Plasmonic Titania Photocatalysts Active under UV and Visible-Light Irradiation: Influence of Gold Amount, Size, and Shape

Table 1

Properties of bare and gold modified TiO₂ photocatalysts.

Name	Bare titania			Titania after deposition of 2 wt% of gold**
	BET*/m^2g^−1	PPS* /nm	Form^a	Color^b	LSPR		PPS^d/nm	Vis activity^e/μmol h^−1
ST-01	198	8	A	d. pink	narrow	538	9	0.07
TIO-10	100	15	A	d. violet	narrow	558	12	0.08
Aldrich_A	8	217	A/r	l. violet	broad	567	34	0.28
ST-G1	5.7	250	R	violet	broad	580	43	0.29
Aldrich_R	4	517	R/a	l. grey	broad	593	60	0.43
TIO-5	3	570	R/a	l. grey	broad	605	44	0.57

Symbols * and ** correspond to data in [37] and [25], respectively. ^aA: anatase, R: rutle, A/r: predominantly anatase, R/a: predominantly rutile, ^bd.: dark, l.: light, : LSPR wavelength at maximum absorption, ^dPPS: primary particle size, ^eactivity measured with mercury lamp and a Y48 cut-off filter (>470 nm).