalysts for Oxygen Reduction Reactions in Acidic Media J. Mater. Chem. A 2013, 1, 3694-3699
    • (2013) J. Mater. Chem. A , vol.1 , pp. 3694-3699
    • Choi, C.H.1    Chung, M.W.2    Kwon, H.C.3    Parka, S.H.4    Woo, S.I.5
  • 22
    • 84873805390 scopus 로고    scopus 로고
    • Can Boron and Nitrogen Co-doping Improve Oxygen Reduction Reaction Activity of Carbon Nanotubes?
    • Zhao, Y.; Yang, L. J.; Chen, S.; Wang, X. Z.; Ma, Y. W.; Wu, Q.; Jiang, Y. F.; Qian, W. J.; Hu, Z. Can Boron and Nitrogen Co-doping Improve Oxygen Reduction Reaction Activity of Carbon Nanotubes? J. Am. Chem. Soc. 2013, 135, 1201-1204
    • (2013) J. Am. Chem. Soc. , vol.135 , pp. 1201-1204
    • Zhao, Y.1    Yang, L.J.2    Chen, S.3    Wang, X.Z.4    Ma, Y.W.5    Wu, Q.6    Jiang, Y.F.7    Qian, W.J.8    Hu, Z.9
  • 23
    • 84880870941 scopus 로고    scopus 로고
    • Sulfur-Nitrogen Co-Doped Three-Dimensional Carbon Foams with Hierarchical Pore Structures as Efficient Metal-Free Electrocatalysts for Oxygen Reduction Reactions
    • Liu, Z.; Nie, H. G.; Yang, Z.; Zhang, J.; Jin, Z. P.; Lu, Y. Q.; Xiao, Z. B.; Huang, S. M. Sulfur-Nitrogen Co-Doped Three-Dimensional Carbon Foams with Hierarchical Pore Structures as Efficient Metal-Free Electrocatalysts for Oxygen Reduction Reactions Nanoscale 2013, 5, 3283-3288
    • (2013) Nanoscale , vol.5 , pp. 3283-3288
    • Liu, Z.1    Nie, H.G.2    Yang, Z.3    Zhang, J.4    Jin, Z.P.5    Lu, Y.Q.6    Xiao, Z.B.7    Huang, S.M.8
  • 24
    • 84880793623 scopus 로고    scopus 로고
    • Boron and Nitrogen Codoped Nanodiamond as an Efficient Metal-Free Catalyst for Oxygen Reduction Reaction
    • Liu, Y. M.; Chen, S.; Quan, X.; Yu, H. T.; Zhao, H. M.; Zhang, Y. B.; Chen, G. H. Boron and Nitrogen Codoped Nanodiamond as an Efficient Metal-Free Catalyst for Oxygen Reduction Reaction J. Phys. Chem. C 2013, 117, 14992-14998
    • (2013) J. Phys. Chem. C , vol.117 , pp. 14992-14998
    • Liu, Y.M.1    Chen, S.2    Quan, X.3    Yu, H.T.4    Zhao, H.M.5    Zhang, Y.B.6    Chen, G.H.7
  • 25
    • 84890539387 scopus 로고    scopus 로고
    • Sulfur- and Nitrogen-Doped, Ferrocene-Derived Mesoporous Carbons with Efficient Electrochemical Reduction of Oxygen
    • Xu, J. X.; Zhao, Y.; Shen, C.; Guan, L. H. Sulfur- and Nitrogen-Doped, Ferrocene-Derived Mesoporous Carbons with Efficient Electrochemical Reduction of Oxygen ACS Appl. Mater. Interfaces 2013, 5, 12594-12601
    • (2013) ACS Appl. Mater. Interfaces , vol.5 , pp. 12594-12601
    • Xu, J.X.1    Zhao, Y.2    Shen, C.3    Guan, L.H.4
  • 26
    • 77955356920 scopus 로고    scopus 로고
    • Graphite Oxide as a Photocatalyst for Hydrogen Production from Water
    • Yeh, T. F.; Syu, J. M.; Cheng, C.; Chang, T. H.; Teng, H. Graphite Oxide as a Photocatalyst for Hydrogen Production from Water Adv. Funct. Mater. 2010, 20, 2255-2262
    • (2010) Adv. Funct. Mater. , vol.20 , pp. 2255-2262
    • Yeh, T.F.1    Syu, J.M.2    Cheng, C.3    Chang, T.H.4    Teng, H.5
  • 27
    • 80053322220 scopus 로고    scopus 로고
    • 4 Layered Materials as Novel Efficient Visible Light Driven Photocatalysts
    • 4 Layered Materials as Novel Efficient Visible Light Driven Photocatalysts J. Mater. Chem. 2011, 21, 15171-15174
    • (2011) J. Mater. Chem. , vol.21 , pp. 15171-15174
    • Dong, F.1    Wu, L.2    Sun, Y.3    Fu, M.4    Wu, Z.5    Lee, S.C.6
  • 28
    • 84875287785 scopus 로고    scopus 로고
    • 4 as a Novel Metal-Macrocyclic Electrocatalyst for the Oxygen Reduction Reaction in Fuel Cells
    • 4 as a Novel Metal-Macrocyclic Electrocatalyst for the Oxygen Reduction Reaction in Fuel Cells Langmuir 2013, 29, 3821-3828
    • (2013) Langmuir , vol.29 , pp. 3821-3828
    • Liu, Q.1    Zhang, J.Y.2
  • 29
    • 79960178629 scopus 로고    scopus 로고
    • A New Reducing Agent to Prepare Single-Layer, High-Quality Reduced Grapheme Oxide for Device Applications
    • Mao, S.; Yu, K. H.; Cui, S. M.; Bo, Z.; Lu, G. H.; Chen, J. H. A New Reducing Agent to Prepare Single-Layer, High-Quality Reduced Grapheme Oxide for Device Applications Nanoscale 2011, 3, 2849-2853
    • (2011) Nanoscale , vol.3 , pp. 2849-2853
    • Mao, S.1    Yu, K.H.2    Cui, S.M.3    Bo, Z.4    Lu, G.H.5    Chen, J.H.6
  • 30
    • 84881396297 scopus 로고    scopus 로고
    • Phosphorus-Doped Graphene Nanosheets as Efficient Metal-Free Oxygen Reduction Electrocatalysts
    • Li, R.; Wei, Z. D.; Gou, X. L.; Xu, W. Phosphorus-Doped Graphene Nanosheets as Efficient Metal-Free Oxygen Reduction Electrocatalysts RSC Adv. 2013, 3, 9978-9984
    • (2013) RSC Adv. , vol.3 , pp. 9978-9984
    • Li, R.1    Wei, Z.D.2    Gou, X.L.3    Xu, W.4
  • 32
    • 54249084814 scopus 로고    scopus 로고
    • Nitrogen- and Boron-Doped Double-Walled Carbon Nanotubes
    • Panchakarla, L. S.; Govindaraj, A.; Rao, C. N. R. Nitrogen- and Boron-Doped Double-Walled Carbon Nanotubes ACS Nano 2007, 1, 494-500
    • (2007) ACS Nano , vol.1 , pp. 494-500
    • Panchakarla, L.S.1    Govindaraj, A.2    Rao, C.N.R.3
  • 33
    • 34447552365 scopus 로고    scopus 로고
    • Preparation and Oxygen Reduction Activity of BN-Doped Carbons
    • Ozaki, J.; Kimura, N.; Anahara, T.; Oya, A. Preparation and Oxygen Reduction Activity of BN-Doped Carbons Carbon 2007, 45, 1847-1853
    • (2007) Carbon , vol.45 , pp. 1847-1853
    • Ozaki, J.1    Kimura, N.2    Anahara, T.3    Oya, A.4
  • 34
    • 83455220227 scopus 로고    scopus 로고
    • Synthesis of Boron Doped Graphene for Oxygen Reduction Reaction in Fuel Cells
    • Sheng, Z. H.; Gao, H. L.; Bao, W. J.; Wang, F. B.; Xia, X. H. Synthesis of Boron Doped Graphene for Oxygen Reduction Reaction in Fuel Cells J. Mater. Chem. 2012, 22, 390-395
    • (2012) J. Mater. Chem. , vol.22 , pp. 390-395
    • Sheng, Z.H.1    Gao, H.L.2    Bao, W.J.3    Wang, F.B.4    Xia, X.H.5
  • 35
    • 34250664319 scopus 로고    scopus 로고
    • Effect of Phosphorus Content on Structural Properties of Phosphorus Incorporated Tetrahedral Amorphous Carbon Films
    • Han, J. C.; Liu, A. P.; Zhu, J. Q.; Tan, M. L.; Wu, H. P. Effect of Phosphorus Content on Structural Properties of Phosphorus Incorporated Tetrahedral Amorphous Carbon Films Appl. Phys. A: Mater. Sci. Process. 2007, 88, 341-345
    • (2007) Appl. Phys. A: Mater. Sci. Process. , vol.88 , pp. 341-345
    • Han, J.C.1    Liu, A.P.2    Zhu, J.Q.3    Tan, M.L.4    Wu, H.P.5
  • 36
    • 84867087682 scopus 로고    scopus 로고
    • Phosphorus-Doped Ordered Mesoporous Carbons with Different Lengths as Efficient Metal-Free Electrocatalysts for Oxygen Reduction Reaction in Alkaline Media
    • Yang, D. S.; Bhattacharjya, D.; Inamdar, S.; Park, J.; Yu, J. S. Phosphorus-Doped Ordered Mesoporous Carbons with Different Lengths as Efficient Metal-Free Electrocatalysts for Oxygen Reduction Reaction in Alkaline Media J. Am. Chem. Soc. 2012, 134, 16127-16130
    • (2012) J. Am. Chem. Soc. , vol.134 , pp. 16127-16130
    • Yang, D.S.1    Bhattacharjya, D.2    Inamdar, S.3    Park, J.4    Yu, J.S.5
  • 37
    • 82455192742 scopus 로고    scopus 로고
    • Vertically Aligned BCN Nanotubes as Efficient Metal-Free Electrocatalysts for the Oxygen Reduction Reaction: A Synergetic Effect by Co-Doping with Boron and Nitrogen
    • Wang, S. Y.; Iyyamperumal, E.; Roy, A.; Xue, Y. H.; Yu, D. S.; Dai, L. M. Vertically Aligned BCN Nanotubes as Efficient Metal-Free Electrocatalysts for the Oxygen Reduction Reaction: A Synergetic Effect by Co-Doping with Boron and Nitrogen Angew. Chem., Int. Ed. 2011, 50, 11756-11760
    • (2011) Angew. Chem., Int. Ed. , vol.50 , pp. 11756-11760
    • Wang, S.Y.1    Iyyamperumal, E.2    Roy, A.3    Xue, Y.H.4    Yu, D.S.5    Dai, L.M.6
  • 38
    • 84884535967 scopus 로고    scopus 로고
    • Doping Carbons beyond Nitrogen: An Overview of Advanced Heteroatom Doped Carbons with Boron, Sulphur and Phosphorus for Energy Applications
    • Paraknowitsch, J. P.; Thomas, A. Doping Carbons beyond Nitrogen: an Overview of Advanced Heteroatom Doped Carbons with Boron, Sulphur and Phosphorus for Energy Applications Energy Environ. Sci. 2013, 6, 2839-2855
    • (2013) Energy Environ. Sci. , vol.6 , pp. 2839-2855
    • Paraknowitsch, J.P.1    Thomas, A.2
  • 39
    • 84880788580 scopus 로고    scopus 로고
    • Two-Step Boron and Nitrogen Doping in Graphene for Enhanced Synergistic Catalysis
    • Zheng, Y.; Jiao, Y.; Ge, L.; Jaroniec, M.; Qiao, S. Z. Two-Step Boron and Nitrogen Doping in Graphene for Enhanced Synergistic Catalysis Angew. Chem., Int. Ed. 2013, 125, 3192-3198
    • (2013) Angew. Chem., Int. Ed. , vol.125 , pp. 3192-3198
    • Zheng, Y.1    Jiao, Y.2    Ge, L.3    Jaroniec, M.4    Qiao, S.Z.5
  • 40
    • 84867148156 scopus 로고    scopus 로고
    • Vertically Aligned Carbon Nanotube Arrays Co-doped with Phosphorus and Nitrogen as Efficient Metal-Free Electrocatalysts for Oxygen Reduction
    • Yu, D. S.; Xue, Y. H.; Dai, L. M. Vertically Aligned Carbon Nanotube Arrays Co-doped with Phosphorus and Nitrogen as Efficient Metal-Free Electrocatalysts for Oxygen Reduction J. Phys. Chem. Lett. 2012, 3, 2863-2870
    • (2012) J. Phys. Chem. Lett. , vol.3 , pp. 2863-2870
    • Yu, D.S.1    Xue, Y.H.2    Dai, L.M.3
  • 41
    • 84893059860 scopus 로고    scopus 로고
    • Heterogeneous Nanocarbon Materials for Oxygen Reduction Reaction
    • Wang, D. W.; Su, D. S. Heterogeneous Nanocarbon Materials for Oxygen Reduction Reaction Energy Environ. Sci. 2014, 7, 576-591
    • (2014) Energy Environ. Sci. , vol.7 , pp. 576-591
    • Wang, D.W.1    Su, D.S.2
  • 42
    • 84865589422 scopus 로고    scopus 로고
    • Binary and Ternary Doping of Nitrogen, Boron, and Phosphorus into Carbon for Enhancing Electrochemical Oxygen Reduction Activity
    • Choi, C. H.; Park, S. H.; Woo, S. I. Binary and Ternary Doping of Nitrogen, Boron, and Phosphorus into Carbon for Enhancing Electrochemical Oxygen Reduction Activity ACS Nano 2012, 6, 7084-7091
    • (2012) ACS Nano , vol.6 , pp. 7084-7091
    • Choi, C.H.1    Park, S.H.2    Woo, S.I.3
  • 44
    • 84868592668 scopus 로고    scopus 로고
    • Sulfur and Nitrogen Dual-Doped Mesoporous Graphene Electrocatalyst for Oxygen Reduction with Synergistically Enhanced Performance
    • Liang, J.; Jiao, Y.; Jaroniec, M.; Qiao, S. Z. Sulfur and Nitrogen Dual-Doped Mesoporous Graphene Electrocatalyst for Oxygen Reduction with Synergistically Enhanced Performance Angew. Chem., Int. Ed. 2012, 51, 11496-11500
    • (2012) Angew. Chem., Int. Ed. , vol.51 , pp. 11496-11500
    • Liang, J.1    Jiao, Y.2    Jaroniec, M.3    Qiao, S.Z.4


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.