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Journal of Materials Chemistry A
Page 6 of 8
ARTICLE
Journal Name
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Y. Xing, X. Zheng, Y. Wu, M. Li, W. H. Zhang and C. Li, Chem. Commun.,
(about < 3% in both electrolytes, Fig. 6 D). In addition, like other non-
precious metal catalyst, PPCN materials also revealed better
methanol tolerance. As testified by RDE polarization curves in
different electrolytes (shown in Fig. S19), there are no notable
changes in the ORR E1/2 and current density over PPCNs in the
presence of methanol (2 wt%).
2015, 51, 8146-8148.
DOI: 10.1039/C6TA00154H
W. Lu, M. Bosch, D. Yuan and H. C. Zhou, Chemsuschem, 2015, 8, 433-
438.
C. Zhu, Y. Wen, P. A. Van Aken, J. Maier and Y. Yu, Adv. Funct. Mater.,
2015, 25, 2335-2342.
Z. Y. Sui and B. H. Han, Carbon, 2015, 82, 590-598.
R. Andrews, D. Jacques, D. Qian and T. Rantell, Acc.Chem. Res., 2002,
35, 1008-1017.
Y. Zhu, S. Murali, W. Cai, X. Li, J. W. Suk, J. R. Potts and R. S. Ruoff, Adv.
Mater., 2010, 22, 3906-3924.
C. Liang, Z. Li and S. Dai, Angew. Chem. Int. Ed., 2008, 47, 3696-3717.
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4 Conclusions
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In summary, few-layer porphyrinic carbon nanosheets were
successfully prepared by a reactive “vanadium oxide-templating”
synthesis strategy. Vanadium oxides not only serve as hard templates
or supports but also provide a unique local environment for
producing such nanosheet materials. Thermal conversion of
porphyrins confined between the layers of V2O5 directly created the
few-layer Fe-N-C naonosheets with hierarchical porosity and highly
accessible surface. Active porphyrin-like Fe-N4 moieties for ORR are
shown to embed on the surface of such nanosheets with appropriate
9
10 Y. Zhai, Y. Dou, D. Zhao, P. F. Fulvio, R. T. Mayes and S. Dai, Adv. Mater.,
2011, 23, 4828-4850.
11 W. Li, D. Chen, Z. Li, Y. Shi, Y. Wan, G. Wang, Z. Jiang and D. Zhao,
Carbon, 2007, 45, 1757-1763.
12 X. Chen, Y.-S. Jun, K. Takanabe, K. Maeda, K. Domen, X. Fu, M.
Antonietti and X. Wang, Chem. Mater., 2009, 21, 4093-4095.
13 Y. Wang, A. Kong, X. Chen, Q. Lin and P. Feng, ACS Catal., 2015, 5,
3887-3893.
degree of graphitization. The integration of these desirable features 14 S. Xia, N. Daems, B. Geboes, M. Kurttepeli, S. Bals, T. Breugelmans, A.
Hubin, I. F. J. Vankelecom and P. P. Pescarmona, Appl. Catal. B
Environ., 2015, 176, 212-224.
15 M. Golshadi, J. Maita, D. Lanza, M. Zeiger, V. Presser and M. G. Schrlau
led to highly efficient ORR activity that is comparative (in alkaline
medium) or comparable to (in acidic medium) commercial Pt/C (20
wt%) catalysts. Furthermore, the second pyrolysis treatment are
effective in increasing the graphitization degree of PPCN and further
improving its activity and durability for ORR. This VOx-templated
synthesis method opens up a novel pathway for the preparation of
highly accessible carbon nanosheets with hierarchical porosity and
exceptional electrocatalytic performance. The obtained PPCN
materials represent the promising cathode catalysts for ORR in fuel
cell applications.
,
Carbon
, 2014, 80, 28-39.
16 H. Wang, X. Sun, Z. Liu and Z. Lei, Nanoscale, 2014,
6, 6577-6584.
17 S. Chen, J. Bi, Y. Zhao, L. Yang, C. Zhang, Y. Ma, Q. Wu, X. Wang and Z.
Hu, Adv. Mater., 2012, 24, 5593-5597.
18 T. Morishita, T. Tsumura, M. Toyoda, J. Przepiorski, A.W. Morawski,H.
Konno, M. Inagaki, Carbon, 2010, 48,2690-2707.
19 P. Mbuyisa, S. P. Bhardwaj, F. Rigoni, E. Carlino, S. Pagliara, L.
Sangaletti, A. Goldoni, M. Ndwandwe and C. Cepek, Carbon, 2012, 50
,
5472-5480.
20 K. S. Krishna, G. Vivekanandan, D. Ravinder and M. Eswaramoorthy,
Chem. Commun., 2010, 46, 2989-2991.
21 Z. Yang, Y. Xia, X. Sun and R. Mokaya, J. Phys. Chem. B, 2006, 110
Supporting Information. N2-sorption analyses, FT-IR, TEM,
XPS, AFM and SEM-EDS spectra for the precursors and different
PPCNs as well as the ORR activity and durability for different PPCNs
,
18424-18431.
22 W. Ding, Z. Wei, S. Chen, X. Qi, T. Yang, J. Hu, D. Wang, L.-J. Wan, S. F.
Alvi and L. Li, Angew. Chem., 2013, 125, 11971-11975.
23 Y. Shan, R. H. Huang and S. D. Huang, Angew. Chem. Int. Ed., 1999, 38
,
*Corresponding Author
1751-1755.
Aiguo Kong; School of Chemistry and Molecular Engineering, East
China Normal University, 500 Dongchuan Road, Shanghai 200241,
P.R.China, E-mail: agkong@ chem.ecnu.edu.cn.
24 A. Roy, M. Pradhan, C. Ray, R. Sahoo, S. Dutta and T. Pal,
CrystEngComm, 2014, 16, 7738-7744.
25 A. Kong, Y. J. Ding, P. Wang, H. Q. Zhang, F. Yang and Y. K. Shan, J. Solid
State Chem., 2011, 184, 331-336.
26 F. J. Quites, C. Bisio, R. d. C. G. Vinhas, R. Landers, L. Marchese and H.
O. Pastore, J. Col. Inter. Sci., 2012, 368, 462-469.
Pingyun Feng; Department of Chemistry, University of California,
Riverside, CA 92521, E-mail: pingyun.feng@ucr.edu.
Xianhui Bu; Department of Chemistry and Biochemistry, California
State University, Long Beach, CA 90840, E-mail:
27 M. Liu, R. Zhang and W. Chen, Chem. Rev., 2014, 114, 5117-5160.
28. G. Wu and P. Zelenay, Acc. Chem. Res., 2013, 46, 1878-1889.
29. X. Fu, Y. Liu, X. Cao, J. Jin, Q. Liu and J. Zhang, Appl. Catal. B: Envir.,
2013, 130–131, 143-151.
30. S. Kattel and G. Wang, J. Phys. Chem. Lett., 2014, 5, 452-456.
Acknowledgements
31. D. H. Lee, W. J. Lee, W. J. Lee, S. O. Kim and Y.-H. Kim, Phys. Rev. Lett.,
2011, 106, 175502.
This work is mainly supported by the U.S. Department of Energy,
Office of Basic Energy Sciences, Division of Materials Sciences and
Engineering under Award # DE-FG02-13ER46972 (Feng). Dr. Kong
thanks the financial support from China Scholarship Council, National
Natural Science Foundation (No. 21303058), Shanghai Municipal
Natural Science Foundation (No. 13ZR1412400 and 11JC1403400) to
Dr. Kong.
32. L. Wang, J. Yin, L. Zhao, C. Tian, P. Yu, J. Wang and H. Fu, Chem
Commun, 2013, 49, 3022-3024.
33. J. Yang, D.-J. Liu, N. N. Kariuki and L. X. Chen, Chem Commun, 2008,
329-331.
34. J. Zhang, Z. Wang and Z. Zhu, J. Power Sources, 2014, 255, 65-69.
35. A. Kong, B. Dong, X. Zhu, Y. Kong, J. Zhang and Y. Shan, Chem. Eur. J.,
2013, 19, 16170-16175.
36. H. Liu, Z. Shi, J. Zhang, L. Zhang and J. Zhang, J. Mater. Chem., 2009,
19, 468-470.
Notes and references
1
2
W. Qi and D. Su, ACS Catal., 2014, 4, 3212-3218.
H. Jin, H. Huang, Y. He, X. Feng, S. Wang, L. Dai and J. Wang, J. Am.
Chem. Soc., 2015,137,7588-7591.
37. T. Li, Y. Peng, K. Li, R. Zhang, L. Zheng, D. Xia and X. Zuo, J. Power
Sources, 2015, 293, 511–518.
6 | J. Name., 2012, 00, 1-3
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