Chemistry of Inorganic Materials最新文献

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Synthesis and characterization of zinc cobalt sulphide nanofilms for optoelectronic applications 用于光电应用的硫化锌钴纳米薄膜的合成与表征
Chemistry of Inorganic Materials Pub Date : 2024-09-19 DOI: 10.1016/j.cinorg.2024.100068
Joseph Onyeka Emegha , Kenneth Onyenike , Rita Omamuyovwi Jolayemi , Chioma Adaku Ejelonu , Frank Efe , Odunayo Tope Ojo
{"title":"Synthesis and characterization of zinc cobalt sulphide nanofilms for optoelectronic applications","authors":"Joseph Onyeka Emegha ,&nbsp;Kenneth Onyenike ,&nbsp;Rita Omamuyovwi Jolayemi ,&nbsp;Chioma Adaku Ejelonu ,&nbsp;Frank Efe ,&nbsp;Odunayo Tope Ojo","doi":"10.1016/j.cinorg.2024.100068","DOIUrl":"10.1016/j.cinorg.2024.100068","url":null,"abstract":"<div><div>Zinc-cobalt sulphide (<span><math><mrow><msub><mtext>Zn</mtext><mi>x</mi></msub><msub><mtext>Co</mtext><mrow><mn>1</mn><mo>−</mo><mi>x</mi></mrow></msub><mi>S</mi></mrow></math></span>) thin films were fabricated on glass substrates using the chemical bath deposition (CBD) technique. In this study, the films were grown employing solutions of zinc acetate, cobalt sulphate, and thioacetamide as the respective sources of zinc, cobalt, and sulphur. The synthesized films were investigated for their potential use in optoelectronic device applications. Optical characterization revealed that the films exhibited a direct transition with an energy gap ranging from 3.350 to 3.360 ​eV. As the zinc concentrations were changing, the absorbance of the films were decreasing uniformly along the wavelength spectra. The films exhibit a low extinction coefficient (0.0–0.23) that may be due to the internal reflections within the material as concentrations changes. Variations in the thickness, reflectance and refractive index with zinc concentrations were also discussed. The electrical resistivity was found to decrease from <span><math><mrow><mn>7.12</mn><mo>×</mo><msup><mrow><mn>10</mn><mspace></mspace></mrow><mn>8</mn></msup></mrow></math></span> to <span><math><mrow><mn>5.94</mn><mo>×</mo><msup><mn>10</mn><mn>8</mn></msup></mrow></math></span> (Ω.cm) with zinc concentrations. According to the crystallography spectrum, <span><math><mrow><msub><mtext>Zn</mtext><mi>x</mi></msub><msub><mtext>Co</mtext><mrow><mn>1</mn><mo>−</mo><mi>x</mi></mrow></msub><mi>S</mi></mrow></math></span> has a polycrystalline structure with various distinct peaks at different orientations. Scanning electron microscopy shows that surface morphology of <span><math><mrow><msub><mtext>Zn</mtext><mi>x</mi></msub><msub><mtext>Co</mtext><mrow><mn>1</mn><mo>−</mo><mi>x</mi></mrow></msub><mi>S</mi></mrow></math></span> films has a well-defined nanoparticles of different shapes and sizes which are uniformly distributed and are significantly transformed as a function of concentrations. The results demonstrate that the chemically deposited thin films can be engineered for a range of optoelectronic applications.</div></div>","PeriodicalId":100233,"journal":{"name":"Chemistry of Inorganic Materials","volume":"4 ","pages":"Article 100068"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949746924000363/pdfft?md5=a5a630a1872409ca62281bc055344976&pid=1-s2.0-S2949746924000363-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142315462","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Caesalpinia crista seed is used as an eco-friendly inhibitor to prevent the corrosion of aluminium in hydrochloric acid solutions Caesalpinia crista 种子可用作一种环保型抑制剂,防止铝在盐酸溶液中腐蚀
Chemistry of Inorganic Materials Pub Date : 2024-09-15 DOI: 10.1016/j.cinorg.2024.100067
K.C. Desai , P.S. Desai , Adarsh M. Patel , Bhumika B. Parmar
{"title":"Caesalpinia crista seed is used as an eco-friendly inhibitor to prevent the corrosion of aluminium in hydrochloric acid solutions","authors":"K.C. Desai ,&nbsp;P.S. Desai ,&nbsp;Adarsh M. Patel ,&nbsp;Bhumika B. Parmar","doi":"10.1016/j.cinorg.2024.100067","DOIUrl":"10.1016/j.cinorg.2024.100067","url":null,"abstract":"<div><p>This investigation delves into the inhibitory impact of Caesalpinia crista (Kanchaki) seed extract (CCE) on the corrosion of aluminium alloy (AA6061) at temperatures varying between 303 and 333K, employing Potentiodynamic Polarisation (PDP), Electrochemical Impedance Spectroscopy (EIS), and weight loss methodologies. Findings demonstrate that CCE extract effectively safeguards Al against corrosion, with efficacy increasing at higher concentrations. The observed inhibitory action exhibits a cathodic-type behavior across all concentrations and temperatures, aligning well with Langmuir isotherm. Notably, the highest level of inhibitory efficiency, reaching 96.87 ​%, is attained at a concentration of 2.0 ​g/L and a temperature of 303 ​K for 3 hours. Consistency is observed between the results obtained through EIS and PDP. A plausible mechanism for preventing corrosion in Al alloy is proposed. Surface analysis techniques, such as Atomic Force Microscopy (AFM) and Scanning Electron Microscopy/Energy Dispersive X-ray analysis (SEM/EDX), validate the adsorption of the inhibitor onto Al alloy surfaces. Morphological examinations corroborate electrochemical findings, confirming protection against uniform corrosion in HCl solutions. Additional analyses involve the computation of activation energy and thermodynamic parameters, with a thorough discussion of the results.</p></div>","PeriodicalId":100233,"journal":{"name":"Chemistry of Inorganic Materials","volume":"4 ","pages":"Article 100067"},"PeriodicalIF":0.0,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949746924000351/pdfft?md5=42e266a361695000baf496c78b797e06&pid=1-s2.0-S2949746924000351-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Stable decaphenylcyclopentasilane hole transport layers for double-stacked perovskite photovoltaic devices fabricated under ambient atmosphere 用于在环境气氛下制造双叠层过氧化物光伏器件的稳定的十苯基环五硅烷空穴传输层
Chemistry of Inorganic Materials Pub Date : 2024-09-12 DOI: 10.1016/j.cinorg.2024.100066
Iori Ono , Takeo Oku , Yuto Genko , Riku Okumura , Taiga Nasu , Shinichiro Mizuno , Tomoharu Tachikawa , Tomoya Hasegawa , Sakiko Fukunishi
{"title":"Stable decaphenylcyclopentasilane hole transport layers for double-stacked perovskite photovoltaic devices fabricated under ambient atmosphere","authors":"Iori Ono ,&nbsp;Takeo Oku ,&nbsp;Yuto Genko ,&nbsp;Riku Okumura ,&nbsp;Taiga Nasu ,&nbsp;Shinichiro Mizuno ,&nbsp;Tomoharu Tachikawa ,&nbsp;Tomoya Hasegawa ,&nbsp;Sakiko Fukunishi","doi":"10.1016/j.cinorg.2024.100066","DOIUrl":"10.1016/j.cinorg.2024.100066","url":null,"abstract":"<div><p>Stable decaphenylcyclopentasilane (DPPS) hole transport layers were developed for guanidinium-, formamidinium-, or ethylammonium-added double-stacked CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> perovskite photovoltaic devices without using 2,2′,7,7′-tetrakis (<em>N,N</em>-di-<em>p</em>-methoxyphenylamino)-9,9′-spirobifluorene, which is a typical hole transport layer. Stacking two types of perovskite compounds inserted within the DPPS layer enabled the fabrication of stable perovskite solar cells under ambient atmosphere at 190 ​°C, which reduced the trap density and improved the photovoltaic properties of the devices. As expected, the DPPS-inserted layers functioned as a stable hole transport layer for perovskite solar cells.</p></div>","PeriodicalId":100233,"journal":{"name":"Chemistry of Inorganic Materials","volume":"4 ","pages":"Article 100066"},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S294974692400034X/pdfft?md5=d1f35286dcdd51180b2c9f515e10c5d3&pid=1-s2.0-S294974692400034X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of silicon surfaces etched in aqueous HF-(HBr)–Br2-mixtures 分析在 HF-(HBr)-Br2 水混合物中蚀刻的硅表面
Chemistry of Inorganic Materials Pub Date : 2024-07-03 DOI: 10.1016/j.cinorg.2024.100063
Nils Schubert , André Stapf , Andreas Lißner , Niklas Zomack , Ann-Lucia Neumann , Edwin Kroke
{"title":"Analysis of silicon surfaces etched in aqueous HF-(HBr)–Br2-mixtures","authors":"Nils Schubert ,&nbsp;André Stapf ,&nbsp;Andreas Lißner ,&nbsp;Niklas Zomack ,&nbsp;Ann-Lucia Neumann ,&nbsp;Edwin Kroke","doi":"10.1016/j.cinorg.2024.100063","DOIUrl":"https://doi.org/10.1016/j.cinorg.2024.100063","url":null,"abstract":"<div><p>Solutions containing hydrofluoric acid (HF), hydrobromic acid (HBr) and bromine (Br<sub>2</sub>) were investigated as novel acidic, NO<sub>x</sub>-free mixtures for wet-chemical etching of silicon wafers. HF–Br<sub>2</sub>-mixtures exhibit isotropic etching behaviour towards silicon, etch rates up to 4.0 ​μm ​min<sup>−1</sup> were observed at room temperature, which are higher than the etch rates of commercially used alkaline solutions. HF–HBr–Br<sub>2</sub>-mixtures show anisotropic etching behaviour, texturing the surface of monocrystalline silicon wafers with random upright or random inverted pyramidal structures. Etch rates up to 2.4 ​μm ​min<sup>−1</sup> were observed, the etch rate increases linearly with the concentration of Br<sub>2</sub> in the etching solution. Silicon surfaces were investigated by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The light trapping efficiency of wafers etched by HF–HBr–Br<sub>2</sub> solutions was compared to commercially available textured wafers by UV/Vis-reflectivity measurements indicating lower reflectivities for the HF–HBr–Br<sub>2</sub>-treated samples. A reaction scheme for the anisotropic dissolution of silicon in bromine-containing aqueous HF-solutions is proposed, which involves bromine as oxidizing agent.</p></div>","PeriodicalId":100233,"journal":{"name":"Chemistry of Inorganic Materials","volume":"3 ","pages":"Article 100063"},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949746924000314/pdfft?md5=dcc161c81af98946dfff597381c2dde0&pid=1-s2.0-S2949746924000314-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141607441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced degradation of organic water pollutants using lead-free ferroelectric photocatalysts 利用无铅铁电光催化剂提高有机水污染物的降解能力
Chemistry of Inorganic Materials Pub Date : 2024-06-29 DOI: 10.1016/j.cinorg.2024.100062
Vaishali Gupta, Satyendra Singh
{"title":"Enhanced degradation of organic water pollutants using lead-free ferroelectric photocatalysts","authors":"Vaishali Gupta,&nbsp;Satyendra Singh","doi":"10.1016/j.cinorg.2024.100062","DOIUrl":"https://doi.org/10.1016/j.cinorg.2024.100062","url":null,"abstract":"<div><p>Advanced oxidation processes have attracted considerable attention for wastewater treatment, air purification, CO<sub>2</sub> reduction and many more pollution control applications. Environmentally friendly (K<sub>0.5</sub>Na<sub>0.5</sub>)NbO<sub>3</sub> (abbreviated as 'KNN') is emerging as a lead-free photocatalyst due to its good piezoelectric response and high Curie temperature. In this work, KNN photocatalysts were synthesized by two methods i.e. solid-state and sol-gel routes and abbreviated as KNN-SS and KNN-SG, respectively. X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) confirmed the orthorhombic structure for both the samples. Morphological studies were done using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Average particle size was estimated using ImageJ software which is to be around 1.38 ​μm and 278 ​nm for KNN-SS and KNN-SG samples respectively. Zeta potential measurements estimated the average surface charge on the particles i.e. 67.099 ​mV for KNN-SS and 69.115 ​mV for KNN-SG samples. Tauc’ plot was employed to find the optical bandgap, which was estimated around 3 ​eV for both the samples. Photoluminescence (PL) spectroscopy confirmed that KNN-SG sample has a lower recombination rate than KNN-SS sample as it exhibited lower emission intensity. Better photocatalytic result of 92.8 ​% degradation of methylene blue dye in just 80 ​min has been observed for KNN-SG sample, indicating smaller particle size causes delayed recombination, which enhances higher photodegradation of the material. Lead-free ferroelectric KNN samples with smaller particle sizes can be a promising candidate for these effluents.</p></div>","PeriodicalId":100233,"journal":{"name":"Chemistry of Inorganic Materials","volume":"3 ","pages":"Article 100062"},"PeriodicalIF":0.0,"publicationDate":"2024-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949746924000302/pdfft?md5=29a30a18689fb3fd94231cab82e015b4&pid=1-s2.0-S2949746924000302-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141594452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chemical polishing strategies to improve flexible perovskite solar cells based on dopant-free hole transport layers 改进基于无掺杂空穴传输层的柔性过氧化物太阳能电池的化学抛光策略
Chemistry of Inorganic Materials Pub Date : 2024-06-28 DOI: 10.1016/j.cinorg.2024.100061
Jiaqi Kong , Yuanqiong Lin , Xin Li
{"title":"Chemical polishing strategies to improve flexible perovskite solar cells based on dopant-free hole transport layers","authors":"Jiaqi Kong ,&nbsp;Yuanqiong Lin ,&nbsp;Xin Li","doi":"10.1016/j.cinorg.2024.100061","DOIUrl":"https://doi.org/10.1016/j.cinorg.2024.100061","url":null,"abstract":"<div><p>For n-i-p typed flexible perovskite solar cells (fPSCs), the doped hole transport layer significantly impacts the devices' long-term stability. Using dopant-free organic hole transport materials (d-HTMs) is promising for stable fPSCs. However, the low conductivity of d-HTMs limited their thickness, making them sensitive to the surface morphology of the perovskite film's upper surface. Here, we report a chemical polishing strategy using 1-hexyl-3-methylimidazolium acetate (HMIM∙Ac) as the polishing reagent to enhance the upper surface of the perovskite film, which could form a smooth and flat surface. Meanwhile, the treatment can reduce surface defects and smaller grains on top of the surface. Then, we deposite an ultra-thin dopant-free PM6 layer, a typical hole transport layer, on top of the polished perovskite film. The PM6 layer shows an improved face-on orientation and then carrier mobility. Moreover, suppressed non-radiative recombination at the perovskite/PM6 interface is also observed, translating into a higher open-circuit voltage and fill factor of the fPSCs. As a result, a champion power conversion efficiency (PCE) of 17.76 ​%, with an open-circuit voltage of 1.025 ​V and fill factor of 78.2 ​%, is obtained, which is one of the highest PCEs among the reported fPSCs based on d-HTMs. Our strategy demonstrates a facile but effective way of developing high-efficiency and stable fPSCs for future applications.</p></div>","PeriodicalId":100233,"journal":{"name":"Chemistry of Inorganic Materials","volume":"3 ","pages":"Article 100061"},"PeriodicalIF":0.0,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949746924000296/pdfft?md5=f9ea6df09de7737be8dae8084f4bf364&pid=1-s2.0-S2949746924000296-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141541522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural, optical, second harmonic, and mechanical studies on zinc chloride added alpha-glycine crystals 添加了 alpha-甘氨酸的氯化锌晶体的结构、光学、二次谐波和力学研究
Chemistry of Inorganic Materials Pub Date : 2024-06-28 DOI: 10.1016/j.cinorg.2024.100060
P. Justina Angelin, P. Sumithraj Premkumar
{"title":"Structural, optical, second harmonic, and mechanical studies on zinc chloride added alpha-glycine crystals","authors":"P. Justina Angelin,&nbsp;P. Sumithraj Premkumar","doi":"10.1016/j.cinorg.2024.100060","DOIUrl":"https://doi.org/10.1016/j.cinorg.2024.100060","url":null,"abstract":"<div><p>The slow evaporation solution method was employed to synthesize and crystallize zinc chloride doped α-glycine (ZCAG) single crystals. The single crystal X-ray diffraction studies of pure α-glycine single crystals revealed that the structure belong to primitive monoclinic lattice. Powder X-ray diffraction studies of ZCAG showed the well-defined sharp peaks and formation of centrosymmetric structure with space group P21/n. The increase in lattice volume of ZCAG suggested that the access of zinc chloride into the α-glycine crystal and the entry of zinc chloride to the α-glycine crystal was also established from the energy-dispersive X-ray analysis. Fourier transform infrared spectrum of ZCAG revealed that the functional groups of α-glycine was not transformed due to the introduction of zinc chloride into the lattice. The optical transparency of ZCAG was observed in the UV–visible region, and it exhibited a superior transmittance in the visible region. Energy bandgap value was determined and found to changes while increasing the dopant concentration. An emission peak was observed in the violet region from the photoluminescence spectra. The centrosymmetric ZCAG exhibited second harmonic generation efficiency of 1.44 times higher than standard potassium dihydrogen phosphate, possibly due to local non-centrosymmetry in the lattice, which is further augmented by lattice distortion induced by the dopant. Low dielectric constant and loss of the grown ZCAG crystals showed the remarkable application of non-linear optical. The Meyer index indicates that the grown ZCAG are categorized as soft materials.</p></div>","PeriodicalId":100233,"journal":{"name":"Chemistry of Inorganic Materials","volume":"3 ","pages":"Article 100060"},"PeriodicalIF":0.0,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949746924000284/pdfft?md5=8f6771cee1a30c6ab12d2fa49103adbd&pid=1-s2.0-S2949746924000284-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141541524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of morphological and particle size, structure on the physical properties of Sr doped cobalt chromite for catalysis application 形态、粒度和结构对掺锶钴铬铁矿催化应用物理性质的影响
Chemistry of Inorganic Materials Pub Date : 2024-06-21 DOI: 10.1016/j.cinorg.2024.100058
V.T. Geetha , C. Selvakumar , S. Shravan Kumar , S. Gopinath , C. Ragupathi , A. Rajendiran
{"title":"Effect of morphological and particle size, structure on the physical properties of Sr doped cobalt chromite for catalysis application","authors":"V.T. Geetha ,&nbsp;C. Selvakumar ,&nbsp;S. Shravan Kumar ,&nbsp;S. Gopinath ,&nbsp;C. Ragupathi ,&nbsp;A. Rajendiran","doi":"10.1016/j.cinorg.2024.100058","DOIUrl":"https://doi.org/10.1016/j.cinorg.2024.100058","url":null,"abstract":"<div><p>The structural, optical, morphological, and catalytic behavior of the spinel cobalt chromite nanoparticles (NPs), which were successfully synthesised using a simple co-precipitation method, are investigated in this work. First, the catalytic performance test was used to determine the ideal doping Sr and doping amounts. The as-prepared sample's face-centered cubic spinel structure is confirmed by the powder X-ray diffraction pattern, and the average crystallite size is determined to be 22–15 ​nm. The prepared material had a structure resembling nanoparticles, and the SEM analysis showed that the size attained was approximately 28–16 ​nm. TEM analysis revealed that the prepared material and sizes had a hexagonal-like structure. DRS and PL spectra were used to determine the optical absorption and photoluminescence emissions, respectively. Decolorization of 4-Nitrophenol's yellow color is another area of interest in the catalytic characteristics of CoCr<sub>2</sub>O<sub>4</sub> crystals doped with Sr. The catalysts employed were discovered to be readily recyclable and effective catalysts for the oxidation of styrene, with benzaldehyde as the end product.</p></div>","PeriodicalId":100233,"journal":{"name":"Chemistry of Inorganic Materials","volume":"3 ","pages":"Article 100058"},"PeriodicalIF":0.0,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949746924000260/pdfft?md5=8f228c5eaef8e481da099b663ce8c914&pid=1-s2.0-S2949746924000260-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141594451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nanostructured TiO2 synthesized by different methods: Relationship between TiO2 porosity and crystalline-amorphous structure 用不同方法合成的纳米结构 TiO2:二氧化钛孔隙率与晶体-非晶体结构之间的关系
Chemistry of Inorganic Materials Pub Date : 2024-06-19 DOI: 10.1016/j.cinorg.2024.100059
F. El Koulali , M. Ouzzine , L. Cano-Casanova , M.C. Román-Martínez , M.A. Lillo-Ródenas
{"title":"Nanostructured TiO2 synthesized by different methods: Relationship between TiO2 porosity and crystalline-amorphous structure","authors":"F. El Koulali ,&nbsp;M. Ouzzine ,&nbsp;L. Cano-Casanova ,&nbsp;M.C. Román-Martínez ,&nbsp;M.A. Lillo-Ródenas","doi":"10.1016/j.cinorg.2024.100059","DOIUrl":"https://doi.org/10.1016/j.cinorg.2024.100059","url":null,"abstract":"<div><p>The present manuscript focuses on important aspects regarding TiO<sub>2</sub>, which is typically used in many applications. On one hand, a thorough review of methods for synthesizing nanostructured TiO<sub>2</sub> is presented. Using these methods, and different post-synthesis heat-treatment conditions, close to thirty TiO<sub>2</sub> materials have been prepared, and their porous texture and crystalline and amorphous structure have been characterized. In this large number of samples, the porous texture characterization has revealed a high contribution of mesoporosity in a large number of the synthesized materials, being in many materials around 60–70 %. Moreover, different percentages of crystalline phases, anatase, brookite, rutile, and amorphous titania are developed depending on the TiO<sub>2</sub> preparation conditions. These fractions have been determined from X-ray diffraction data using the <em>“simple”</em> characterization method reported by Cano-Casanova et al., inspired by Jensen et al., and Bellardita et al., also exploring its limitations. This analysis has allowed assessing a linear relationship between porosity, particularly between the surface area, and the amorphous phase content in titanium dioxide. A relationship had been previously suggested in the literature, but never correlated in such a way. In summary, the present study constitutes a tool to help other researchers select the most suitable method for synthesizing nanostructured TiO<sub>2</sub> materials with target properties and, also, to characterize them, and have a very easy and straightforward estimation of TiO<sub>2</sub> amorphous phase content after the determination of their surface areas.</p></div>","PeriodicalId":100233,"journal":{"name":"Chemistry of Inorganic Materials","volume":"3 ","pages":"Article 100059"},"PeriodicalIF":0.0,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2949746924000272/pdfft?md5=80400212962f236ef84e67ddcdcc5a3d&pid=1-s2.0-S2949746924000272-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141481354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cobalt -supported [Aemim]Br ionic liquid for the catalytic suzuki-miyaura coupling reactions 用于催化铃木-宫浦偶联反应的钴支撑[Aemim]Br 离子液体
Chemistry of Inorganic Materials Pub Date : 2024-05-23 DOI: 10.1016/j.cinorg.2024.100056
Karthikeyan Parasuraman , Uthayanila Selvarasu , Venkatesan Kasi , Ramasamy Shanmugapriya
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