Dataset of material measurement based on SEM images of Ag/TiO2 nanocomposite material synthesized via Horizontal Vapor Phase Growth (HVPG) technique

This data describes about the measurement technique of Ag/TiO2 nanocomposite materials that successfully synthesized via Horizontal Vapor Phase Growth (HVPG) technique. The data are obtained after specimens were placed in the Scanning Electron Microscope (SEM) chamber to be analyzed. The present data were captured from SEM with different magnification. There are total 27 variable data to be analyzed from three different parameters; growth temperature, baking time and zones. In total, 9 different quartz tubes that contains of Ag/TiO2 nanocomposite material are evaluated. Data are described in average value where the different calculations are presented. Raw data are also embedded in the Appendix for further analysis purposes. These data can be useful as the information of size measurement of Ag/TiO2 nanocomposite materials in different temperature and time during synthesis process.


Data description
The data consist of material diameter of Ag and TiO 2 raw material, and Ag/TiO 2 nanocomposite material. A total of 27 different zones was measured with at least three different locations were used as data sampling. SEM image analysis was used to measure the diameter of the materials. For instance, representative figures are shown with the measurement method. Table 1 and Fig. 1 show the average diameter measurement of Ag/TiO 2 nanocomposite material in zone 1. The measurement technique can be divided into three different baking times, and three different growth temperatures, the tube also divided into three zones and can be obtained as well. Table 2 and Fig. 2 presented data on the diameter measurement of Ag/TiO 2 in zone 2. The data are obtained based on average measurement after conducted in 3 different measurements. Table 3 and Fig. 3 revealed the average measurement of Ag/TiO 2 nanocomposite materials in zone 3. The raw data of SEM images from 27 zones within 9 different tubes are shown in supplementary file of this paper.
Detail measurements of all parameters can be seen in Table 4 included source material (raw material of Ag and TiO 2 powders). The source data also provided in the appendix.

Design, materials, and methods
There are many methods to synthesis various materials with many combinations [1], included synthesis silver and titanium dioxide nanocomposite materials [2]. El-Nour et al. [3] describe there are 2 major synthesis of Ag nanoparticle, which are physical approach and chemical approach. Krutyakov et al. [4] also explained the synthesis Ag nanoparticles that divided into two synthesis methods, which are conventional and unconventional methods. Natsuki et al. [5] explained the synthesis Ag nanoparticle using 4 main methods, which are Physical method, photochemical method, Biological method, Specifications Table   Subject Engineering Specific subject area Material science and engineering, Nanotechnology Type of data Among many methods that can be used to synthesize Ag and TiO 2 , Physical Vapor Deposition (PVD) method is one of the simplest methods with high purity output. The materials are evaporated in the Table 1 The average of Ag/TiO 2 nanocomposite diameter from zone 1.  high temperature and reach its melting point. The material then thermally deposited in the lower temperature and then condensed to form as a solid. High temperature and low pressure are used to increase the synthesis process. The present paper used a modified method of PVD to reduce the cost by using quart tube. Since the process use quartz tube and it were placed in the furnace with horizontal position, the method is called Horizontal Vapor Phase Growth (HVPG) technique. The sequence of synthesis Ag/TiO 2 nanocomposite material can be described in Fig. 4. Detail method with a detailed flowchart of HVPG technique can be  found in Muflikhun et al. [7]. Source material consists of 17.5 mg Ag powder from Aldrich Corporation and 17.5 mg TiO 2 from Degussa P25 were prepared. As a medium for growth nanocomposite, cheap quartz tube from heater components was used as shown in Fig. 5. The tube then washed and cleaned before sealing with a blowtorch at one-end. Before materials poured into the tube, the powder that contains of Ag and TiO 2 were mixed to gain equal distribution in each part. The tube that contains material (powder) then placed in the vacuum machine to remove air and pollutant that may occur. After the condition inside the tube becomes a vacuum with pressure reach   10 À6 Torr, the tube then sealed in the both-end. The tubes, then placed vertically in the furnace with half position inside the furnace and half position outside the furnace. Temperature of growth and baking time is set from the furnace with automatic off after the time fulfilled. After cooling process, the tubes that contain nanocomposite materials then cracked by using a gavel with a slow push to avoid material inside the tube to move. Small sample in each zone then placed in the SEM sample plate to be analyzed.

Measurement technique
Since it was invented by German researcher and inventor, Manfred von Ardenne in 1938, SEM is used by many scientists all around the world for analyzing and constructing tiny object to nanoscale materials. Over the past decades, development of SEM to attain higher precision, clearer image output, and faster operation process have made the nanotechnology field and analysis nanomaterial more attractive for researchers [8].
The main function of SEM is like a microscope in general, to see small objects to be seen clearer. The main difference with light microscope is the scope of SEM can have magnification to look the object up to nano scale. This ability makes SEM is used by many researchers as the vital equipment to develop new material at nano level [9].
The data shows SEM image was capable to analysis the size and measure the diameter and size of nanocomposite material that consist of Ag/TiO 2 . Since Ag/TiO 2 nanocomposite material was reported by many researchers that can be used in various applications, for instance: anti-bacterial application  [10], clean and renewable fuel [11], sensor application [12], and multifunctional applications (UV resistance, UV protection, and increase wear properties) [13].
The material measurement used random object that clearly placed in one frame. Furthermore, the measurement technique used ISO 13322-1 as a standard for measuring object [14]. The parts choice based on the object that fully located in the scope of one frame. The object that out of frame is excluded   except the main body of the object can be fully recognized. At least 3 measurements are done in one frame. The object that measured are allocated in the frame with all parts of the object is shown clearly and all objects to be measured is within the frame scope. The object analysis is illustrated in Fig. 6. Grey objects can be measured and calculated, and the white object is expelled from measured and not be calculated.
Specimens measurement technique in different parameter is shown in Fig. 7 and Fig. 8. Different shape of nanocomposite material in the different zone is shown in Fig. 7. It is shown that different shape also has different measurable. Fig. 8 shows the different shape of nanocomposite material in different baking time. The measurement value shows that diameter of the material shows different with the increase of baking time.