Visible light driven reduction of carbon dioxide with water on modified Sr3Ti2O7 catalysts

Jeyalakshmi Velu; Mahalakshmy Rajaram; Ramesh Kanaparthi; Rao Peddy V. C.; Choudary Nettem V.; Ganesh Gandham Sri; Thirunavukkarasu Kandasamy; Krishnamurthy Konda Ramasamy; Viswanathan Balasubramanian

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Visible light driven reduction of carbon dioxide with water on modified Sr3Ti2O7 catalysts

机译：可见光驱动二氧化碳用水改性SR3TI2O7催化剂

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Layered perovskite type Sr3Ti2O7 catalysts, doped with N, S and Fe have been prepared by modified polymer complex method, characterized and evaluated for photo reduction of CO2 in aqueous alkaline medium using UV-visible radiation. EDXA and XRD data reveal the incorporation of the dopants into the titanate matrix. The presence of N in substitutional and interstitial locations, S as S6+ and Fe as Fe3+ species are indicated by XPS analysis. DRS and photo luminescence studies show that the dopants form additional energy levels within the band gap, promoting visible light absorption and retarding recombination of the charge carriers. Morphological changes and smaller crystallites also minimize recombination. Layered structure of Sr3Ti2O7 facilitates easy transport of charge carriers and separation of oxidation/reduction reaction centres. Structural, morphological and photo physical characteristics of doped catalysts improve the activity significantly. Sr3Ti2O7 co-doped with N, S and Fe together, displays maximum apparent quantum yield for CO2 reduction products.

机译：通过改性的聚合物复合方法制备了层状钙钛矿型SR3Ti2O7催化剂，掺杂N，S和Fe，其特征在于使用UV可见辐射的碱性介质中的CO 2的光降低。 EDXA和XRD数据揭示掺杂剂掺入钛酸酯基质中。 XPS分析表明了XPS分析表明为S6 +和Fe作为Fe3 +物种中的n在替代和间隙位置。 DRS和照片发光研究表明，掺杂剂在带隙内形成额外的能量水平，促进电荷载体的可见光吸收和延迟重组。形态学变化和较小的微晶也最小化重组。 SR3Ti2O7的分层结构有助于容易地运输电荷载体和氧化/还原反应中心的分离。掺杂催化剂的结构，形态学和照片物理特性显着改善活性。将N，S和Fe共同掺杂在一起，显示CO 2还原产品的最大表观量子产率。

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来源
《RSC Advances》 |2015年第8期|共9页
作者
Jeyalakshmi Velu; Mahalakshmy Rajaram; Ramesh Kanaparthi; Rao Peddy V. C.; Choudary Nettem V.; Ganesh Gandham Sri; Thirunavukkarasu Kandasamy; Krishnamurthy Konda Ramasamy; Viswanathan Balasubramanian;
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Madurai Kamaraj Univ Thiagarajar Coll Dept Chem Madurai 625021 Tamil Nadu India;

Madurai Kamaraj Univ Thiagarajar Coll Dept Chem Madurai 625021 Tamil Nadu India;

Hindustan Petr Corp Ltd Corporate R&

D Ctr Bangalore 560066 Karnataka India;

Hindustan Petr Corp Ltd Corporate R&

D Ctr Bangalore 560066 Karnataka India;

Hindustan Petr Corp Ltd Corporate R&

D Ctr Bangalore 560066 Karnataka India;

Hindustan Petr Corp Ltd Corporate R&

D Ctr Bangalore 560066 Karnataka India;

Indian Inst Technol NCCR Madras 600036 Tamil Nadu India;

Indian Inst Technol NCCR Madras 600036 Tamil Nadu India;

Indian Inst Technol NCCR Madras 600036 Tamil Nadu India;

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正文语种 eng
中图分类化学;
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1. Visible light driven reduction of carbon dioxide with water on modified Sr3Ti2O7 catalysts [J] . Jeyalakshmi Velu, Mahalakshmy Rajaram, Ramesh Kanaparthi, RSC Advances . 2015,第8期

机译：可见光驱动二氧化碳用水改性SR3TI2O7催化剂
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3. Highly Active Ruthenium CNC Pincer Photocatalysts for Visible-Light-Driven Carbon Dioxide Reduction [J] . Das Sanjit, Rodrigues Roberta R., Lamb Robert W., Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 2019,第12期

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4. VISIBLE LIGHT DRIVEN REDUCTION OF CO2 BY WATER ON MODIFIED Sr3Ti2O7 [C] . Jeyalakshmi Velu, Mahalakshmy R, Ramesh Kanaparthi ACS National Meeting Exhibition . 2014

机译：可见光通过水改性SR3Ti2O7对CO2的减少减少
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Visible light driven reduction of carbon dioxide with water on modified Sr3Ti2O7 catalysts

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