Photodeposition method

A 0.5 wt% Pt/Ti02 catalyst was prepared by the photodeposition method. A 100 mg Ti02 (Aeroxide P25S Degussa, 50 m /g, approximately 70% anatase and 30% mtile) were suspended in 30 mL aqueous solution with 1.4 mg chloroplatinic acid... 

Kato H, Asakura K, Kudo A (2003) Highly efficient water splitting into H2 and O2 over lanthanum-doped NaTaOs photocatalysts with high crystallinity and surface nanostructure. J Am Chem Soc 125 3082-3089 Iwase A, Kato H, Kudo A (2005) A novel photodeposition method in the presence of nitrate ions for loading of an iridium oxide cocatalyst for water splitting. Chem Lett 34, 946-947... 

A crystal size of ca. 10 nm was reported from an acidic thioacetamide bath [8]. The only other acidic bath where crystal size could be extracted was the photodeposition method using a thiosulphate solution, where, from the XRD, a size of <10 nm could be estimated [26]... 

Fig. 15 Rates of H2 and O2 evolution under visible light (X > 400 nm) over Cr203/Rh/GaN ZnO prepared by the adsorption method, and the previous photodeposition method. Almost the same amount of Rh (0.3-0.4 wt%) is loaded on each catalyst. Catalyst (0.15 g) distilled water (400 mL) light source, high-pressure mercury lamp (450 W) Inner irradiation-type reaction vessel made of Pyrex with an aqueous NaN02 solution (2 M) Alter...

There are many reports on PROX over Au/CeO [76-82], Au/TiOj [75, 80, 83-89], Au/ZrO [75, 80, 90], Au/FePj [91-99], Au/Fe(OH)3 [100, 101], Au/MnO [95], Au/ ZnO [98, 102], Au/ThO [103], and Au/Al Oj [75, 80, 104, 105]. Efforts have been made to smdy the influences of preparation methods/details, pretreatment details, and reaction conditions on catalytic performance. For instance, Chen and coworkers developed a series of Au/TiO catalysts via a photodeposition method [89]. The authors smdied the influences of pH value, power of UV Ughf and irradiation time on the physicochemical and catalytic properties of the catalysts. Scire and coworkers investigated the influences of different preparation methods and details on the catalytic performance of Au/Fe Oj [99] and Au/CeO [82]. Yuan and coworkers prepared gold nanoparticles on CeO with different morphologies and found that the activity in PROX followed the... 

Pt co-catalyst was loaded by photodeposition method, as the similar way to the previous study [8], Loading amoimt was 0.1 wt%. The CaTi03 sample (2.0 g) was dispersed in methanol aqueous solution (10 vol%, 400 ml) containing H2PtCl6 (Wako, 99.9%), followed by photoirradiation for 1 h using a 300 W xenon lamp. 

Although there has been a lot of interest in the PDAs due to their unique chemical, optical, and electronic properties, no method is available yet that is generally applicable to the formation of polydiacetylene films possessing suf-ficiendy high quality for technological applications, i.e., electronic and photonic devices, due to the insolubility of many polydiacetylenes. There is a continuous search for techniques to increase the processibility and quality of PDA film. Paley et al. reported a novel technique to obtain high-quality thin PDA films. They used photodeposition technique from monomer solutions onto UV trans-... 

Multianalyte detection in a single sample has been reported extensively using electrochemical, piezoelectric, electrical resistance, - and oph-capo 11,33 39 methods. The sensor arrays were fabricated by photolithography and soft lithography, - inkjet-, screen-, and pin-prinhng, - and photodeposition.i 34,i4,45 jhese techniques involve labor-intensive multistep fabrication and image analysis and pattern-recognihon codes. The monochromatic or multicolor OLED excitation platform in (micro)arrays would drastically simplify fabrication and reduce cost. 

More detailed research revealed that catalysts prepared by DP had an order of magnitude higher turnover frequency (TOF) compared to Pt-based analogs and four orders of magnitude higher TOF compared to Au-based catalysts prepared via photodeposition or impregnation methods [96]. Importantly, catalysts made by such relatively easy and simple approaches contained particles with relatively wide size distributions [96]. 

This method has been scarcely used, particularly for Au, and the few publications found in literature deal only with Ti02 supports [1-4]. Reports on photodeposited Pt catalysts are more common [5,6] however, to the best of our knowledge, no Pt or Au photodeposition studies were performed so far on ZnO. 

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