Nano-Coating technology


(Data Compiled: November 25, 2009)

XTI Active-NucleusTM Nano Particle Technology Information

World's unique low temperature processing and no binder needed give X-TiO2 best efficiency in application and performance.

Fundamental Data Comparison Table

The fundamental data of photocatalyst sol (TiO2) of X-TiO2TM Ti compared with other TiO2 shown on Table 1. X-TiO2TM Ti product (X-TiO2-TDS-B-10) claims for excellent quality which have 10 nm secondary particles size and agglomeration-free for a long time.

Table 1: The Basic Information between X-TiO2TM Ti Nano TiO2 and Five Products by Other Companies.

Comparison is the way to tell which is distinguished from others. Take six typical photocatalytic products samples as shown on following page. But first, P5 is a powder form, so we delete it, leaving X-TiO2 (transparent) against four others, P1, P2, P3 and P4 (all "slurry").

When applied the two group materials on actual products, the "slurry" group suffered from a big barrier of Fixation and Negative photocatalytic activity. The reasons were that the big size of secondary particles caused TiO2 to precipitate or agglomerate, and also the binders misused. Conversely, the Photocatalyst Sol(X-TiO2) which possesses small Nano size of secondary particles becomes the distinguished choice.

However, few people in the TiO2 field are aware of the effective applications today. Are their TiO2 sprayed on any substrate can perform excellent photocatalytic property? The answer is NO. Because: (a) Using wrong binder still existing in the field, which sparks photocatalytic material to lose its efficiency. (b) Due to organic dispersing agents caused TiO2 not to precipitate will resist to photocatalytic activity, making photocatalyst sol applied in the room temperature does not generate any photocatalytic function. Therefore, it is needed for selecting different binder for different substrate, or sintering (above 300C) the TiO2 thin films to decompose dispersing agents to secure better photocatalytic activity. Nevertheless, their process is always complex, time-consuming, and at higher cost and so on.

With XTI Active-Nucleus Nano-Particle Technology, X-TiO2TM offers different selections of photocatalyst solutions all of which can be processed at the room temperature and no binder needed, distinguished itself from available technology, for easy, rapid, and lower cost application. The purpose of this document identifies the contrasted difference between X-TiO2TM and all other TiO2 exist in the market today.

The Efficacy of X-TiO2TM vs. others

The comparisons among all techniques available now:

World-Exclusive X-TiO2TM Bonding Technology

The main factors influence the photocatalytic activity of actual products by utilizing photocatalyst sol:

1. Secondary particle size

2. The selection of binder

3. Sintering or not(>300C)

4. The characteristics of substrates

Adhesive Comparison

After available photocatalyst sol sprayed on the surface of substrates, it is sintered under high temperature. Then TiO2 will have excellent adhesion. Conversely, because of the bad adherence of TiO2 coated under low temperature, the applications are limited. X-TiO2TM Ti had overcome the above problems and then developed the TiO2 coated technology under low temperature.

The adhesion test can be used by an eraser (Table 2).

1. Spray the photocatalyst sol on woody material (low-temperature material) and fix it.

2. Use the eraser

3. Scratch the photocatalystic film by eraser continuously for the quantitative results.

4. Details as the reference of TOTO Company adhesion.

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