Titanium Dioxide-Based Nanomaterials for Photocatalytic Fuel Generations

Ma, Yi; Wang, Xiuli; Jia, Yushuai; Chen, Xiaobo; Han, Hongxian; Li, Can

doi:10.1021/cr500008u

Cited by 2,219 publications

(1,358 citation statements)

References 705 publications

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“…Various approaches have been proposed to address CO 2 emissions, including CO 2 capture and storage,72 electrocatalytic reduction73, 74 or photocatalytic reduction75, 76 of CO 2 . The latter two processes are particularly attractive as they can yield valuable chemicals or fuels.…”

Section: Applicationsmentioning

confidence: 99%

Recent Advances in the Synthesis, Characterization and Application of Zn⁺‐containing Heterogeneous Catalysts

et al. 2016

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Monovalent Zn+ (3d104s1) systems possess a special electronic structure that can be exploited in heterogeneous catalysis and photocatalysis, though it remains challenge to synthesize Zn+‐containing materials. By careful design, Zn+‐related species can be synthesized in zeolite and layered double hydroxide systems, which in turn exhibit excellent catalytic potential in methane, CO and CO2 activation. Furthermore, by utilizing advanced characterization tools, including electron spin resonance, X‐ray absorption fine structure and density functional theory calculations, the formation mechanism of the Zn+ species and their structure‐performance relationships can be understood. Such advanced characterization tools guide the rational design of high‐performance Zn+‐containing catalysts for efficient energy conversion.

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Section: Applicationsmentioning

confidence: 99%

Recent Advances in the Synthesis, Characterization and Application of Zn⁺‐containing Heterogeneous Catalysts

et al. 2016

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“…[7][8][9][10][11][12][13][14] Anatase TiO 2 is considered to be the most efficient and environmentally friendly photocatalyst. 15 However, its large band gap (~3.4 eV) allows only ultraviolet light absorption, which hinders its potential photocatalytic applications and commercialization. The size dependency of photocatalytic solar hydrogen production 16,17 and water splitting 2,18 were investigated using suspended CdE (E = S and Se) quantum dots (QDs) as a model system, but Cd cytotoxicity hinders their use in future applications.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Control by Quantum Confinement and Surface Ligand Coating of Photocatalytic Efficiency in Chalcopyrite Copper Indium Diselenide Nanocrystals

et al. 2016

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ABSTRACT:In the past few years, there has been an immense interest in the preparation of sustainable photocatalysts composed of semiconductor nanocrystals (NCs) as one of their component. We report here, for the first time, the effects of structural parameters of copper indium diselenide (CuInSe 2 ) NCs on visible light driven photocatalytic degradation of pollutants under homogeneous conditions. Ligand exchange reactions were performed replacing insulating, oleylamine capping with poly(ethylene glycol) thiols to prepare PEG-thiolate-capped, 1.8 to 5.3 nm diameter CuInSe 2 NCs to enhance their solubility in water. This unique solubility property caused inner-sphere electron transfer reactions (O 2 to O 2 −) to occur at the NCs surface allowing for sustainable photocatalytic reactions. Electrochemical characterization of our dissolved CuInSe 2 NCs showed that the thermodynamic driving force (-ΔG) for oxygen reduction, which increased with decreased NCs size, was the dominant contributor to the overall process when compared to the contribution light absorption and the coulombic interaction energies of electronhole pair (J e/h ). A two-fold increase in phenol degradation efficiency (from 30 to ~60%) was achieved by controlled variation of the diameter of CuInSe 2 NCs from 5.3 to 1.8 nm. The surface ligand dependency of photocatalytic efficiency was also investigated and a profound effect on phenol degradation was observed. Our PEG-thiolate-capped CuInSe 2 NCs showed photocatalytic activity towards other organic compounds, such as N, N-dimethyl-4-phenylenediamine, methylene blue, and thiourea, which showed decomposition under visible light.3

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“…However, synthesis of this kind of hierarchical hollow structures is generally challenging due to the difference of stability between core and shell materials 24, 25. For example, TiO 2 is a kind of well‐known nanomaterials as photocatalysts,26, 27 and anode material of Li‐ion batteries,28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41 owing to its low cost, environmental benignity, physicochemical stability, and safety, but most of them are nanoparticles or primary nanoparticle‐constructed hollow spheres, very few researches involve the synthesis of 1D‐ or 2D‐constructed hollow spheres, through template methods 42, 43, 44…”

Section: Introductionmentioning

confidence: 99%

Self‐Templated Synthesis of Ultrathin Nanosheets Constructed TiO₂ Hollow Spheres with High Electrochemical Properties

Xie

et al. 2016

Advanced Science

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TiO2 is well‐known nanomaterials and mostly used as solid nanoparticles, and normal hollow spheres for photocatalysts or electrode materials. In this study, a novel self‐templated method is presented to successfully fabricate high‐surface‐area ultrathin nanosheets constructed TiO2 hollow spheres through the solvothermal treatment of the titanate–silicone composite particles combined with calcination. The uniquely structured hollow spheres exhibit excellent rate capability and good cycle stability even at a high current density of ≈10 C for the anode material of Li‐ion battery.

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Titanium Dioxide-Based Nanomaterials for Photocatalytic Fuel Generations

Cited by 2,219 publications

References 705 publications

Recent Advances in the Synthesis, Characterization and Application of Zn⁺‐containing Heterogeneous Catalysts

Recent Advances in the Synthesis, Characterization and Application of Zn⁺‐containing Heterogeneous Catalysts

Investigating the Control by Quantum Confinement and Surface Ligand Coating of Photocatalytic Efficiency in Chalcopyrite Copper Indium Diselenide Nanocrystals

Self‐Templated Synthesis of Ultrathin Nanosheets Constructed TiO₂ Hollow Spheres with High Electrochemical Properties

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Titanium Dioxide-Based Nanomaterials for Photocatalytic Fuel Generations

Cited by 2,219 publications

References 705 publications

Recent Advances in the Synthesis, Characterization and Application of Zn+‐containing Heterogeneous Catalysts

Recent Advances in the Synthesis, Characterization and Application of Zn+‐containing Heterogeneous Catalysts

Investigating the Control by Quantum Confinement and Surface Ligand Coating of Photocatalytic Efficiency in Chalcopyrite Copper Indium Diselenide Nanocrystals

Self‐Templated Synthesis of Ultrathin Nanosheets Constructed TiO2 Hollow Spheres with High Electrochemical Properties

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Recent Advances in the Synthesis, Characterization and Application of Zn⁺‐containing Heterogeneous Catalysts

Recent Advances in the Synthesis, Characterization and Application of Zn⁺‐containing Heterogeneous Catalysts

Self‐Templated Synthesis of Ultrathin Nanosheets Constructed TiO₂ Hollow Spheres with High Electrochemical Properties