Assessment of Thermodynamic Properties of SrSnO3 Perovskite for Enhanced Photocatalytic Applications

IF 4.9 3区化学 Q2 POLYMER SCIENCE

Journal of Inorganic and Organometallic Polymers and Materials Pub Date : 2025-02-04 DOI:10.1007/s10904-025-03621-x

Shafia Kanwal, Ahmad K. Badawi, Asad Muhammad Khan, Rafaqat Ali Khan, Warda Shahzad, Bushra Ismail

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Abstract

Textile wastewater contains hazardous dyes, chemicals, and heavy metals that threaten ecosystems. Perovskites, known for their strong photocatalytic and adsorption capabilities, present an innovative approach to breaking down pollutants and removing toxic substances effectively. Our research studies comprised the low-cost co-precipitation synthesis and modification of Sr_1 − xMn_xSnO₃ (x = 0, 0.4, and 0.6) perovskite, with cetyltrimethylammonium bromide (CTAB) for enhanced photocatalytic activity. The decrease in lattice constants calculated by X-ray diffraction data suggests that the manganese (Mn), doping distorts the strontium stannate, lattice. Energy dispersive X-ray spectroscopy, and scanning electron micrographs, show a stoichiometric distribution of elements and a uniform morphology which are crucial to efficient photocatalytic properties. Mn doping has been proven to decrease the band gap from 3.54 to 2.7 eV, which makes the material more efficient for visible light absorption by creating extra electronic states in the band structure of SrSnO₃. These extra states may overlap and interact with previously defined valance and conduction bands, shrinking the bandgap. Hence, Sr_0.4Mn_0.6SnO₃-CTAB proved an efficient visible light active photocatalyst to show degradation efficiency of 93% against anionic methyl orange dye.

Graphical Abstract

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SrSnO3钙钛矿增强光催化应用的热力学性质评价

纺织废水中含有对生态系统构成威胁的有害染料、化学物质和重金属。钙钛矿以其强大的光催化和吸附能力而闻名，为有效分解污染物和去除有毒物质提供了一种创新的方法。我们的研究包括用十六烷基三甲基溴化铵（CTAB）低成本共沉淀法合成和改性Sr1−xMnxSnO3 （x = 0,0.4和0.6）钙钛矿，以增强光催化活性。x射线衍射数据计算出的晶格常数的下降表明，锰（Mn）掺杂使锡酸锶晶格扭曲。能量色散x射线光谱和扫描电子显微图显示了元素的化学计量分布和均匀的形态，这对有效的光催化性能至关重要。Mn掺杂已经被证明可以将带隙从3.54 eV减少到2.7 eV，这使得材料在SrSnO₃的带结构中产生额外的电子态，从而使材料更有效地吸收可见光。这些额外的态可能与先前定义的价带和导带重叠并相互作用，从而缩小带隙。因此，Sr0.4Mn0.6SnO3-CTAB是一种高效的可见光活性光催化剂，对阴离子甲基橙染料的降解效率达到93%。图形抽象

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来源期刊

Journal of Inorganic and Organometallic Polymers and Materials 化学-高分子科学

CiteScore

8.30

自引率

7.50%

发文量

335

审稿时长

1.8 months

期刊介绍： Journal of Inorganic and Organometallic Polymers and Materials [JIOP or JIOPM] is a comprehensive resource for reports on the latest theoretical and experimental research. This bimonthly journal encompasses a broad range of synthetic and natural substances which contain main group, transition, and inner transition elements. The publication includes fully peer-reviewed original papers and shorter communications, as well as topical review papers that address the synthesis, characterization, evaluation, and phenomena of inorganic and organometallic polymers, materials, and supramolecular systems.