{"title":"Synthesis, structure and properties of substituted cobalt chalcogenides Co7(Se,Te)8","authors":"D.F. Akramov , N.V. Selezneva , E.M. Sherokalova , D.K. Kuznetsov , V.A. Kazantsev , N.V. Baranov","doi":"10.1016/j.progsolidstchem.2025.100548","DOIUrl":"10.1016/j.progsolidstchem.2025.100548","url":null,"abstract":"<div><div>For the first time, polycrystalline samples of Co<sub>7</sub>(Se<sub>1–<em>y</em></sub>Te<sub><em>y</em></sub>)<sub>8</sub> were synthesized in the entire concentration range (0 ≤ <em>y</em> ≤ 1) and studied by X-ray diffraction, scanning electron microscopy, and by thermal expansion, specific heat capacity and electrical resistivity measurements. Depending on the concentration of tellurium, the solid-phase reaction method (at <em>y</em> < 0.9) and melting method (at <em>y</em> ≥ 0.9) were used to obtain single-phase samples. A change in the crystal structure (<em>P</em>3<sub>1</sub>21 → <em>P</em>-3<em>m</em>1 → <em>P</em>6<sub>3</sub>/<em>mmc</em> → <em>P</em>-3<em>m</em>1) due to the disordering of vacancies, significant anisotropy of the thermal atomic displacement, and anisotropic lattice expansion have been observed in this system when selenium is substituted with tellurium. According to specific heat measurements, an increase in tellurium concentration is accompanied by a decrease in the electronic specific heat coefficient, which indicates an increase in the metallicity of the system and is confirmed by electrical resistivity data. In substituted compounds using thermal expansion and temperature-dependent X-ray diffraction, spinodal decomposition of samples was detected upon heating. The second phase in dendritic form was observed using scanning electron microscopy on the surface of slowly cooled tellurium-rich sample.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100548"},"PeriodicalIF":10.5,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Temperature-induced structural phase transitions in inorganic compounds: symmetry and information-entropy analysis","authors":"Sergey V. Krivovichev","doi":"10.1016/j.progsolidstchem.2025.100547","DOIUrl":"10.1016/j.progsolidstchem.2025.100547","url":null,"abstract":"<div><div>The tendency of crystal-structure symmetry increasing under increasing temperature (also known as a ‘Landau rule’) is one of the major empirical observations with regard to the temperature-induced phase transitions. The validity of the rule was investigated by means of the statistical analysis of the 502 temperature-driven phase transitions in inorganic compounds with known crystal-structure information for all polymorphs. The analysis was performed from the viewpoint of symmetry considerations (that is, the analysis in terms of the crystal-system hierarchy, where cubic system is the highest and triclinic is the lowest) and information-entropy calculations. It was revealed that the information-based structural complexity parameters (most importantly, the total information content per reduced unit cell) are more sensitive structural symmetry indicators than the symmetry classification in terms of the crystal-system hierarchy. The information-entropy measures decrease under increasing temperature in more than 77 % of phase transitions under consideration, which corresponds to the overall rise of symmetry under heating (the ‘Landau rule’). In contrast, the simple symmetry analysis confirms the ‘Landau rule’ in 60 % of cases only. The information-based parameters are especially efficient for the cases, when crystal system does not change (most numerous are monoclinic-monoclinic and orthorhombic-orthorhombic transitions). The deviations from the rule of increasing symmetry correspond to: phase transition sequences with intermediate (transitional) structures of high complexity, isosymmetric and reentrant phase transitions, and transitions that involve low-temperature metastable polymorphs. There are some exceptions that cannot be assigned to any of the phase-transition types mentioned above, where symmetry is decreasing under heating. The symmetry breaking results in the decrease in vibrational entropy, which may be considered as a major driving force behind the ‘Landau rule’. However, various phenomena such as formation and breaking of bonds, charge and orbital ordering, stereoactive activity of lone electron pairs, etc., may seriously influence polymorphic transformations under temperature changes.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100547"},"PeriodicalIF":10.5,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ehtisham Umar , Fozia Shaheen , M. Waqas Iqbal , Mohammed T. Alotaibi , Amel Ayari-Akkari , Ali Akremi , Eman Kashita
{"title":"Plate-like NiCo2O4 integrated with g-C3N4 nanostructures for hybrid supercapacitors and green energy technologies","authors":"Ehtisham Umar , Fozia Shaheen , M. Waqas Iqbal , Mohammed T. Alotaibi , Amel Ayari-Akkari , Ali Akremi , Eman Kashita","doi":"10.1016/j.progsolidstchem.2025.100546","DOIUrl":"10.1016/j.progsolidstchem.2025.100546","url":null,"abstract":"<div><div>The development of nanostructured electrode materials for supercapacitors and green energy applications remains a challenging task, particularly in achieving maximum surface area for optimal electrode-electrolyte interaction. In this study, we synthesize interconnected nanostructured NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> using a cost-effective hydrothermal method. The NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> nanocomposite undergoes comprehensive characterization to analyze its structural, morphological, and electrochemical properties using various techniques. Electrodes fabricated from the NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> material exhibit a high specific capacity (Qs) of 203 C/g. Additionally, the as-fabricated asymmetric supercapacitor (ASC) achieves a remarkable energy density (Ed) of 87.3 Wh/kg and a power density (Pd) of 1038 W/kg at 1.4 A/g, with superior cycling performance, retaining 95.04 % of its capacity after 10,000 cycles. Furthermore, we evaluate the modified NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> electrodes for their electrocatalytic performance in the oxygen evolution reaction (OER), and hydrogen evolution reaction (HER). The results indicate that the NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> electrode exhibits the best OER performance (overpotential (<em>η</em>) = 287 mV and Tafel slope = 121 mV/dec at 10 mA/cm<sup>2</sup>) and demonstrates excellent HER activity (<em>η</em> = 336 mV and Tafel slope = 93 mV/dec at −10 mA/cm<sup>2</sup>) with exceptional cyclic stability. This research highlights the potential of NiCo<sub>2</sub>O<sub>4</sub>/g-C<sub>3</sub>N<sub>4</sub> as a promising material for supercapacitor and green energy technology.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100546"},"PeriodicalIF":10.5,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Defei Li, Ming-Chun Zhao, Tong Yuan, Ke Cui, Fuqin Zhang
{"title":"Insight into Bi-Sb alloys and their chalcogenide compounds for sodium/potassium ion battery (SIB/PIB) anodes","authors":"Defei Li, Ming-Chun Zhao, Tong Yuan, Ke Cui, Fuqin Zhang","doi":"10.1016/j.progsolidstchem.2025.100545","DOIUrl":"10.1016/j.progsolidstchem.2025.100545","url":null,"abstract":"<div><div>Sodium/potassium ion batteries (SIBs/PIBs), emerging as promising alternatives to lithium-ion batteries (LIBs), show great potential in large-scale electrical energy storage systems owing to their abundant reserves, potential cost advantages, and low standard redox potentials. In recent years, Bi-Sb alloys and their chalcogenide compounds (sulfides, selenides, and tellurides) have garnered significant attention due to their unique bimetallic synergistic effects and tunable energy storage mechanisms. This paper reviews the recent progress in Bi-Sb alloys and their chalcogenide compounds as anode materials for SIBs and PIBs. Highlighting the synergistic effects of Bi-Sb systems, the study emphasizes their high theoretical capacity, reduced volume expansion, and enhanced structural stability compared to monometallic counterparts. Key strategies such as nano-structuring (e.g., nanoporous and 2D layered architectures), composite engineering (e.g., carbon-based matrices), and heterostructure design are discussed to address challenges like electrode pulverization. The electrochemical mechanisms, including multi-step alloying and conversion reactions, are analyzed to elucidate performance enhancements in terms of cycling stability, rate capability, and capacity retention. Specifically, the paper examines the structural properties, modification strategies, and performance optimization mechanisms of these materials, and identifies key pathways for their engineering applications, aiming to provide theoretical support and technological references for designing high-capacity anode materials for SIBs/PIBs. Additionally, critical issues, challenges, and prospects for further development are suggested. This work provides critical insights into material design principles and offers pathways for developing next-generation, cost-effective energy storage technologies.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"80 ","pages":"Article 100545"},"PeriodicalIF":10.5,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cation substitution enabled electron rearrangement in high-entropy perovskite oxides for enhanced supercapacitor performance","authors":"Xiaoying Hu, Bo Wang, Xiaotong Zhou, Junzhi Li","doi":"10.1016/j.progsolidstchem.2025.100536","DOIUrl":"10.1016/j.progsolidstchem.2025.100536","url":null,"abstract":"<div><div>The controllable synthesis of high-entropy perovskite oxides and the modulation of their electronic structures are crucial for enhancing the electrochemical performance of supercapacitors. However, it remains challenging to regulate the electronic configuration of B-site elements via A-site doping. In this study, we have reconstructed the electron configuration of B-site elements in high-entropy perovskites through Sm doping, and obtained high-entropy perovskite oxides La<sub>1-x</sub>Sm<sub>x</sub> (Mn<sub>0·2</sub>Fe<sub>0·2</sub>Co<sub>0·2</sub>Ni<sub>0·2</sub>Cr<sub>0.2</sub>)O<sub>3</sub> (LaSmTMO<sub>3</sub>−x) with abundant valence states. The fabricated LaSmTMO<sub>3</sub>−0.2 exhibits high specific capacitance of 1367.3 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>. Besides, the asymmetric supercapacitor (ASC) based on LaSmTMO<sub>3</sub>−0.2 exhibits an impressive energy density of 41.2 Wh kg<sup>−1</sup> at a power density of 400 W kg<sup>−1</sup>, with a specific capacity retention of 87.1 % after 10000 cycles. The experimental results demonstrate that superior supercapacitor performance can be attributed to electron rearrangement induced by Sm doping, leading to the formation of active metal species with multiple oxidation states. Simultaneously, Sm doping significantly improves structural integrity, electronic conductivity, and ion transfer kinetics. This work emphasizes the importance of A-site regulation of high entropy perovskite oxides for improving electrochemical performance and provides A new direction for the design of perovskite oxides in energy storage and conversion systems.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"79 ","pages":"Article 100536"},"PeriodicalIF":9.1,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144513655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Recent advance in preparation, applications and color regulation mechanism of cobalt blue pigment","authors":"Hao Yang , Bin Mu , Anjie Zhang , Aiqin Wang","doi":"10.1016/j.progsolidstchem.2025.100535","DOIUrl":"10.1016/j.progsolidstchem.2025.100535","url":null,"abstract":"<div><div>Cobalt blue (CoAl<sub>2</sub>O<sub>4</sub>) pigment is a well-known high-end blue inorganic pigment with a spinel structure, and it is irreplaceable in the blue pigments either inorganic or organic ones due to its strong coloring performance, desirable blue chroma, and excellent chemical stability. Therefore, a series of strategies have been developed for the preparation of CoAl<sub>2</sub>O<sub>4</sub> pigment including common solid-phase method, liquid-phase and gas-phase technologies to meet the requirements of different application fields. However, the relevant applications of CoAl<sub>2</sub>O<sub>4</sub> pigment are restricted at a certain degree due to the high cost derived from the scarcity of cobalt sources as well as the aggregation of CoAl<sub>2</sub>O<sub>4</sub> particles during the high-temperature crystallization process. Interestingly, incorporation of stable inorganic substrates facilitates the decrease in the production cost and the control of the size and blue intensity of CoAl<sub>2</sub>O<sub>4</sub> nanoparticles, especially incorporation of natural or waste nonmetallic mineral resources. Therefore, this review provides an overview of the recent advance in the synthesis, relevant applications and color regulation mechanism of CoAl<sub>2</sub>O<sub>4</sub> pigment combining with the literatures and our research achievements. It is mainly focused on the synthesis mechanism of different methods, and the relationships between the structures and the application performances, especially the structural composition and color performance of the designed CoAl<sub>2</sub>O<sub>4</sub>/silicate hybrid pigments. Finally, several suggestions are proposed for the future development trend on CoAl<sub>2</sub>O<sub>4</sub> pigment and even other eco-friendly inorganic pigments.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"79 ","pages":"Article 100535"},"PeriodicalIF":9.1,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Quaternary transition metal dichalcogenides (M1-xNxX2(1-y)Y2y) for hydrogen evolution: A review on atomic structure, 3D engineering, and electrocatalytic performance","authors":"Rohit Kumar , Rajni Thakur , Sahil Kumar , Shwetharani R , Bhari Mallana Nagaraja , Sunil Mehla , Itika Kainthla","doi":"10.1016/j.progsolidstchem.2025.100532","DOIUrl":"10.1016/j.progsolidstchem.2025.100532","url":null,"abstract":"<div><div>Hydrogen is a clean, efficient, and sustainable alternative to fossil fuels, placing it at the forefront of our energy future. Water electrolysis is more sustainable and eco-friendlier alternative to fossil fuel-based hydrogen production processes. The earth abundance, low cost, high electrocatalytic activities, and stabilities of transition metal dichalcogenides (TMDs) in the hydrogen evolution reaction (HER) set them apart as exceptional electrocatalysts for hydrogen production. Quaternary TMDs have a general formula of M<sub>1-x</sub>N<sub>x</sub>X<sub>2(1-y)</sub>Y<sub>2y</sub>, where M and N are transition metals and X and Y are chalcogens. Thus, quaternary TMDs are versatile nanomaterials that exhibit tremendous potential for fine-tuning and optimizing their electrocatalytic performance through composition modulation, as shown by both theoretical and experimental studies. Additionally, additive manufacturing techniques such as 3D printing are emerging as powerful tools for fabricating structurally complex, compositionally tunable TMD-based electrodes with enhanced HER performance. The integration of 3D printing with advanced TMD synthesis methods enables the design of customized electrocatalysts, offering improved charge transport and catalytic activity for sustainable hydrogen production. To delve deeper into the composition-structure-activity relationships that govern the hydrogen evolution performance of quaternary TMDs, this review encapsulates a comprehensive account of the synthesis methods, atomic and electronic structures, properties, and electrocatalytic performance of quaternary TMDs. Furthermore, the unique challenges in using quaternary TMD electrocatalysts and the authors' perspective on their future potential in hydrogen production are elaborated.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"79 ","pages":"Article 100532"},"PeriodicalIF":9.1,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144230023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Rare earth doped Zirconia: Structure, physicochemical properties and recent advancements in technological applications","authors":"S. Kalaivani, M. Ezhilan, M. Deepa, S. Kannan","doi":"10.1016/j.progsolidstchem.2025.100524","DOIUrl":"10.1016/j.progsolidstchem.2025.100524","url":null,"abstract":"<div><div>Zirconia (ZrO<sub>2</sub>) based ceramics have been pivotal in the evolution of materials across various applications. Particularly, rare earth (RE) doped ZrO<sub>2</sub> is of greater interest due to its remarkable thermal stability, mechanical strength, and ionic conductivity, which are primarily influenced by its distinct solid state properties. This review aims to deliver a comprehensive analysis of the structural features induced by RE doping, with a particular emphasis on the phase transitions and stability of the various polymorphs of ZrO<sub>2</sub>. The relationship between the ionic size of RE, oxygen vacancies and microstructural behavior is explored in the context of lattice distortion and thermodynamic stabilization. The review highlights the critical role of doping strategies in the varying microstructure and enhancing the performance of ZrO<sub>2</sub> based materials. Emerging applications such as solid oxide fuel cells, thermal barrier coatings, bioceramics and optical devices necessitate a comprehensive understanding of fundamental solid state properties to ensure their effective operation. Additionally, future research directions are suggested to facilitate the development of next generation ZrO<sub>2</sub> based systems, with a focus on enhancing their structural and functional performance.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"79 ","pages":"Article 100524"},"PeriodicalIF":9.1,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Iftikhar Hussain , Karanpal Singh , Avinash C. Mendhe , Mohammad R. Thalji , Soumen Mandal , Ijaz Ali , Ahmed F.M. EL-Mahdy , P. Rosaiah , Muhammad Kashif Aslam , Tensangmu Lama Tamang , Kaili Zhang
{"title":"Integration of non-Ti3C2 MXene with carbon-based materials for energy storage devices: Recent advancements and future aspects","authors":"Iftikhar Hussain , Karanpal Singh , Avinash C. Mendhe , Mohammad R. Thalji , Soumen Mandal , Ijaz Ali , Ahmed F.M. EL-Mahdy , P. Rosaiah , Muhammad Kashif Aslam , Tensangmu Lama Tamang , Kaili Zhang","doi":"10.1016/j.progsolidstchem.2025.100523","DOIUrl":"10.1016/j.progsolidstchem.2025.100523","url":null,"abstract":"<div><div>MXenes find practical use in electrochemical systems, particularly in energy storage devices like supercapacitors and batteries. Notably, Ti<sub>3</sub>C<sub>2</sub> MXene has been extensively studied, but also non-Ti<sub>3</sub>C<sub>2</sub> MXene materials have shown promising properties in energy storage applications. Non-Ti<sub>3</sub>C<sub>2</sub> MXenes, when combined with carbonaceous materials like activated carbon, carbon nanotubes, graphene, etc. exhibit superior specific capacitance, excellent rate capability, and higher electrical conductivity, making them attractive for supercapacitors and batteries. Herein, the incorporation of non-Ti<sub>3</sub>C<sub>2</sub> MXenes with various carbon materials in energy storage systems has been discussed, showing potential for enhancing the overall electrochemical performance. Strategies to enhance the interaction between non-Ti<sub>3</sub>C<sub>2</sub> MXenes and carbon materials have been summarized to tackle challenges and capitalize on opportunities for more efficient and sustainable energy storage technologies.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"78 ","pages":"Article 100523"},"PeriodicalIF":9.1,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhiwei Wang , Yinan Shen , Liangsheng Tian , Suwit Suthirakun , Wongsathorn Kaewraung , Qi Menghang , Hang Zhao , Xin Xin , Ruoxiu Xiao , Peng Jiang , Qu Li , Tingting Lu
{"title":"Study on novel blue-purple high-NIR reflectance pigments and acrylic coatings based on Ca2Zn1-xMxSi2O7 (M = Mn and Ni)","authors":"Zhiwei Wang , Yinan Shen , Liangsheng Tian , Suwit Suthirakun , Wongsathorn Kaewraung , Qi Menghang , Hang Zhao , Xin Xin , Ruoxiu Xiao , Peng Jiang , Qu Li , Tingting Lu","doi":"10.1016/j.progsolidstchem.2025.100522","DOIUrl":"10.1016/j.progsolidstchem.2025.100522","url":null,"abstract":"<div><div>The coating optimized with high near-infrared reflectance pigments can effectively reduce the energy consumption for heating and cooling in buildings, thereby alleviating the pressure on global energy consumption. Using a high-temperature solid-state method, blue-violet pigments with high near-infrared reflectance, Ca<sub>2</sub>Zn<sub>1-<em>x</em></sub>M<sub><em>x</em></sub>Si<sub>2</sub>O<sub>7</sub> (M = Mn, 0 ≤ <em>x</em> ≤ 0.4 and Ni, 0 ≤ <em>x</em> ≤ 0.2) solid solutions, were synthesized for the first time, with a maximum solar reflectance of 82.67%. Using XPS analysis, it was determined that the oxidation state of Ni in the pigment is +2, while Mn exists in mixed oxidation states of +2 and +3. UV-VIS-NIR spectroscopy analysis indicates that the blue-violet color of the pigment originates from the <em>d-d</em> transitions of the transition metal ions. As the doping concentration increases, the near-infrared reflectance of the pigment decreases. The DFT calculations have also confirmed that the color of pigments originates from transition metal ions. The as-synthesized pigments were incorporated into acrylic to create colored coatings. Improving the near-infrared solar reflectance of the acrylic coating. The excellent high near-infrared solar reflectance and coating property optimization make the synthesized pigment a potential energy-saving coating.</div></div>","PeriodicalId":415,"journal":{"name":"Progress in Solid State Chemistry","volume":"78 ","pages":"Article 100522"},"PeriodicalIF":9.1,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}