151
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Tiong P, Lintang HO, Endud S, Yuliati L. Improved interfacial charge transfer and visible light activity of reduced graphene oxide–graphitic carbon nitride photocatalysts. RSC Adv 2015. [DOI: 10.1039/c5ra17967j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
rGO–gCN composites, which were prepared by the in situ photoreduction of GO using bulk gCN as the photocatalyst, exhibited higher photocatalytic activity than bare gCN due to the improved interface charge transfer.
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Affiliation(s)
- Peggy Tiong
- Department of Chemistry
- Faculty of Science
- Universiti Teknologi Malaysia
- Malaysia
| | - Hendrik O. Lintang
- Centre for Sustainable Nanomaterials
- Ibnu Sina Institute for Scientific and Industrial Research
- Universiti Teknologi Malaysia
- Malaysia
| | - Salasiah Endud
- Department of Chemistry
- Faculty of Science
- Universiti Teknologi Malaysia
- Malaysia
| | - Leny Yuliati
- Centre for Sustainable Nanomaterials
- Ibnu Sina Institute for Scientific and Industrial Research
- Universiti Teknologi Malaysia
- Malaysia
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152
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Pan H, Zhu S, Lou X, Mao L, Lin J, Tian F, Zhang D. Graphene-based photocatalysts for oxygen evolution from water. RSC Adv 2015. [DOI: 10.1039/c4ra09546d] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Recent achievements of GR-based photocatalysts for oxygen evolution from water are summarized with perspectives on major challenges and opportunities.
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Affiliation(s)
- H. Pan
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- School of Materials Science and Engineering
- Shanghai 200240
- P R China
| | - S. Zhu
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- School of Materials Science and Engineering
- Shanghai 200240
- P R China
| | - X. Lou
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- School of Materials Science and Engineering
- Shanghai 200240
- P R China
| | - L. Mao
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- School of Materials Science and Engineering
- Shanghai 200240
- P R China
| | - J. Lin
- Shanghai Institute of Applied Physics Chines Academy of Sciences
- Chinese Academy of Sciences
- Shanghai 201204
- P R China
| | - F. Tian
- Shanghai Institute of Applied Physics Chines Academy of Sciences
- Chinese Academy of Sciences
- Shanghai 201204
- P R China
| | - D. Zhang
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- School of Materials Science and Engineering
- Shanghai 200240
- P R China
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153
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Yue Z, Chu D, Huang H, Huang J, Yang P, Du Y, Zhu M, Lu C. A novel heterogeneous hybrid by incorporation of Nb2O5 microspheres and reduced graphene oxide for photocatalytic H2 evolution under visible light irradiation. RSC Adv 2015. [DOI: 10.1039/c5ra05348j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel heterogeneous hybrid composed of Nb2O5 microspheres and reduced graphene oxide as photocatalyst exhibits superior photocatalytic activity and stability.
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Affiliation(s)
- Zongkuan Yue
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Dongmei Chu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Hui Huang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Jie Huang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Ping Yang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Yukou Du
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Mingshan Zhu
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| | - Cheng Lu
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
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154
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Influence of interconfigurational electronic States On Fe, Co, Ni-silicene materials selection for spintronics. Sci Rep 2014; 4:7594. [PMID: 25534484 PMCID: PMC4274514 DOI: 10.1038/srep07594] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2014] [Accepted: 12/02/2014] [Indexed: 11/23/2022] Open
Abstract
Growth through controlled adsorption of ferromagnetic elements such as Fe, Co and Ni on two-dimensional silicene provides an alternative route for silicon-based spintronics. Plane wave DFT calculations show that Fe, Co and Ni adatoms are strongly chemisorbed via strong sigma bonds, with adsorption energies (1.55 - 2.29 eV) that are two to six times greater compared to adsorption on graphene. All adatoms adsorb more strongly at the hole site than at the atom site, with Ni adsorbing strongest. Of the dimer configurations investigated, the hole – hole, b-atom – hole, vertically stacked at hole, vertically stacked at b-atom and bridge sites were found to be stable. The Co and Ni dimers are most stable when adsorbed in the hole-hole configuration while the Fe dimer is most stable when adsorbed in the atom-hole configuration. Metal-to-silicene and interconfigurational s-to-d electron transfer processes underpin the trends observed in adsorption energies and magnetic moments for both adatoms and dimers. Adsorption of these metals induces a small band gap at the Dirac Cone. In particular Co adatom adsorption at the hole site induces the largest spin-polarized band gaps of 0.70 eV (spin-up) and 0.28 eV (spin-down) making it a potential material candidate for spintronics applications.
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155
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Effect of the Degree of Photoreduction of Graphene Oxide on its Ability to Stabilize Graphite and Carbon Nanotubes in Aqueous Colloidal Solutions. THEOR EXP CHEM+ 2014. [DOI: 10.1007/s11237-014-9377-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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156
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Shown I, Hsu HC, Chang YC, Lin CH, Roy PK, Ganguly A, Wang CH, Chang JK, Wu CI, Chen LC, Chen KH. Highly efficient visible light photocatalytic reduction of CO2 to hydrocarbon fuels by Cu-nanoparticle decorated graphene oxide. NANO LETTERS 2014; 14:6097-103. [PMID: 25354234 DOI: 10.1021/nl503609v] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The production of renewable solar fuel through CO2 photoreduction, namely artificial photosynthesis, has gained tremendous attention in recent times due to the limited availability of fossil-fuel resources and global climate change caused by rising anthropogenic CO2 in the atmosphere. In this study, graphene oxide (GO) decorated with copper nanoparticles (Cu-NPs), hereafter referred to as Cu/GO, has been used to enhance photocatalytic CO2 reduction under visible-light. A rapid one-pot microwave process was used to prepare the Cu/GO hybrids with various Cu contents. The attributes of metallic copper nanoparticles (∼4-5 nm in size) in the GO hybrid are shown to significantly enhance the photocatalytic activity of GO, primarily through the suppression of electron-hole pair recombination, further reduction of GO's bandgap, and modification of its work function. X-ray photoemission spectroscopy studies indicate a charge transfer from GO to Cu. A strong interaction is observed between the metal content of the Cu/GO hybrids and the rates of formation and selectivity of the products. A factor of greater than 60 times enhancement in CO2 to fuel catalytic efficiency has been demonstrated using Cu/GO-2 (10 wt % Cu) compared with that using pristine GO.
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Affiliation(s)
- Indrajit Shown
- Institute of Atomic and Molecular Sciences, Academia Sinica , Taipei 10617, Taiwan
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157
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Skaltsas T, Karousis N, Pispas S, Tagmatarchis N. Photocatalytic applications with CdS • block copolymer/exfoliated graphene nanoensembles: hydrogen generation and degradation of Rhodamine B. NANOTECHNOLOGY 2014; 25:445404. [PMID: 25325759 DOI: 10.1088/0957-4484/25/44/445404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Amphiphilic block copolymer poly(isoprene-b-acrylic acid) (PI-b-PAA) was used to stabilize exfoliated graphene in water, allowing the immobilization of semiconductor CdS nanoparticles forming CdS • PI-b-PAA/graphene. Characterization using high-resolution transmission electron microscopy and energy-dispersive x-ray spectroscopy proved the success of the preparation method and revealed the presence of spherical CdS. Moreover, UV-Vis and photoluminescence assays suggested that electronic interactions within CdS • PI-b-PAA/graphene exist as evidenced by the significant quenching of the characteristic emission of CdS by exfoliated graphene. Photoillumination of CdS • PI-b-PAA/graphene, in the presence of ammonium formate as a quencher for the photogenerated holes, resulted in the generation of hydrogen by water splitting, monitored by the reduction of 4-nitroaniline to benzene-1,4-diamine (>80 ± 4% at 20 min; 100% at 24 min), much faster and more efficient compared to when reference CdS • PI-b-PAA was used as the photocatalyst (<30 ± 3% at 20 min; 100% at 240 min). Moreover, Rhodamine B was photocatalytically degraded by CdS • PI-b-PAA/graphene, with fast kinetics under visible light illumination in the presence of air. The enhancement of both photocatalytic processes by CdS • PI-b-PAA/graphene was rationalized in terms of effective separation of holes and electrons, contrary to reference CdS • PI-b-PAA, in which rapid recombination of the hole-electron pair is inevitable due to the absence of exfoliated graphene as a suitable electron acceptor.
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Affiliation(s)
- T Skaltsas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
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158
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Islam SM, Roy AS, Dey RC, Paul S. Graphene based material as a base catalyst for solvent free Aldol condensation and Knoevenagel reaction at room temperature. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.06.038] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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159
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Zhang Y, Zhou Z, Chen T, Wang H, Lu W. Graphene TiO2 nanocomposites with high photocatalytic activity for the degradation of sodium pentachlorophenol. J Environ Sci (China) 2014; 26:2114-2122. [PMID: 25288556 DOI: 10.1016/j.jes.2014.08.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 03/26/2014] [Accepted: 03/28/2014] [Indexed: 06/03/2023]
Abstract
A series of graphene-TiO2 photocatalysts was synthesized by doping TiO2 with graphene oxide via hydrothermal treatment. The photocatalytic capability of the catalysts under ultraviolet irradiation was evaluated in terms of sodium pentachlorophenol (PCP-Na) decomposition and mineralization. The structural and physicochemical properties of these nanocomposites were characterized by X-ray diffraction, N2 adsorption-desorption, transmission electron microscopy, scanning electron microscopy, Ultraviolet-visible diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, electron paramagnetic resonance spectra, and Fourier-transform infrared spectroscopy. The graphene-TiO2 nanocomposites exhibited higher photocatalytic efficiency than commercial P25 for the degradation of PCP-Na, and 63.4% to 82.9% of the total organic carbon was fully mineralized. The improved photocatalytic activity may be attributed to the accelerated interfacial electron-transfer process and the significantly prolonged lifetime of electron-hole pairs imparted by graphene sheets in the nanocomposites. However, excessive graphene and the inhomogeneous aggregation of TiO2 nanoparticles may decrease photodegradation efficiency.
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Affiliation(s)
- Yaxin Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; School of Environment, Tsinghua University, Beijing 100084, China.
| | - Zeyu Zhou
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Tan Chen
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Hongtao Wang
- School of Environment, Tsinghua University, Beijing 100084, China.
| | - Wenjing Lu
- School of Environment, Tsinghua University, Beijing 100084, China
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160
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Yang MQ, Zhang N, Pagliaro M, Xu YJ. Artificial photosynthesis over graphene-semiconductor composites. Are we getting better? Chem Soc Rev 2014; 43:8240-54. [PMID: 25200332 DOI: 10.1039/c4cs00213j] [Citation(s) in RCA: 261] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Tremendous interest is devoted to fabricating numerous graphene (GR)-semiconductor composites toward improved conversion of solar energy, resulting from the observation that the photogenerated electrons from semiconductors (e.g., TiO2, CdS) can be readily accepted or shuttled in the two-dimensional (2D) GR sheet. Yet although the hunt is on for GR-semiconductor composite based photoredox applications that aim to exploit the remarkable electronic conductivity of GR, the work necessary to find out how it could best be harnessed to improve the photocatalytic performance of semiconductors remains scanty. In this review, we highlight a few problems associated with improving the photocatalytic performance of semiconductors via methodological coupling with GR. In particular, we address strategies for harnessing the structure and electronic conductivity of GR via strengthening the interfacial contact, optimizing the electronic conductivity of GR, and spatially optimizing the interfacial charge carrier transfer efficiency. Additionally, we provide a brief overview of assembly methods for fabricating GR-semiconductor composites with controllable film infrastructure to meet the requirements of practical photocatalytic applications. Finally, we propose that, only with the principle of designing and understanding GR-semiconductor composites from a system-level consideration, we might get better at imparting the power of GR with unique and transformative properties into the composite system.
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Affiliation(s)
- Min-Quan Yang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, P. R. China
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161
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Karaush NN, Baryshnikov GV, Minaev BF. DFT characterization of a new possible graphene allotrope. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.08.025] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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162
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Bi7O9I3/reduced graphene oxide composite as an efficient visible-light-driven photocatalyst for degradation of organic contaminants. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcata.2014.04.029] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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163
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Graphene Oxide Composites with Silver Nanoparticles: Photochemical Formation and Electrocatalytic Activity in the Oxidation of Methanol and Formaldehyde. THEOR EXP CHEM+ 2014. [DOI: 10.1007/s11237-014-9359-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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164
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Liu Y. Hydrothermal synthesis of TiO2–RGO composites and their improved photocatalytic activity in visible light. RSC Adv 2014. [DOI: 10.1039/c4ra06342b] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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165
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Synthesis of nanotitania decorated few-layer graphene for enhanced visible light driven photocatalysis. J Colloid Interface Sci 2014; 428:214-21. [DOI: 10.1016/j.jcis.2014.04.054] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 04/11/2014] [Accepted: 04/25/2014] [Indexed: 11/20/2022]
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166
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Jin C, Cui X, Tian H, Wang X, Sun C, Zheng W. Photo-less catalysis of TiO2-reduced graphene oxides. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.06.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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167
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Li X, Kang M, Han X, Wang J, Xu P. Enhanced Photocatalytic Activity of Titanium Dioxide: Modification with Graphene Oxide and Reduced Graphene Oxide. CHEM LETT 2014. [DOI: 10.1246/cl.140063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Xuandong Li
- Department of Chemistry, Harbin Institute of Technology
| | - Meirong Kang
- Department of Chemistry, Harbin Institute of Technology
| | - Xijiang Han
- Department of Chemistry, Harbin Institute of Technology
| | - Jingyu Wang
- Department of Chemistry, Harbin Institute of Technology
| | - Ping Xu
- Department of Chemistry, Harbin Institute of Technology
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168
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Zhao Y, Wei X, Wang Y, Luo F. One-pot twelve tungsten phosphate acid assisted electrochemical synthesis of WO3-decorated graphene sheets for high-efficiency UV-light-driven photocatalysis. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.05.043] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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169
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Yang MQ, Xu YJ. Selective photoredox using graphene-based composite photocatalysts. Phys Chem Chem Phys 2014; 15:19102-18. [PMID: 24121632 DOI: 10.1039/c3cp53325e] [Citation(s) in RCA: 283] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Graphene (GR) has proven to be a promising candidate to construct effective GR-based composite photocatalysts with enhanced catalytic activities for solar energy conversion. During the past few years, various GR-based composite photocatalysts have been developed and applied in a myriad of fields. In this perspective review, compared with the traditional applications of GR-based nanocomposites for the "non-selective" degradation of pollutants, photo-deactivation of bacteria and water splitting to H2 and O2, we mainly focus on the recent progress in the applications of GR-based composite photocatalysts for "selective" organic transformations, including reduction of CO2 to renewable fuels, reduction of nitroaromatic compounds to amino compounds, oxidation of alcohols to aldehydes and acids, epoxidation of alkenes, hydroxylation of phenol, and oxidation of tertiary amines. The different roles of GR in these GR-based nanocomposite photocatalysts such as providing a photoelectron reservoir and performing as an organic dye-like macromolecular photosensitizer have been summarized. In addition, graphene oxide (GO) as a co-catalyst in GO-organic species photocatalysts and GO itself as a photocatalyst for selective reduction of CO2 have also been demonstrated. Finally, perspectives on the future research direction of GR-based composite photocatalysts toward selective organic redox transformations are discussed and it is clear that there is a wide scope of opportunities awaiting us in this promising research field.
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Affiliation(s)
- Min-Quan Yang
- State Key Laboratory Breeding Base of Photocatalysis, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou, 350002, P. R. China.
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170
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Chan DKL, Cheung PL, Yu JC. A visible-light-driven composite photocatalyst of TiO2 nanotube arrays and graphene quantum dots. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:689-95. [PMID: 24991506 PMCID: PMC4077368 DOI: 10.3762/bjnano.5.81] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 04/25/2014] [Indexed: 05/23/2023]
Abstract
TiO2 nanotube arrays are well-known efficient UV-driven photocatalysts. The incorporation of graphene quantum dots could extend the photo-response of the nanotubes to the visible-light range. Graphene quantum dot-sensitized TiO2 nanotube arrays were synthesized by covalently coupling these two materials. The product was characterized by Fourier-transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and UV-vis absorption spectroscopy. The product exhibited high photocatalytic performance in the photodegradation of methylene blue and enhanced photocurrent under visible light irradiation.
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Affiliation(s)
- Donald K L Chan
- Department of Chemistry and Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Po Ling Cheung
- Department of Chemistry and Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Jimmy C Yu
- Department of Chemistry and Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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171
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Weng B, Wu J, Zhang N, Xu YJ. Observing the role of graphene in boosting the two-electron reduction of oxygen in graphene-WO₃ nanorod photocatalysts. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:5574-5584. [PMID: 24761800 DOI: 10.1021/la4048566] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The new role of graphene (GR) in boosting the two-electron reduction of O2 to H2O2 has been first identified in the GR-WO3 nanorod (NR) nanocomposite photocatalysts, which are fabricated by a facile, solid electrostatic self-assembly strategy to integrate the positively charged branched poly(ethylenimine) (BPEI)-GR (BGR) and negatively charged WO3 NRs at room temperature. Photoactivity test shows that, as compared to WO3 NRs, BGR-WO3 NRs with an appropriate addition ratio of GR exhibit remarkably enhanced and stable visible-light photoactivity toward the degradation of Rhodamine B. Besides the common roles of GR observed in the GR-based composite photocatalysts in the literature, including enhancing the visible-light absorption intensity, improving the lifetime and transfer of photogenerated charge carriers, and increasing the adsorption capacity for reactants, we have observed the new role of GR in boosting the two-electron reduction of O2 to H2O2 in this specific BGR-WO3 NR photocatalyst system. Importantly, this new role of GR does contribute to the overall photoactivity enhancement of BGR-WO3 NR nanocomposites. The synergistic contribution of GR on improving the photoactivity of WO3 NRs and the underlying reaction mechanism have been analyzed by the structure-photoactivity correlation analysis and controlled experiments using radicals scavengers.
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Affiliation(s)
- Bo Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University , Fuzhou 350002, PR China
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172
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Chai B, Li J, Xu Q. Reduced Graphene Oxide Grafted Ag3PO4 Composites with Efficient Photocatalytic Activity under Visible-Light Irradiation. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4041065] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bo Chai
- School of Chemical and Environmental
Engineering, Wuhan Polytechnic University, Wuhan 430023, P. R. China
| | - Jing Li
- School of Chemical and Environmental
Engineering, Wuhan Polytechnic University, Wuhan 430023, P. R. China
| | - Qian Xu
- School of Chemical and Environmental
Engineering, Wuhan Polytechnic University, Wuhan 430023, P. R. China
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173
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Liang S, Yi M, Shen Z, Liu L, Zhang X, Ma S. One-step green synthesis of graphene nanomesh by fluid-based method. RSC Adv 2014. [DOI: 10.1039/c4ra01250j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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174
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Yang L, Zhou H, Fan T, Zhang D. Semiconductor photocatalysts for water oxidation: current status and challenges. Phys Chem Chem Phys 2014; 16:6810-26. [PMID: 24599528 DOI: 10.1039/c4cp00246f] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Artificial photosynthesis is a highly-promising strategy to convert solar energy into hydrogen energy for the relief of the global energy crisis. Water oxidation is the bottleneck for its kinetic and energetic complexity in the further enhancement of the overall efficiency of the artificial photosystem. Developing efficient and cost-effective photocatalysts for water oxidation is a growing desire, and semiconductor photocatalysts have recently attracted more attention due to their stability and simplicity. This article reviews the recent advancement of semiconductor photocatalysts with a focus on the relationship between material optimization and water oxidation efficiency. A brief introduction to artificial photosynthesis and water oxidation is given first, followed by an explanation of the basic rules and mechanisms of semiconductor particulate photocatalysts for water oxidation as theoretical references for discussions of componential, surface structure, and crystal structure modification. O2-evolving photocatalysts in Z-scheme systems are also introduced to demonstrate practical applications of water oxidation photocatalysts in artificial photosystems. The final part proposes some challenges based on the dynamics and energetics of photoholes which are fundamental to the enhancement of water oxidation efficiency, as well as on the simulation of natural water oxidation that will be a trend in future research.
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Affiliation(s)
- Lingling Yang
- State Key Lab of Metal Matrix Composites, Shanghai Jiaotong University, Shanghai 200240, P.R. China.
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175
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Liu H, Su Y, Chen Z, Jin Z, Wang Y. Graphene sheets grafted three-dimensional BiOBr0.2I0.8 microspheres with excellent photocatalytic activity under visible light. JOURNAL OF HAZARDOUS MATERIALS 2014; 266:75-83. [PMID: 24374567 DOI: 10.1016/j.jhazmat.2013.12.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 12/06/2013] [Accepted: 12/10/2013] [Indexed: 05/21/2023]
Abstract
A series of graphene sheets grafted three-dimensional BiOBr0.2I0.8 microspheres with different graphene contents have been synthesized by a simple one-step solvothermal method. The BiOBr0.2I0.8 microspheres were composed of numerous nanoplates with a thickness of about 10nm and dispersed uniformly on the surface of graphene. The assembled BiOBr0.2I0.8/graphene composites exhibited excellent photocatalytic activity in the degradation of rhodamine B (RhB) and phenol under visible light irradiation (λ>420 nm). The optimal graphene content was found to be 10.0 wt.%, and the corresponding photocatalytic activity in degradation of RhB and phenol was 3.19 and 3.27 times that of pure BiOBr0.2I0.8, respectively. The enhanced photocatalytic activity could be attributed to more effective charge transportations and separations, larger specific surface areas and the increased light absorption. A possible photocatalytic mechanism of the BiOBr0.2I0.8/graphene composites was also proposed.
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Affiliation(s)
- Hong Liu
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China.
| | - Yun Su
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China
| | - Zhen Chen
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China
| | - Zhitong Jin
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China
| | - Yong Wang
- Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, PR China.
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176
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Hong N, Song L, Wang B, Yuan B, Shi Y, Hu Y. Fabrication of graphene supported carbon-coating cobalt and carbon nanoshells for adsorption of toxic gases and smoke. J Appl Polym Sci 2014. [DOI: 10.1002/app.40457] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ningning Hong
- State Key Laboratory of Fire Science; University of Science and Technology of China; Hefei Anhui 230026 People's Republic of China
| | - Lei Song
- State Key Laboratory of Fire Science; University of Science and Technology of China; Hefei Anhui 230026 People's Republic of China
| | - Bibo Wang
- State Key Laboratory of Fire Science; University of Science and Technology of China; Hefei Anhui 230026 People's Republic of China
| | - Bibe Yuan
- State Key Laboratory of Fire Science; University of Science and Technology of China; Hefei Anhui 230026 People's Republic of China
| | - Yongqian Shi
- State Key Laboratory of Fire Science; University of Science and Technology of China; Hefei Anhui 230026 People's Republic of China
| | - Yuan Hu
- State Key Laboratory of Fire Science; University of Science and Technology of China; Hefei Anhui 230026 People's Republic of China
- Suzhou Key Laboratory of Urban Public Safety; Suzhou Institute of University of Science and Technology of China; Suzhou People's Republic of China
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177
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Lavorato C, Primo A, Molinari R, García H. Natural Alginate as a Graphene Precursor and Template in the Synthesis of Nanoparticulate Ceria/Graphene Water Oxidation Photocatalysts. ACS Catal 2014. [DOI: 10.1021/cs401068m] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Cristina Lavorato
- Department
of Environmental and Chemical Engineering, University of Calabria, Via P. Bucci 44A, 87036 Rende, CS, Italy
| | - Ana Primo
- Instituto
Universitario de Tecnología Química, Universitat Politècnica de València, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Raffaele Molinari
- Department
of Environmental and Chemical Engineering, University of Calabria, Via P. Bucci 44A, 87036 Rende, CS, Italy
| | - Hermenegildo García
- Instituto
Universitario de Tecnología Química, Universitat Politècnica de València, Av. de los Naranjos s/n, 46022 Valencia, Spain
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178
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Longlong T, Xin Z, Wei Q, Dan L, Qiang J, Jin L, Yuanlv Y, Zhan L, Wangsuo W. The adsorption of water-soluble ionic liquids on graphene oxide of different oxygen content. RSC Adv 2014. [DOI: 10.1039/c4ra09422k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work may advance the understanding of the adsorption behavior of ILs on graphene oxide and find a possible way to remove ILs in the environmental systems.
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Affiliation(s)
- Tian Longlong
- Radiochemical Laboratory
- Lanzhou University
- Lanzhou, China
| | - Zhang Xin
- Institute of Modern Physics
- Chinese Academy of Sciences
- Lanzhou, China
| | - Qi Wei
- Radiochemical Laboratory
- Lanzhou University
- Lanzhou, China
| | - Liu Dan
- Radiochemical Laboratory
- Lanzhou University
- Lanzhou, China
| | - Jin Qiang
- Radiochemical Laboratory
- Lanzhou University
- Lanzhou, China
| | - Lin Jin
- Radiochemical Laboratory
- Lanzhou University
- Lanzhou, China
| | - Ye Yuanlv
- Nuclear and Radiation Safety Center
- Ministry of Environmental Protection of China
- Beijing, China
| | - Li Zhan
- Lanzhou Institute of Chemistry Physics
- Chinese Academic of Science
- Lanzhou, China
| | - Wu Wangsuo
- Radiochemical Laboratory
- Lanzhou University
- Lanzhou, China
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179
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Xu H, Yan J, She X, Xu L, Xia J, Xu Y, Song Y, Huang L, Li H. Graphene-analogue carbon nitride: novel exfoliation synthesis and its application in photocatalysis and photoelectrochemical selective detection of trace amount of Cu²⁺. NANOSCALE 2014; 6:1406-15. [PMID: 24309635 DOI: 10.1039/c3nr04759h] [Citation(s) in RCA: 183] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Graphene-analogue nanostructures defined as a new kind of promising materials with unique electronic, surface and optical properties have received much attention in the fields of catalysis, energy storage, sensing and electronic devices. Due to the distinctive structure characteristics of the graphene-analogue materials, they brought novel and amazing properties. Herein, graphene-analogue carbon nitride (GA-C₃N₄) was synthesized by high-yield, large-scale thermal exfoliation from the graphitic C₃N₄-based intercalation compound. Graphene-analogue carbon nitride exhibited 2D thin-layer structure with 6-9 atomic thickness, a high specific surface area of 30.1 m(2) g(-1), increased photocurrent responses and improved electron transport ability, which could give rise to enhancing the photocatalytic activity and stability. The graphene-analogue carbon nitride had a new features that could make it suitable as a sensor for Cu(2+) determination. So GA-C₃N₄ is a new but promising candidate for heavy metal ions (Cu(2+)) determination in water environment. The photocatalytic mechanism and photoelectrochemical selective sensing of Cu(2+) were also discussed.
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Affiliation(s)
- Hui Xu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China.
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180
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Liu L, Shen Z, Yi M, Zhang X, Ma S. A green, rapid and size-controlled production of high-quality graphene sheets by hydrodynamic forces. RSC Adv 2014. [DOI: 10.1039/c4ra05635c] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
The synergistic enhancement of shear forces and collision effects can result in effective exfoliation of ultrathin graphene nanosheets.
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Affiliation(s)
- Lei Liu
- Beijing Key Laboratory for Powder Technology Research and Development
- Beijing University of Aeronautics and Astronautics
- Beijing 100191, China
- School of Material Science and Engineering
- Beijing University of Aeronautics and Astronautics
| | - Zhigang Shen
- Beijing Key Laboratory for Powder Technology Research and Development
- Beijing University of Aeronautics and Astronautics
- Beijing 100191, China
- Ministry of Education Key Laboratory of Fluid Mechanics
- Beijing University of Aeronautics and Astronautics
| | - Min Yi
- Beijing Key Laboratory for Powder Technology Research and Development
- Beijing University of Aeronautics and Astronautics
- Beijing 100191, China
- Ministry of Education Key Laboratory of Fluid Mechanics
- Beijing University of Aeronautics and Astronautics
| | - Xiaojing Zhang
- Beijing Key Laboratory for Powder Technology Research and Development
- Beijing University of Aeronautics and Astronautics
- Beijing 100191, China
| | - Shulin Ma
- Beijing Key Laboratory for Powder Technology Research and Development
- Beijing University of Aeronautics and Astronautics
- Beijing 100191, China
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181
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Yang X, Qin J, Jiang Y, Li R, Li Y, Tang H. Bifunctional TiO2/Ag3PO4/graphene composites with superior visible light photocatalytic performance and synergistic inactivation of bacteria. RSC Adv 2014. [DOI: 10.1039/c4ra01559b] [Citation(s) in RCA: 152] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Schematic representation of the synthetic strategy for TiO2/Ag3PO4/GR composites.
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Affiliation(s)
- Xiaofei Yang
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013, China
| | - Jieling Qin
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013, China
| | - Yan Jiang
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013, China
| | - Rong Li
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013, China
| | - Yang Li
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013, China
| | - Hua Tang
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang 212013, China
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182
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Wang J, Liang S, Ma L, Ding S, Yu X, Zhou L, Wang Q. One-pot synthesis of CdS–reduced graphene oxide 3D composites with enhanced photocatalytic properties. CrystEngComm 2014. [DOI: 10.1039/c3ce41807c] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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183
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Bhattacharya T, Majumdar B, Dey D, Sarma TK. Ultrasound mediated synthesis of α-aminophosphonates and 3,4-dihydropyrimidin-2-ones using graphene oxide as a recyclable catalyst under solvent-free conditions. RSC Adv 2014. [DOI: 10.1039/c4ra08533g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Graphene oxide functions as an effective and reusable carbocatalyst for the multicomponent synthesis of α-aminophosphonates and 3,4-dihydropyrimidinones under solvent-free conditions using ultrasonic irradiation.
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Affiliation(s)
- Tamalika Bhattacharya
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 452017, India
| | - Biju Majumdar
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 452017, India
| | - Deepa Dey
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 452017, India
| | - Tridib K. Sarma
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 452017, India
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184
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Umrao S, Abraham S, Theil F, Pandey S, Ciobota V, Shukla PK, Rupp CJ, Chakraborty S, Ahuja R, Popp J, Dietzek B, Srivastava A. A possible mechanism for the emergence of an additional band gap due to a Ti–O–C bond in the TiO2–graphene hybrid system for enhanced photodegradation of methylene blue under visible light. RSC Adv 2014. [DOI: 10.1039/c4ra10572a] [Citation(s) in RCA: 123] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Efficient visible light photodegradation of methylene blue using TiO2–graphene based composites has been reported.
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Affiliation(s)
- Sima Umrao
- Department of Physics
- Banaras Hindu University
- Varanasi, India
| | - Shiju Abraham
- Department of Physics
- Banaras Hindu University
- Varanasi, India
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
| | - Frank Theil
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- Jena, Germany
- Leibniz-Institute of Photonic Technology Jena (IPHT)
- Jena, Germany
| | - Shobhit Pandey
- Department of Metallurgical Engineering
- Indian Institute of Technology-B. H. U
- Varanasi, India
| | - Valerian Ciobota
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- Jena, Germany
| | | | - Caroline J. Rupp
- Departamento de Física
- Universidade Federal de Santa Maria
- Santa Maria, Brazil
| | - Sudip Chakraborty
- Condensed Matter Theory Group
- Department of Physics and Astronomy
- Uppsala University
- , Sweden
| | - Rajeev Ahuja
- Condensed Matter Theory Group
- Department of Physics and Astronomy
- Uppsala University
- , Sweden
| | - Jürgen Popp
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- Jena, Germany
- Leibniz-Institute of Photonic Technology Jena (IPHT)
- Jena, Germany
| | - Benjamin Dietzek
- Institute of Physical Chemistry and Abbe Center of Photonics
- Friedrich-Schiller-University
- Jena, Germany
- Leibniz-Institute of Photonic Technology Jena (IPHT)
- Jena, Germany
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185
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Keane DA, McGuigan KG, Ibáñez PF, Polo-López MI, Byrne JA, Dunlop PSM, O'Shea K, Dionysiou DD, Pillai SC. Solar photocatalysis for water disinfection: materials and reactor design. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00006d] [Citation(s) in RCA: 148] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This comprehensive review addresses the fundamentals of photocatalytic mechanism, recent developments in materials synthesis and reactor design.
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Affiliation(s)
- Donal A. Keane
- Chemistry Department and Environmental Research Institute
- University College Cork
- Cork, Ireland
| | - Kevin G. McGuigan
- Department of Physiology & Medical Physics
- Royal College of Surgeons in Ireland
- Dublin 2, Ireland
| | | | | | - J. Anthony Byrne
- Nanotechnology and Integrated Bio-Engineering Centre
- School of Engineering
- Faculty of Computing and Engineering
- University of Ulster
- Newtownabbey, UK
| | - Patrick S. M. Dunlop
- Nanotechnology and Integrated Bio-Engineering Centre
- School of Engineering
- Faculty of Computing and Engineering
- University of Ulster
- Newtownabbey, UK
| | - Kevin O'Shea
- Department of Chemistry and Biochemistry
- Florida International University
- Miami, USA
| | - Dionysios D. Dionysiou
- Environmental Engineering and Science Program
- Department of Biomedical
- Chemical and Environmental Engineering
- University of Cincinnati
- Cincinnati, USA
| | - Suresh C. Pillai
- Department of Environmental Science
- School of Science
- Institute of Technology Sligo
- Sligo, Ireland
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM)
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186
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Lu Y, Wang D, Yang P, Du Y, Lu C. Coupling ZnxCd1−xS nanoparticles with graphene-like MoS2: superior interfacial contact, low overpotential and enhanced photocatalytic activity under visible-light irradiation. Catal Sci Technol 2014. [DOI: 10.1039/c4cy00331d] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel nanocomposite composed of graphene-like MoS2 sheets and ZnxCd1−xS nanoparticles was used for photocatalytic hydrogen generation under visible light irradiation.
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Affiliation(s)
- Yongtao Lu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
| | - Dandan Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
| | - Ping Yang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
| | - Yukou Du
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
| | - Cheng Lu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123, China
- Department of Chemistry
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187
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Zeng B, Chen X, Ning X, Chen C, Hu A, Deng W. CNTs/rGO spheres decorated with CuxO (x = 1 or 2) nanoparticles and its photocatalytic performance. CATAL COMMUN 2014. [DOI: 10.1016/j.catcom.2013.08.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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188
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Chen S, Jacobs DL, Xu J, Li Y, Wang C, Zang L. 1D nanofiber composites of perylene diimides for visible-light-driven hydrogen evolution from water. RSC Adv 2014. [DOI: 10.1039/c4ra09258a] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Self-assembled 1D nanofibers of donor–accepter type perylene diimides have been used for photocatalytic H2 production from water-splitting under visible-light irradiation.
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Affiliation(s)
- Shuai Chen
- Laboratory of Environmental Sciences and Technology
- Xinjiang Technical Institute of Physics & Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Urumqi, China
| | - Daniel L. Jacobs
- NanoInstitute of Utah and Department of Materials Science and Engineering
- University of Utah
- Salt Lake City, USA
| | - Jingkun Xu
- Laboratory of Environmental Sciences and Technology
- Xinjiang Technical Institute of Physics & Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Urumqi, China
| | - Yingxuan Li
- Laboratory of Environmental Sciences and Technology
- Xinjiang Technical Institute of Physics & Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Urumqi, China
| | - Chuanyi Wang
- Laboratory of Environmental Sciences and Technology
- Xinjiang Technical Institute of Physics & Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Urumqi, China
| | - Ling Zang
- NanoInstitute of Utah and Department of Materials Science and Engineering
- University of Utah
- Salt Lake City, USA
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189
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Yuan L, Yu Q, Zhang Y, Xu YJ. Graphene–TiO2 nanocomposite photocatalysts for selective organic synthesis in water under simulated solar light irradiation. RSC Adv 2014. [DOI: 10.1039/c4ra01190b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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190
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Shen L, Huang L, Liang S, Liang R, Qin N, Wu L. Electrostatically derived self-assembly of NH2-mediated zirconium MOFs with graphene for photocatalytic reduction of Cr(vi). RSC Adv 2014. [DOI: 10.1039/c3ra45848b] [Citation(s) in RCA: 103] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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191
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Liu H, Chen Z, Jin Z, Su Y, Wang Y. A reduced graphene oxide supported Cu3SnS4 composite as an efficient visible-light photocatalyst. Dalton Trans 2014; 43:7491-8. [DOI: 10.1039/c4dt00070f] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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192
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Wang X, Yin L, Liu G. Light irradiation-assisted synthesis of ZnO–CdS/reduced graphene oxide heterostructured sheets for efficient photocatalytic H2 evolution. Chem Commun (Camb) 2014; 50:3460-3. [DOI: 10.1039/c4cc00044g] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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193
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Li Q, Meng H, Yu J, Xiao W, Zheng Y, Wang J. Enhanced Photocatalytic Hydrogen-Production Performance of Graphene-ZnxCd1−xS Composites by Using an Organic S Source. Chemistry 2013; 20:1176-85. [DOI: 10.1002/chem.201303446] [Citation(s) in RCA: 144] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Indexed: 01/29/2023]
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194
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Andryushina NS, Stroyuk OL, Yanchuk IB, Yefanov AV. A dynamic light scattering study of photochemically reduced colloidal graphene oxide. Colloid Polym Sci 2013. [DOI: 10.1007/s00396-013-3134-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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195
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Lavorato C, Primo A, Molinari R, Garcia H. N-Doped Graphene Derived from Biomass as a Visible-Light Photocatalyst for Hydrogen Generation from Water/Methanol Mixtures. Chemistry 2013; 20:187-94. [DOI: 10.1002/chem.201303689] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 10/23/2013] [Indexed: 11/11/2022]
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196
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Li X, Gao H, Liu G. A LDA+U study of the hybrid graphene/anatase TiO2 nanocomposites: Interfacial properties and visible light response. COMPUT THEOR CHEM 2013. [DOI: 10.1016/j.comptc.2013.10.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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197
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Yan J, Wang K, Xu H, Qian J, Liu W, Yang X, Li H. Visible-light photocatalytic efficiencies and anti-photocorrosion behavior of CdS/graphene nanocomposites: Evaluation using methylene blue degradation. CHINESE JOURNAL OF CATALYSIS 2013. [DOI: 10.1016/s1872-2067(12)60677-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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198
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Latorre-Sánchez M, Primo A, García H. P-Doped Graphene Obtained by Pyrolysis of Modified Alginate as a Photocatalyst for Hydrogen Generation from Water-Methanol Mixtures. Angew Chem Int Ed Engl 2013; 52:11813-6. [DOI: 10.1002/anie.201304505] [Citation(s) in RCA: 229] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Revised: 07/04/2013] [Indexed: 11/11/2022]
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199
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Latorre-Sánchez M, Primo A, García H. P-Doped Graphene Obtained by Pyrolysis of Modified Alginate as a Photocatalyst for Hydrogen Generation from Water-Methanol Mixtures. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304505] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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200
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Wang W, Yu JC, Xia D, Wong PK, Li Y. Graphene and g-C3N4 nanosheets cowrapped elemental α-sulfur as a novel metal-free heterojunction photocatalyst for bacterial inactivation under visible-light. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:8724-32. [PMID: 23859533 DOI: 10.1021/es4013504] [Citation(s) in RCA: 175] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
A new class of metal-free heterojunction photocatalysts was prepared by wrapping reduced graphene oxide (RGO) and g-C3N4 (CN) sheets on crystals of cyclooctasulfur (α-S8). Two distinctive structures were fabricated by wrapping RGO and CN sheets in different orders. The first was RGO sheets sandwiched in heterojunction of CN sheets and α-S8 (i.e., CNRGOS8), while the second structure was the other way around (i.e., RGOCNS8). Both structures exhibited antibacterial activity under visible-light irradiation. CNRGOS8 showed stronger bacterial inactivation than RGOCNS8 in aerobic conditions. However, RGOCNS8 was more active than CNRGOS8 under anaerobic condition. A possible mechanism was proposed to explain the differences between photocatalytic oxidative inactivation and reductive inactivation. As a proof-of-concept, this work could offer new inroads into exploration and utilization of graphene sheets and g-C3N4 sheets cowrapped nanocomposites for environmental applications.
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Affiliation(s)
- Wanjun Wang
- Department of Chemistry and Institute of Environment, Energy and Sustainability, The Chinese University of Hong Kong , Shatin, N.T., Hong Kong, China
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