Synthesis of the TiO2/g-C3N4 photocatalyst and its photocatalytic performance for selective oxidation of alcohols
A composite photocatalyst, xTCN (xOTiO2/g-C3N4, where x represents the added quantity of graphite carbon nitride (g-C3N4)), was synthesized using a straightforward one-step hydrothermal method with H2O2 as an oxidant. The H2O2 incorporation into the xTCN composite facilitated the enrichment of oxyge...
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| Format: | Article |
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Sociedade Brasileira de Química
2025-07-01
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| Series: | Química Nova |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422025000700303&lng=en&tlng=en |
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| author | Shuangyan Meng Bin Liu Minglin Xie Chaoxin Yun Jin Qiang Kaizhou He Zhiwang Yang Xiangqian Wang |
| author_facet | Shuangyan Meng Bin Liu Minglin Xie Chaoxin Yun Jin Qiang Kaizhou He Zhiwang Yang Xiangqian Wang |
| author_sort | Shuangyan Meng |
| collection | DOAJ |
| description | A composite photocatalyst, xTCN (xOTiO2/g-C3N4, where x represents the added quantity of graphite carbon nitride (g-C3N4)), was synthesized using a straightforward one-step hydrothermal method with H2O2 as an oxidant. The H2O2 incorporation into the xTCN composite facilitated the enrichment of oxygen (O) in titanium dioxide (TiO2). This synthesis process effectively reduced the bandgap energy, minimizing the recombination of photogenerated carriers. Concurrently, an O atom was integrated into the g-C3N4 molecule, which altered its bandgap structure and enhanced the photogenerated electron-hole separation efficiency. The dual modification effect was observed when 0.9TCN was used as the catalyst, which converted 77% of benzalcohol with a selectivity exceeding 99%. Additionally, five cycles of reuse only slightly decreased the benzalcohol conversion (by 16%) and selectivity (by 9%), indicating good reusability of the xTCN photocatalyst. The xTCN photocatalyst had an unchanged molecular structure before and after the photocatalytic reaction, demonstrating its superior light stability. The potential photocatalytic reaction mechanism was explored through an active species capture experiment and a Mott-Schottky (M-S) curve test. The results of these studies suggested that •O2- and •OH were the primary reactive species in the photocatalytic reaction. |
| format | Article |
| id | doaj-art-eb9f3dfb839a4cd7acdc3d3038288558 |
| institution | Kabale University |
| issn | 1678-7064 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj-art-eb9f3dfb839a4cd7acdc3d30382885582025-08-20T03:51:18ZengSociedade Brasileira de QuímicaQuímica Nova1678-70642025-07-0148710.21577/0100-4042.20250155Synthesis of the TiO2/g-C3N4 photocatalyst and its photocatalytic performance for selective oxidation of alcoholsShuangyan Menghttps://orcid.org/0009-0003-5431-4048Bin LiuMinglin XieChaoxin YunJin QiangKaizhou HeZhiwang YangXiangqian Wanghttps://orcid.org/0009-0009-1923-7538A composite photocatalyst, xTCN (xOTiO2/g-C3N4, where x represents the added quantity of graphite carbon nitride (g-C3N4)), was synthesized using a straightforward one-step hydrothermal method with H2O2 as an oxidant. The H2O2 incorporation into the xTCN composite facilitated the enrichment of oxygen (O) in titanium dioxide (TiO2). This synthesis process effectively reduced the bandgap energy, minimizing the recombination of photogenerated carriers. Concurrently, an O atom was integrated into the g-C3N4 molecule, which altered its bandgap structure and enhanced the photogenerated electron-hole separation efficiency. The dual modification effect was observed when 0.9TCN was used as the catalyst, which converted 77% of benzalcohol with a selectivity exceeding 99%. Additionally, five cycles of reuse only slightly decreased the benzalcohol conversion (by 16%) and selectivity (by 9%), indicating good reusability of the xTCN photocatalyst. The xTCN photocatalyst had an unchanged molecular structure before and after the photocatalytic reaction, demonstrating its superior light stability. The potential photocatalytic reaction mechanism was explored through an active species capture experiment and a Mott-Schottky (M-S) curve test. The results of these studies suggested that •O2- and •OH were the primary reactive species in the photocatalytic reaction.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422025000700303&lng=en&tlng=enTiO2g-C3N4visible light catalysisselective oxidation of alcohol. |
| spellingShingle | Shuangyan Meng Bin Liu Minglin Xie Chaoxin Yun Jin Qiang Kaizhou He Zhiwang Yang Xiangqian Wang Synthesis of the TiO2/g-C3N4 photocatalyst and its photocatalytic performance for selective oxidation of alcohols Química Nova TiO2 g-C3N4 visible light catalysis selective oxidation of alcohol. |
| title | Synthesis of the TiO2/g-C3N4 photocatalyst and its photocatalytic performance for selective oxidation of alcohols |
| title_full | Synthesis of the TiO2/g-C3N4 photocatalyst and its photocatalytic performance for selective oxidation of alcohols |
| title_fullStr | Synthesis of the TiO2/g-C3N4 photocatalyst and its photocatalytic performance for selective oxidation of alcohols |
| title_full_unstemmed | Synthesis of the TiO2/g-C3N4 photocatalyst and its photocatalytic performance for selective oxidation of alcohols |
| title_short | Synthesis of the TiO2/g-C3N4 photocatalyst and its photocatalytic performance for selective oxidation of alcohols |
| title_sort | synthesis of the tio2 g c3n4 photocatalyst and its photocatalytic performance for selective oxidation of alcohols |
| topic | TiO2 g-C3N4 visible light catalysis selective oxidation of alcohol. |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422025000700303&lng=en&tlng=en |
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