具有三维网状结构的石墨相氮化碳/还原氧化石墨烯/钯复合材料的合成及可见光催化性能<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.020.001

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Abstract Graphitic carbon nitride (g-C₃N₄) has been considered as an efficient metal-free semiconductor photocataltyst. To further improve its photocatalytic activity, we have prepared the three-dimensional network-structured g-C₃N₄/reduced graphene oxi-de (rGO)/palladium nanoparticles (Pd NPs) composites by the pyrolysis-hydrothermal two-step method. The composite consists of ultrathin sheets which are decorated with Pd NPs (diameter:~10 nm). g-C₃N₄/rGO/Pd NPs composite shows a broad absorption with an edge at ~460 nm and then an enhanced photoabsorption with the increase of wavelength (460—800 nm). The photocatalytic activity of g-C₃N₄/rGO/Pd NPs composites was measured by the degradation of RhB solution. Under the irradiation of visible-light (λ>400 nm), g-C₃N₄/rGO/Pd NPs composites can degrade 90% RhB in 140 min. In addition, the cycling experiment demonstrates that the composite possesses good photocatalytic stability. Therefore, g-C₃N₄/rGO/Pd NPs composites displays a potential as an efficient and stable photocatalyst for water-purification application.

Key words： graphitic carbon nitride reduced graphene oxide palladium nanoparticles photocatalysis visible light

Published: 05 May 2018

CLC number:

TB321

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	Articles by authors
	LOU Dongdong
	ZHANG Lisha
	WANG Haifeng
	CHEN Zhigang

Cite this article:

LOU Dongdong,ZHANG Lisha,WANG Haifeng, et al. Synthesis of Three-dimensional Network-structured g-C₃N₄/rGO/Pd Composites with Excellent Visible-light Photocatalytic Performances[J]. Materials Reports, 2017, 31(20): 1-5.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.020.001 OR http://www.mater-rep.com/EN/Y2017/V31/I20/1

1 Xiang Q J, Yu J G, Jaroniec M. Graphene-based semiconductor photocatalysts [J]. Chem Soc Rev, 2012,41(2):782.
2 Wang P F, Zhan S H, Xia Y G, et al. The fundamental role and mechanism of reduced graphene oxide in rGO/Pt-TiO₂ nanocompo-site for high-performance photocatalytic water splitting [J]. Appl Catal B: Environ, 2017,207:335.
3 Du J, Lai X Y, Yang N L, et al. Hierarchically ordered macro-mesoporous TiO₂-graphene composite films: improved mass transfer, reduced charge recombination, and their enhanced photocatalytic activities [J]. ACS Nano, 2011,5:590.
4 Chen X Y, Zhou Y, Liu Q, et al. Ultrathin, single-crystal WO₃ nanosheets by two-dimensional oriented attachment toward enhanced photocatalystic reduction of CO₂ into hydrocarbon fuels under visible light [J]. ACS Appl Mater Interfaces, 2012,4(7):3372.
5 Tian C G, Zhang Q, Wu A P, et al. Cost-effective large-scale synthesis of ZnO photocatalyst with excellent performance for dye photodegradation [J]. Chem Commun, 2012,48(23):2858.
6 Xu Y, Zhao W W, Xu R, et al. Synthesis of ultrathin CdS nano-sheets as efficient visible-light-driven water splitting photocatalysts for hydrogen evolution [J]. Chem Commun, 2013,49(84):9803.
7 Wu T, Zhou X G, Zhang H, et al. Bi₂S₃ nanostructures: A new photocatalyst [J]. Nano Res, 2010,3(5):379.
8 Liu J H, Zhang T K, Wang Z C, et al. Simple pyrolysis of urea into graphitic carbon nitride with recyclable adsorption and photocatalytic activity [J]. J Mater Chem, 2011,21(38):14398.
9 Li S J, Zhang L S, Wang H L, et al. Ta₃N₅-Pt nonwoven cloth with hierarchical nanopores as efficient and easily recyclable macroscale photocatalysts [J]. Sci Rep, 2014,4:3978.
10Feng Xiping, Zhang Hong, Hang Zusheng. Peveloprment on photoeatalysis of g-C₃N₄ and modified g-C₃N₄[J]. J Funct Mater Devices, 2012,18(3):214(in Chinese).
冯西平, 张宏, 杭祖圣. g-C₃N₄及改性g-C₃N₄的光催化研究进展 [J]. 功能材料与器件学报, 2012,18(3):214.
11Wang X C, Maeda K, Thomas A, et al. A metal-free polymeric photocatalyst for hydrogen production from water under visible light [J]. Nat Mater, 2009,8(1):76.
12Ong W J, Tan L L, Ng Y H, et al. Graphitic carbon nitride (g-C₃N₄)-based photocatalysts for artificial photosynthesis and environmental remediation: Are we a step closer to achieving sustainability? [J]. Chem Soc Rev, 2016,116(12):7159.
13Cui Y J, Ding Z X, Fu X Z, et al. Construction of conjugated carbon nitride nanoarchitectures in solution at low temperatures for photoredox catalysis [J]. Angew Chem Int Ed, 2012,51(47):11814.
14Bai Y J, Lu B, Liu Z, et al. Solvothermal preparation of graphite-like C₃N₄nanocrystals [J]. J Cryst Growth, 2003,247(3-4):505.
15Zheng Y, Lin L H, Wang B, et al. Graphitic carbon nitride polymers toward sustainable photoredox catalysis [J]. Angew Chem Int Ed, 2015,54(44):12868.
16Surwade S P, Smirnov S N, Vlassiouk I V, et al. Water desalination using nanoporous single-layer graphene [J]. Nat Nanotechnol, 2015,10(5):459.
17Yu D S, Goh K, Wang H, et al. Scalable synthesis of hierarchically structured carbon nanotube-graphene fibres for capacitive energy storage [J]. Nat Nanotechnol, 2014,9(7):555.
18Zhang Y H, Tang Z R, Fu X Z, et al. TiO₂-graphene nanocompo-sites for gas-phase photocatalytic degradation of volatile aromatic pollutant: Is TiO₂-graphene truly different from other TiO₂-carbon composite materials? [J]. ACS Nano, 2010,4:7303.
19Gao E P, Wang W Z, Shang M, et al. Synthesis and enhanced photocatalytic performance of graphene-Bi₂WO₆ composite [J]. Phys Chem Chem Phys, 2011,13(7):2887.
20Zhang N, Yang M Q, Tang Z R, et al. CdS-graphene nanocompo-sites as visible light photocatalyst for redox reactions in water: A green route for selective transformation and environmental remediation [J]. J Catal, 2013,303(7):60.
21Xiang Q J, Yu J G, Jaroniec M. Preparation and ehanced visible-light photocatalytic H₂-production activity of graphene/C₃N₄ composites [J]. J Phys Chem C, 2011,115(15):7355.
22Shiraishi Y, Kofuji Y, Kanazawa S, et al. Platinum nanoparticles strongly associated with graphitic carbon nitride as efficient co-catalysts for photocatalytic hydrogen evolution under visible light [J]. Chem Commun, 2014,50(96):15255.
23Marschall R. Semiconductor composites: Strategies for enhancing charge carrier separation to improve photocatalytic activity [J]. Adv Funct Mater, 2014,24:2421.
24Xu Y X, Sheng K X, Li C, et al. Self-assembled graphene hydrogel via a one-step hydrothermal process [J]. ACS Nano, 2010,4:4324.
25Tong Z W, Yang D, Shi J F, et al. Three-dimensional porous aerogel constructed by g-C₃N₄ and graphene oxide nanosheets with excellent visible-light photocatalytic performance [J]. ACS Appl Mater Interfaces, 2015,7(46):25693.
26Tang Z H, Shen S L, Zhuang J, et al. Noble-metal-promoted three-dimensional macroassembly of single-layered graphene oxide [J]. Angew Chem Int Ed, 2010,49(27):4707.
27Nethravathi C, Rajamathi M. Chemically modified graphene sheets produced by the solvothermal reduction of colloidal dispersions of graphite oxide [J]. Carbon, 2008,46(14):1994.
28Chen Y, Tian G, Shi Y, et al. Hierarchical MoS₂/Bi₂MoO₆ composites with synergistic effect for enhanced visible photocatalytic activity [J]. Appl Catal B: Environ, 2015,164:40.
29Li X H, Antonietti M. Metal nanoparticles at mesoporous N-doped carbons and carbon nitrides: Functional Mott-Schottky heterojunctions for catalysis [J]. Chem Soc Rev, 2013,42(16):6593.