Ta/Ti<svg style="vertical-align:-4.50008pt;width:24.775px;" id="M1" height="20.887501" version="1.1" viewBox="0 0 24.775 20.887501" width="24.775"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,20.8875)">
		<g transform="translate(72,-55.29)">
			<text transform="matrix(1,0,0,-1,-71.95,59.83)">
				<tspan style="font-size: 17.93px; " x="0" y="0">O</tspan>
			</text>

			<text transform="matrix(1,0,0,-1,-59,55.34)">
				<tspan style="font-size: 12.55px; " x="0" y="0">2</tspan>
			</text>

		</g>
	</g>
</svg>-and Nb/Ti<svg style="vertical-align:-4.50008pt;width:24.775px;"  height="20.887501" version="1.1" viewBox="0 0 24.775 20.887501" width="24.775"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,20.8875)">
		<g transform="translate(72,-55.29)">
			<text transform="matrix(1,0,0,-1,-71.95,59.83)">
				<tspan style="font-size: 17.93px; " x="0" y="0">O</tspan>
			</text>

			<text transform="matrix(1,0,0,-1,-59,55.34)">
				<tspan style="font-size: 12.55px; " x="0" y="0">2</tspan>
			</text>

		</g>
	</g>
</svg>-Mixed Oxides as Efficient Solar Photocatalysts: Preparation, Characterization, and Photocatalytic Activity

<table>UV-vis diffuse reflectance spectra of the Ta/TiO<sub>2</sub>, Nb/TiO<sub>2</sub>, and untreated TiO<sub>2</sub> at different ratios. The insert Figure shows the band gap estimation.</table>

International Journal of Photoenergy

fig4

Figure 4

Figure 4: Ta/Ti<svg style="vertical-align:-4.50008pt;width:24.775px;" id="M1" height="20.887501" version="1.1" viewBox="0 0 24.775 20.887501" width="24.775"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,20.8875)">
		<g transform="translate(72,-55.29)">
			<text transform="matrix(1,0,0,-1,-71.95,59.83)">
				<tspan style="font-size: 17.93px; " x="0" y="0">O</tspan>
			</text>

			<text transform="matrix(1,0,0,-1,-59,55.34)">
				<tspan style="font-size: 12.55px; " x="0" y="0">2</tspan>
			</text>

		</g>
	</g>
</svg>-and Nb/Ti<svg style="vertical-align:-4.50008pt;width:24.775px;"  height="20.887501" version="1.1" viewBox="0 0 24.775 20.887501" width="24.775"  xmlns="http://www.w3.org/2000/svg">
	<g transform="matrix(1.25,0,0,-1.25,0,20.8875)">
		<g transform="translate(72,-55.29)">
			<text transform="matrix(1,0,0,-1,-71.95,59.83)">
				<tspan style="font-size: 17.93px; " x="0" y="0">O</tspan>
			</text>

			<text transform="matrix(1,0,0,-1,-59,55.34)">
				<tspan style="font-size: 12.55px; " x="0" y="0">2</tspan>
			</text>

		</g>
	</g>
</svg>-Mixed Oxides as Efficient Solar Photocatalysts: Preparation, Characterization, and Photocatalytic Activity 

Figure 4 | Ta/Ti
	
		
			
				O
			

			
				2
			

		
	
-and Nb/Ti
	
		
			
				O
			

			
				2
			

		
	
-Mixed Oxides as Efficient Solar Photocatalysts: Preparation, Characterization, and Photocatalytic Activity 

International Journal of Photoenergy

Ta/Ti O 2 -and Nb/Ti O 2 -Mixed Oxides as Efficient Solar Photocatalysts: Preparation, Characterization, and Photocatalytic Activity

Figure 4

Ta/Ti-and Nb/Ti-Mixed Oxides as Efficient Solar Photocatalysts: Preparation, Characterization, and Photocatalytic Activity