Abstract
Photocatalysts containing nanocrystallites of cadmium sulphide dispersed in the channels of mesoporous silicate SBA-15 exhibited enhanced activity for visible-light mediated splitting of water, as compared to bulk CdS. Whereas the incorporation of 1 wt.% Pt co-catalyst in CdS/SBA-15 led to a substantial increase in H2 yield, Au at similar loading resulted in marginally decreased activity. The results indicate that the photocatalytic activity of CdS crystallites is structure sensitive. Similarly, the role of a noble metal may be associated with the particle size dependent micro-structural features, rather than its electronic properties such as the work function or the heat of adsorption of reactant or product molecules.
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References
Fujishima A, Honda K (1972) Nature (London) 238:37
Beydoun D, Amal R, Low G, McEvoy S, (1999) J Nanopart Res 1:439
Chen X, Mao S (2007) Chem Rev 107:2891
Xu Y, Langford CH (1995) J Phys Chem 99:11501
Hsien Y–H, Chang C-F, Cheng Y–H, Cheng S (2001) Appl Catal B: Environ 31:241
Reddy EP, Davydov L, Smirniotis PG (2002) J Phys Chem B 106:3394
Gies H, Grabowski S, Bandyopadhyay M, Grunert W, Tkachenko OP, Klementiev KV, Birkner A (2003) Micropor Mesopor Mater 60:31
Adams WA, Bakker MG, Macias T, Jefcoat IA (2004) J Hazardous Mater B112:253
López-Muňoz M-J, van Grieken R, Aguado J, Marugán J (2005) Catal Today 101:307
Bhattacharya K, Tripathi AK, Dey GK, Gupta NM (2005) J Nanosci Nanotechnol 5:790
Bhattacharya K, Varma S, Kumar D, Gupta NM (2005) J Nanosci Nanotechnol 5:797
Kumar D, Gupta NM (2005) Catal Surv Asia 9:35
Lunawat PS, Senapati S, Kumar R, Gupta NM (2007) Int J Hydrogen Energy 32:2784
Kiwi J, Gratzel M (1979) Nature 281:657
Hirai T, Nanda M, Komasawa I (2003) J. Colloid Interface Sci 268:394
Zhao D, Huo Q, Feng J, Chmelka B, Stucky G (1998) J Am Chem Soc 120:6024
Lin C-S, Khan MR, Lin SD (2006) J Colloid Interface Sci 299:678
Kundu M, Khosravi AA, Kulkarni SK (1997) J Mater Sci 32:245
Choudhary TV, Goodman DW (2002) Top Catal 21:25
Haruta M (1997) Catal Today 36:153
Rao CNR, Kulkarni GU, Thomas PJ, Edwards PP (2002) Chem Eur J 8:29
Somorjai GA (1994) Surf Sci 299-300:849
Zhang Z, Wang CC, Zakaria R, Ying JY (1998) J Phys Chem B 102:10871
Kominami H, Muratami S, Kato J, Kera Y, Ohtani B (2002) J Phys Chem B 106:10501
Kamat PV, Flumiani M, Dawson A (2002) Colloids Surf A 202:269
Nosaka Y, Norimatsu K, Miyama H (1984) Chem Phys Lett 106:128
Subramanian V, Wolf E, Kamat PV (2001) J Phys Chem B 105:11439
Satish M, Viswanathan B, Viswanath RP (2006) Int J Hydrogen Energy 31:891
Bond GC, Thompson DT (2000) Gold Bull 33:41
Rioux RM, Song H, Hoefelmeyer JD, Yang P, Somorjai GA (2005) J Phys Chem B 109:2192
Lide DR (2005) CRC handbook of chemistry and physics, 85th edn. CRC Press, Boca Raton, pp 12–130
Toyoshima I, Somorjai GA (1979) Heat of hydrogen and oxygen adsorption. Catal Rev Sci Eng 19:105
Bodé DD Jr (2007) In: Hirschfelder JO, Henderson D (ed) Advances in chemical physics: chemical dynamics, vol 21. Wiley Inter Science, p 361
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NMG thanks CSIR for a research grant under the Emeritus Scientist scheme. Authors thank Mr. Mahesh Kadgaonkar for helping in manuscript preparation.
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Lunawat, P.S., Kumar, R. & Gupta, N.M. Structure Sensitivity of Nano-structured CdS/SBA-15 Containing Au and Pt Co-catalysts for the Photocatalytic Splitting of Water. Catal Lett 121, 226–233 (2008). https://doi.org/10.1007/s10562-007-9319-y
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DOI: https://doi.org/10.1007/s10562-007-9319-y