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Tunable Nanostructure of TiO2/Reduced Graphene Oxide Composite for High Photocatalysis
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  • Journal title : Applied Microscopy
  • Volume 46, Issue 1,  2016, pp.37-44
  • Publisher : Korean Society of Electron Microscopy
  • DOI : 10.9729/AM.2016.46.1.37
 Title & Authors
Tunable Nanostructure of TiO2/Reduced Graphene Oxide Composite for High Photocatalysis
He, Di; Li, Yongli; Wang, Jinshu; Yang, Yilong; An, Qier;
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In this study /reduced graphene oxide () bipyramid with tunable nanostructure was fabricated by two-step solvothermal process and subsequent heat-treatment in air. The as-synthesized anatase nanocrystals possessed morphological bipyramid with exposed dominantly by (101) facets. Polyethylenimine was utilized during the combination of and graphene oxide (GO) to tune the surface charge, hindering the restack of graphene during solvothermal process and resulting in 1 to 5 layers of rGO wrapped on surface. After a further calcination, a portion of carbon quantum dots (CQDs) with a diameter about 2 nm were produced owing to the oxidizing and cutting of rGO on . The as-prepared hybrid showed a highly photocatalytic activity, which is about 3.2 and 7.7 times enhancement for photodegradation of methyl orange with compared to pure and P25, respectively. We assume that the improvement of photocatalysis is attributed to the chemical bonding between rGO/CQDs and that accelerates photogenerated electron-hole pair separation, as well as enhances light harvest.
;Graphene wrapping;Carbon quantum dots;Photodegradation;
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Investigations of Temperature Effect on the Conduction Mechanism of Electrical Conductivity of Copolymer/Carbon Black Composite, Applied Microscopy, 2017, 47, 3, 121  crossref(new windwow)
Allen M J, Tung V C, and Kaner R B (2009) Honeycomb carbon: a review of graphene. Chem. Rev. 110, 132-145.

Cao A, Liu Z, Chu S, Wu M, Ye Z, Cai Z, Chang Y L, Wang S F, Gong Q H, and Liu Y F (2010) A facile one-step method to produce graphene-CdS quantum dot nanocomposites as promising optoelectronic materials. Adv. Mater. 22, 103-106. crossref(new window)

Cargnello M, Gordon T R, and Murray C B (2014) Solution-phase synthesis of titanium dioxide nanoparticles and nanocrystals. Chem. Rev. 114, 9319-9345. crossref(new window)

Chen H, Nanayakkara C E, and Grassian V H (2012) Titanium dioxide photocatalysis in atmospheric chemistry. Chem. Rev. 112, 5919-5948. crossref(new window)

Dey R S, Hajra S, Sahu R K, Raj C R, and Panigrahi M K ( 2012) A rapid room temperature chemical route for the synthesis of graphene: metal-mediated reduction of graphene oxide. Chem. Commun. 48, 1787-1789. crossref(new window)

Fattakhova-Rohlfing D, Zaleska A, and Bein T (2014) Three-dimensional titanium dioxide nanomaterials. Chem. Rev. 114, 9487-9558. crossref(new window)

Jiang B J, Tian C G, Zhou W, Wang J Q, Xie Y, Pan Q J, Ren Z Y, Dong Y Z, Fu D, Han J L, and Fu H G (2011) In situ growth of $TiO_2$ in interlayers of expanded graphite for the fabrication of $TiO_2$-graphene with enhanced photocatalytic activity. Chem. Eur. J. 17, 8379-8387. crossref(new window)

K A J, Naduvath J, Mallick S, Shripathi T, Thankamoniamma M, and Philip R R (2015) A novel cost effective fabrication technique for highly preferential oriented $TiO_2$ nanotubes. Nanoscale 7, 20386-20390. crossref(new window)

Kim H I, Moon G H, Monllor-Satoca D, Park Y, and Choi W Y (2012) Solar photoconversion using graphene/$TiO_2$ composites: nanographene shell on $TiO_2$ core versus $TiO_2$ nanoparticles on graphene sheet. J. Phys. Chem. C 116, 1535-1543. crossref(new window)

Li Q, Guo B D, Yu J G, Ran J G, Zhang B H, Yan H J, and Gong J R (2011) Highlyeffi cient visible-light-driven photocatalytic hydrogen production of CdS-cluster-decorated graphene nanosheets. J. Am. Chem. Soc. 133, 10878-10884. crossref(new window)

Li W, Wang F, Feng S H, Wang J X, Sun Z K, Li B, Li Y H, Yang J P, Elzatahry A A, Xia Y Y, and Zhao D Y (2013) Sol-gel design strategy for ultradispersed $TiO_2$ nanoparticles on graphene for high-performance lithium ion batteries. J. Am. Chem. Soc. 135, 18300-18303. crossref(new window)

Li W, Wang F, Liu Y P, Wang J X, Yang J P, Zhang L J, Elzatahry A A, Al-Enizi A M, Xia Y Y, and Zhao D Y (2015b) General strategy to synthesize uniform mesoporous $TiO_2$/graphene/mesoporous $TiO_2$ sandwichlike nanosheets for highly reversible lithium storage. Nano Lett. 15, 2186-2193. crossref(new window)

Li Y L, Wang J S, Yang Y L, Zhang Y, He D, An Q E, and Cao G Z (2015a) Seed-induced growing various $TiO_2$ nanostructures on g-$C_3N_4$ nanosheets with much enhanced photocatalytic activity under visible light. J. Hazard. Mater. 292, 79-89. crossref(new window)

Liu Y, Che R C, Chen G, Fan J W, Sun Z K, Wu Z X, Wang M H, Li B, Wei J, Wei Y, Wang G, Guan G Z, Elzatahry A A, Bagabas A A, Al-Enizi A M, Deng Y H, Peng H S, and Zhao D Y (2015) Radially oriented mesoporous $TiO_2$ microspheres with single-crystal-like anatase walls for high-efficiency optoelectronic devices. Sci. Adv. 1, e1500166. crossref(new window)

Ma J, Qiang L, Tang X, and Li H (2010) A simple and rapid method to directly synthesize $TiO_2$/SBA-16 with different $TiO_2$ loading and its photocatalytic degradation performance on rhodamine B. Catal. Lett. 138, 88-95. crossref(new window)

Paredes J I, Villar-Rodil S, Solis-Fernandez P, Martinez-Alonso A, and Tascon J M D (2009) Atomic force and scanning tunneling microscopy imaging of graphene nanosheets derived from graphite oxide. Langmuir 25, 5957-5968. crossref(new window)

Qiu B C, Zhou Y, Ma Y F, Yang X L, Sheng W Q, Xing M Y, and Zhang J L (2015) Facile synthesis of the $Ti^{3+}$ self-doped $TiO_2$-graphene nanosheet composites with enhanced photocatalysis. Sci. Rep. 5, 1-6.

Tang Z H, Shen S L, Zhuang J, and Wang X (2010) Noble-metal-promoted three-dimensional macroassembly of single-layered graphene oxide. Angew. Chem. Int. Ed. 122, 4707-4711. crossref(new window)

Thakur S and Karak N (2012) Green reduction of graphene oxide by aqueous phytoextracts. Carbon 50, 5331-5339. crossref(new window)

Tu W G, Zhou Y, Liu Q, Yan S C, Bao S S, Wang X Y, Xiao M, and Zou Z G (2013) An in situ simultaneous reduction-hydrolysis technique for fabrication of $TiO_2$-graphene 2D sandwich-Like hybrid nanosheets: graphene-promoted selectivity of photocatalytic-driven hydrogenation and coupling of $CO_2$ into methane and ethane. Adv. Funct. Mater. 23, 1743-1749. crossref(new window)

Wang D H, Choi D, Li J, Yang Z G, Nie Z, Kou R, Hu D H, Wang C M, Saraf L V, Zhang J G, Aksay I A, and Liu J (2009) Self-assembled $TiO_2$-graphene hybrid nanostructures for enhanced li-Ion insertion. ACS Nano 3, 907-914. crossref(new window)

Wang L and Sasaki T (2014) Titanium oxide nanosheets: graphene analogues with versatile functionalities. Chem. Rev. 114, 9455-9486. crossref(new window)

Wang X D, Li Z D, Shi J, and Yu Y H (2014) One-dimensional titanium dioxide nanomaterials: nanowires, nanorods, and nanobelts. Chem. Rev. 114, 9346-9384. crossref(new window)

Wu H B, Hng H H, and Lou X W D (2012) Direct synthesis of anatase $TiO_2$ nanowires with enhanced photocatalytic activity. Adv. Mater. 24, 2567-2571. crossref(new window)

Xiu Z L, X P Hao, Wu Y Z, Lu Q F, and Liu S W (2015) Graphene-bonded and-encapsulated mesoporous $TiO_2$ microspheres as a highperformance anode material for lithium ion batteries. J. Power Sources 287, 334-340. crossref(new window)

Xu Y X, Sheng K X, Li C, and Shi G Q (2010) Self-assembled graphene hydrogel via a one-step hydrothermal process. ACS Nano 4, 4324-4330. crossref(new window)

Yang H G, Liu G, Qiao S Z, Sun C H, Jin Y G, Smith S C, Zou J, Cheng H M, and Lu G Q (2009) Solvothermal synthesis and photoreactivity of anatase $TiO_2$ nanosheets with dominant {001} facets. J. Am. Chem. Soc. 131, 4078-4083. crossref(new window)

Yang H G, Sun C H, Qiao S Z, Zou J, Liu G, Smith S C, Cheng H M, and Lu G Q (2008) Anatase $TiO_2$ single crystals with a large percentage of reactive facets. Nature 453, 638-641. crossref(new window)

Yu J G, Wang S H, Low J X, and Xiao W (2013) Enhanced photocatalytic performance of direct Z-scheme g-$C_3N_4$-$TiO_2$ photocatalysts for the decomposition of formaldehyde in air. Phys. Chem. Chem. Phys. 15, 16883-16890. crossref(new window)

Zhang H, Lv X J, Li Y M, Wang Y, and Li J H (2009) P25-graphene composite as a high performance photocatalyst. ACS nano 4, 380-386.

Zhang J, Xiong Z, and Zhao X S (2011) Graphene-metal-oxide composites for the degradation of dyes under visible light irradiation. J. Mater. Chem. 21, 3634-3640. crossref(new window)

Zhang X F, Zhang B Y, Huang D K, Yuan H L, Wang M K, and Shen Y (2014) $TiO_2$ nanotubes modified with electrochemically reduced graphene oxide for photoelectrochemical water splitting. Carbon 80, 591-598. crossref(new window)

Zhang Y P and Pan C X (2011) $TiO_2$/graphene composite from thermal reaction of graphene oxide and its photocatalytic activity in visible light. J. Mater. Sci. 46, 2622-2626. crossref(new window)

Zou L, Qiao Y, Wu X S, Ma C X, Lia X, and Li C M (2015) Synergistic effect of titanium dioxide nanocrystal/reduced graphene oxide hybrid on enhancement of microbial electrocatalysis. J. Power Sources 276, 208-214. crossref(new window)