Microenvironment modulation of TiO2 nanosheets for highly selective photocatalytic CO2 reduction
Photocatalytic reduction of CO2 and H2O into valuable fuels is a promising and sustainable approach. Phosphate is crucial for the production of ATP (adenosine triphosphate), highlighting its significance in the transfer of energy essential for life. In this study, we design and prepare a modified Ti...
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Sociedade Brasileira de Química
2025-02-01
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| Series: | Química Nova |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422025000400312&lng=en&tlng=en |
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| _version_ | 1823859195039973376 |
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| author | Xingxing Zheng Jun Yang |
| author_facet | Xingxing Zheng Jun Yang |
| author_sort | Xingxing Zheng |
| collection | DOAJ |
| description | Photocatalytic reduction of CO2 and H2O into valuable fuels is a promising and sustainable approach. Phosphate is crucial for the production of ATP (adenosine triphosphate), highlighting its significance in the transfer of energy essential for life. In this study, we design and prepare a modified TiO2 surface with phosphate to reduce CO2 using light. The TiO2+PO43- composite performs exceptionally well, producing CO at a rate of 36.93 μmol g-1 h-1, which is three times higher than pure TiO2, with nearly 100% selectivity for CO. Both experiments and theoretical analyses show that the phosphorus species create a channel for electron transfer between PO43- and Ti, improving charge movement. Modification by phosphate ions (PO43-) alters the surface microenvironment of TiO2, making it easier for more water molecules to be adsorbed on the surface. Furthermore, the PO43- modification adds more oxygen-containing functional groups to the surface. These groups act as sites that help in capturing and activating CO2. As a result, TiO2+PO43- stands out as a strong candidate for CO2 reduction, thanks to better charge transfer and more active sites. |
| format | Article |
| id | doaj-art-9c0c0bbe8122475b9b9cb7e61a9f7fb3 |
| institution | Kabale University |
| issn | 1678-7064 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj-art-9c0c0bbe8122475b9b9cb7e61a9f7fb32025-02-11T07:43:22ZengSociedade Brasileira de QuímicaQuímica Nova1678-70642025-02-0148410.21577/0100-4042.20250100Microenvironment modulation of TiO2 nanosheets for highly selective photocatalytic CO2 reductionXingxing Zhenghttps://orcid.org/0009-0002-2833-5120Jun Yanghttps://orcid.org/0000-0002-9940-5571Photocatalytic reduction of CO2 and H2O into valuable fuels is a promising and sustainable approach. Phosphate is crucial for the production of ATP (adenosine triphosphate), highlighting its significance in the transfer of energy essential for life. In this study, we design and prepare a modified TiO2 surface with phosphate to reduce CO2 using light. The TiO2+PO43- composite performs exceptionally well, producing CO at a rate of 36.93 μmol g-1 h-1, which is three times higher than pure TiO2, with nearly 100% selectivity for CO. Both experiments and theoretical analyses show that the phosphorus species create a channel for electron transfer between PO43- and Ti, improving charge movement. Modification by phosphate ions (PO43-) alters the surface microenvironment of TiO2, making it easier for more water molecules to be adsorbed on the surface. Furthermore, the PO43- modification adds more oxygen-containing functional groups to the surface. These groups act as sites that help in capturing and activating CO2. As a result, TiO2+PO43- stands out as a strong candidate for CO2 reduction, thanks to better charge transfer and more active sites.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422025000400312&lng=en&tlng=enTiO2phosphatemicroenvironmentCO2 reduction |
| spellingShingle | Xingxing Zheng Jun Yang Microenvironment modulation of TiO2 nanosheets for highly selective photocatalytic CO2 reduction Química Nova TiO2 phosphate microenvironment CO2 reduction |
| title | Microenvironment modulation of TiO2 nanosheets for highly selective photocatalytic CO2 reduction |
| title_full | Microenvironment modulation of TiO2 nanosheets for highly selective photocatalytic CO2 reduction |
| title_fullStr | Microenvironment modulation of TiO2 nanosheets for highly selective photocatalytic CO2 reduction |
| title_full_unstemmed | Microenvironment modulation of TiO2 nanosheets for highly selective photocatalytic CO2 reduction |
| title_short | Microenvironment modulation of TiO2 nanosheets for highly selective photocatalytic CO2 reduction |
| title_sort | microenvironment modulation of tio2 nanosheets for highly selective photocatalytic co2 reduction |
| topic | TiO2 phosphate microenvironment CO2 reduction |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422025000400312&lng=en&tlng=en |
| work_keys_str_mv | AT xingxingzheng microenvironmentmodulationoftio2nanosheetsforhighlyselectivephotocatalyticco2reduction AT junyang microenvironmentmodulationoftio2nanosheetsforhighlyselectivephotocatalyticco2reduction |