Photocatalytic reduction of cadmium on TiO2 nanoparticles modified with amino acids

Ruvarac-Bugarčić, Ivanka A.; Šaponjić, Zoran; Zec, S.; Rajh, Tijana; Nedeljković, Jovan M.

doi:10.1016/j.cplett.2005.03.058

Cited by 26 publications

(14 citation statements)

References 17 publications

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“…Examples of metal cation systems examined in the literature include: Ag + [524,525,[1105][1106][1107][1108][1109][1110][1111][1112][1113][1114][1115][1116][1117][1118]; Au 3+ [1117,[1119][1120][1121]; Cd 2+ [1122][1123][1124]; Cr 6+ [233,1119,[1125][1126][1127][1128][1129][1130][1131][1132][1133][1134][1135][1136][1137][1138][1139][1140]; Cu 2+ [1119,1125,1128,1130,1135,[1141][1142][1143]…”

Section: Photoreduction Reactantsmentioning

confidence: 99%

A surface science perspective on TiO2 photocatalysis

Henderson

2011

Surface Science Reports

1,855

1,634

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a b s t r a c tThe field of surface science provides a unique approach to understanding bulk, surface and interfacial phenomena occurring during TiO 2 photocatalysis. This review highlights, from a surface science perspective, recent literature that provides molecular-level insights into photon-initiated events occurring at TiO 2 surfaces. Seven key scientific issues are identified in the organization of this review. These are: (1) photon absorption, (2) charge transport and trapping, (3) electron transfer dynamics, (4) the adsorbed state, (5) mechanisms, (6) poisons and promoters, and (7) phase and form. This review ends with a brief examination of several chemical processes (such as water splitting) in which TiO 2 photocatalysis has made significant contributions in the literature.

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Section: Photoreduction Reactantsmentioning

confidence: 99%

A surface science perspective on TiO2 photocatalysis

Henderson

2011

Surface Science Reports

1,855

1,634

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“…Microcrystalline and nanocrystalline oxide semiconductors can provide the basis for the photocatalytic formation of a wide range of metal-semiconductor nanostructures, such as TiO 2 /Pt 0 , TiO 2 /Pd 0 [119,144,145], TiO 2 /Rh 0 [146], TiO 2 /Au 0 [119,[147][148][149][150][151][152][153][154][155][156][157], TiO 2 /Ag 0 [131,150,155,, TiO 2 /Cu 0 [106,107,[181][182][183][184][185][186][187], TiO 2 /Hg 0 [181], TiO 2 /Ni 0 [188], TiO 2 /Cd 0 [189,190], TiO 2 /Zn 0 , TiO 2 /Mn 0 , TiO 2 /Tl 0 [190], ZnO/Au 0 [148], ZnO/Ag 0 [191,192], ZnO/Cu 0 [109,192,193], ZnO/Pd 0 [194], and ZnO/Pt 0 [126,192,195]. Features of the photoinduced production of metal-semiconductor nanostructures were investigated [196][197]…”

Section: Photocatalytic Formation Of Metal-containing Nanoheterostrucmentioning

confidence: 99%

Photochemical formation of semiconducting nanostructures

et al. 2008

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Existing data on photochemical and photocatalytic approaches to the formation of semiconducting nanoparticles and also binary semiconducting nanostructures and nanocomposites of semiconductors with metals and polymers are reviewed. The nature of the effect of irradiation on the synthesis and properties of the obtained nanostructures and the possibility of photocatalytic control of the structural and spectral parameters of nanostructural semiconducting systems are examined.The accumulation of data on the properties of semiconducting (SC) nanomaterials, which has occurred particularly rapidly in the last 7-10 years, has opened up ever more alluring prospects for their application as light-sensitive and light-emitting components in nanophotonics [1-3], nanophotocatalysis [2,[4][5][6][7], biosensorics [8][9][10][11], and other important fields. The possibility of practical utilization is an important factor that has stimulated the search for and study of the processes involved in the formation of nanomaterials. On this account an enormous number of publications have now accumulated on the improvement of existing and development of new methods for the synthesis of semiconducting nanoparticles and nanostructures (e.g., see the reviews [6, 12-15]). A special position among them is occupied by methods based on photochemical transformations conducted either for the purpose of synthesis and directing it along a desired path or for improving the characteristics of nanostructures produced by other methods.Photochemical methods of synthesis have proved more effective than the production of nanomaterials by traditional synthetic approaches, and in a number of cases only they make it possible to achieve the assigned aim. For this reason the synthesis of semiconducting nanostructures and their modification under the conditions of photoirradiation are constantly attracting the attention of investigators, and the number of publications devoted to these questions is constantly increasing. We note, however, that they nevertheless remain disjointed.In view of the foregoing an attempt is made in the present article to organize existing data, to identify the most important directions for research and development, and thus to assess the current state of development of photochemical approaches to the formation of semiconducting nanostructures. Analysis of data on the photochemical formation and post-synthesis photochemical treatment of semiconducting nanostructures and multicomponent nanocomposites, including the nanoparticles of metals and polymers in addition to semiconductors, showed that in spite of the variety and diversity of the proposed approaches all the papers can be ascribed to only three courses: synthesis, synthesis control, and changing the characteristics of the semiconducting nanostructures. For this reason in this review photochemical approaches to the synthesis of nanoparticles of metal chalcogenides, binary semiconducting nanostructures, and nanocomposites consisting of semiconducting and conducting polymers are examin...

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“…Surface modification is a useful way to enhance the photocatalytic performance of TiO 2 . This could improve the charge transfer efficiency [15,16] .…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of rhodamine B dye with MWCNT/TiO2/C60 composites by a hydrothermal method

Shi

Yang

Wang

et al. 2011

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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Multi-walled carbon nanotube (MWCNT)/TiO 2 /C 60 composite catalysts were prepared by hydrothermal method. TiO 2 was deposited on the MWCNT surface. Their photocatalytic activities for degradation of Rhodamine B dye were studied. X-ray diffraction, field emission transmission electron microscopy, ultraviolet-visible light absorption spectrum and photoluminescence spectrum were carried out to characterize the composite catalysts. The results indicated that MWCNTs and C 60 could greatly enhance the photocatalytic activity of TiO 2 .

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Photocatalytic reduction of cadmium on TiO2 nanoparticles modified with amino acids

Cited by 26 publications

References 17 publications

A surface science perspective on TiO2 photocatalysis

A surface science perspective on TiO2 photocatalysis

Photochemical formation of semiconducting nanostructures

Photocatalytic degradation of rhodamine B dye with MWCNT/TiO2/C60 composites by a hydrothermal method

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