Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
Light-tuned selective photosynthesis of azo- and azoxy-aromatics using graphitic C3N4. / Dai, Yitao; Li, Chao; Shen, Yanbin et al.
In: Nature Communications, Vol. 9, No. 60, 04.01.2018, p. 1-7.Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review
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TY - JOUR
T1 - Light-tuned selective photosynthesis of azo- and azoxy-aromatics using graphitic C3N4
AU - Dai, Yitao
AU - Li, Chao
AU - Shen, Yanbin
AU - Lim, Tingbin
AU - Xu, Jian
AU - Li, Yongwang
AU - Niemantsverdriet, Hans
AU - Besenbacher, Flemming
AU - Lock, Nina
AU - Su, Ren
PY - 2018/1/4
Y1 - 2018/1/4
N2 - Solar-driven photocatalysis has attracted significant attention in water splitting, CO2 reduction and organic synthesis. The syntheses of valuable azo- and azoxyaromatic dyes via selective photoreduction of nitroaromatic compounds have been realised using supported plasmonic metal nanoparticles at elevated temperatures (≥90 °C); however, the high cost, low efficiency and poor selectivity of such catalyst systems at room temperature limit their application. Here we demonstrate that the inexpensive graphitic C3N4 is an efficient photocatalyst for selective syntheses of a series of azo- and azoxy-aromatic compounds from their corresponding nitroaromatics under either purple (410 nm) or blue light (450 nm) excitation. The high efficiency and high selectivity towards azo- and azoxy-aromatic compounds can be attributed to the weakly bound photogenerated surface adsorbed H-atoms and a favourable N-N coupling reaction. The results reveal financial and environmental potential of photocatalysis for mass production of valuable chemicals.
AB - Solar-driven photocatalysis has attracted significant attention in water splitting, CO2 reduction and organic synthesis. The syntheses of valuable azo- and azoxyaromatic dyes via selective photoreduction of nitroaromatic compounds have been realised using supported plasmonic metal nanoparticles at elevated temperatures (≥90 °C); however, the high cost, low efficiency and poor selectivity of such catalyst systems at room temperature limit their application. Here we demonstrate that the inexpensive graphitic C3N4 is an efficient photocatalyst for selective syntheses of a series of azo- and azoxy-aromatic compounds from their corresponding nitroaromatics under either purple (410 nm) or blue light (450 nm) excitation. The high efficiency and high selectivity towards azo- and azoxy-aromatic compounds can be attributed to the weakly bound photogenerated surface adsorbed H-atoms and a favourable N-N coupling reaction. The results reveal financial and environmental potential of photocatalysis for mass production of valuable chemicals.
UR - http://www.scopus.com/inward/record.url?scp=85040240584&partnerID=8YFLogxK
U2 - 10.1038/s41467-017-02527-8
DO - 10.1038/s41467-017-02527-8
M3 - Journal article
C2 - 29302040
AN - SCOPUS:85040240584
VL - 9
SP - 1
EP - 7
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 60
ER -