{"title":"Magnetically separable Bi2O2CO3/MIL-101(Fe)/CoFe2O4 nanostructured catalysts for heterogeneous reductive remediation of nitrophenols and organic dyes","authors":"Nasrin Rahnama , Saeed Farhadi , Farzaneh Mahmoudi","doi":"10.1016/j.materresbull.2024.113133","DOIUrl":"10.1016/j.materresbull.2024.113133","url":null,"abstract":"<div><div>A new magnetically separable nanocomposite, Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub>/MIL-101(Fe)/CoFe<sub>2</sub>O<sub>4</sub>, was successfully synthesized through a hydrothermal method. The composite was characterized through various analytical techniques. The nanocomposite demonstrated good catalytic efficiency in reducing nitroaromatic compounds and organic dyes by using NaBH<sub>4</sub> reducing agent in aqueous solutions at room temperature. The apparent rate constant (k<sub>app</sub>) values for 4-nitrophenol, 2-nitrophenol, 2-nitroaniline, and 4-nitroaniline were recorded at 0.457, 0.253, 1.52, and 0.564 min⁻¹, respectively, achieving complete conversion in just 2 to 9 min. Under similar conditions, methylene blue, methyl orange, rhodamine B, congo red, and crystal violet organic dyes were reduced to 98–100 % within 4 to 20 min, with k<sub>app</sub> values ranging from 0.157 to 0.885 min⁻¹. Furthermore, the influence of catalyst dosage, NaBH<sub>4</sub> concentration, and substrate concentration on the reduction process was examined. Importantly, the nanocomposite can be recovered using an external magnet and reused over four consecutive cycles without a significant reduction in catalytic efficiency.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113133"},"PeriodicalIF":5.3,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Coral-like Co-doped ZnO nanostructures for enhanced triethylamine detection","authors":"Xingtai Chen , Tao Liu , Xi-Tao Yin , Jingkun Yu","doi":"10.1016/j.materresbull.2024.113131","DOIUrl":"10.1016/j.materresbull.2024.113131","url":null,"abstract":"<div><div>In this work, coral-like Co-doped ZnO nanostructures were obtained using simple precipitation and hydrothermal methods. Co-doping reduced the composite particle size to 20 nm, and the controlled growth direction formed a larger adsorption area. The gas sensor results suggest that the maximum response to triethylamine at 200 °C was achieved at 5 mol% doping content. The sensor also performed well for the 30-day stability test, displaying excellent selectivity and repeatability. Besides, 5CZO showed a response-recovery time of 52/70 s and a good response to different gas concentrations. The doping mechanism for the improved gas sensing performance with triethylamine was thoroughly investigated.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113131"},"PeriodicalIF":5.3,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhao Mu , Hao Chen , Xiao Feng , Tengfeng Xie , Dejun Wang , Yanhong Lin
{"title":"Improved photocatalytic activation of PMS using Co-doped g-C3N4 composites for effective degradation of tetracycline: Catalyst performance, photogenerated carrier transfer and degradation mechanism","authors":"Zhao Mu , Hao Chen , Xiao Feng , Tengfeng Xie , Dejun Wang , Yanhong Lin","doi":"10.1016/j.materresbull.2024.113132","DOIUrl":"10.1016/j.materresbull.2024.113132","url":null,"abstract":"<div><div>Photocatalytic coupled SO<sub>4</sub><sup>•-</sup> based advanced oxidation processes (SR-AOPs) are considered as an advanced wastewater treatment technology for degrading pollutants. In this work, Co-doped g-C<sub>3</sub>N<sub>4</sub> (CCN) photocatalysts were successfully designed for activation of permonosulfate (PMS) under visible light to efficiently degrade tetracycline (TC). The CCN photocatalyst exhibited enhanced degradation efficiency, removing 95.9 % of TC within 20 min, with a much higher degradation rate constant (0.1354 min<sup>-1</sup>) than that of the photocatalytic system (0.0090 min<sup>-1</sup>) and the SR-AOPs system (0.0538 min<sup>-1</sup>). The separation and transport properties of photogenerated carriers were probed with the assistance of measurements including surface photovoltage and photoluminescence. The results showed that the introduction of Co promoted the effective separation of photogenerated charges in CCN, which accelerated the Co<sup>3+/2+</sup> cycle and realized the efficient activation of PMS. Overall, this study provides a new strategy for the development of efficient photocatalytic activation of PMS for rapid degradation of organic pollutants.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113132"},"PeriodicalIF":5.3,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuhui Wan, Jiachen Song, Fulin Cao, Fuxue Yan, Han Zhao, Xu Lu, Shu Yang, Yonggui Shi, Pengrong Ren
{"title":"Dielectric properties of low-temperature co-fired capacitor ceramics and MLCC devices with Ag inner electrodes","authors":"Yuhui Wan, Jiachen Song, Fulin Cao, Fuxue Yan, Han Zhao, Xu Lu, Shu Yang, Yonggui Shi, Pengrong Ren","doi":"10.1016/j.materresbull.2024.113130","DOIUrl":"10.1016/j.materresbull.2024.113130","url":null,"abstract":"<div><div>Low-temperature sintered 0.99((1−<em>x</em>)Bi<sub>0.5</sub>Na<sub>0.5</sub>TiO<sub>3</sub>-xNaNbO<sub>3</sub>)-0.01Sr<sub>0.8</sub>Na<sub>0.4</sub>Nb<sub>2</sub>O<sub>6</sub> (100xNN, <em>x</em> = 0.25 and 0.30) ceramics and MLCC were successfully prepared, and the dielectric properties were systematically investigated. The dielectric permittivity at 25 °C (<em>ε</em>′<sub>25</sub> °<sub>C</sub>) of 25NN ceramic is 1088, and the dielectric variation is small between −88 °C and 400 °C (|△<em>ε</em>′/<em>ε</em>′<sub>25</sub> °<sub>C</sub>| ≤ 15%, △<em>ε</em>′=<em>ε</em>′-<em>ε</em>′<sub>25</sub> °<sub>C</sub>). The dielectric loss tangent (<em>tanδ</em>) of 25NN ceramic is less than 0.02 between -65 °C and 358 °C. The MLCC with 25NN ceramic dielectrics and Ag inner electrode also has excellent dielectric stability, of which |△<em>ε</em>′/<em>ε</em>′<sub>25</sub> °<sub>C</sub>| is less than 15 % between −100 °C and 400 °C, and the dielectric loss is less than 0.02 between −88 °C and 373 °C. All these results indicate that the low-temperature sintered MLCC with Ag inner electrodes is a promising capacitor in automobile engines and aerospace fields, where the usage temperature is often above 300 °C.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113130"},"PeriodicalIF":5.3,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422407","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liliia N. Dvoretckaia , Vladimir V. Fedorov , Alexander Pavlov , Sergey D. Komarov , Eduard I. Moiseev , Dmitry V. Miniv , Andrey K. Kaveev , Aliaksandr G. Smirnov , Demid A. Kirilenko , Alexey M. Mozharov , Ivan S. Mukhin
{"title":"Selective area epitaxy of gallium phosphide-based nanostructures on microsphere lithography-patterned Si wafers for visible light optoelectronics","authors":"Liliia N. Dvoretckaia , Vladimir V. Fedorov , Alexander Pavlov , Sergey D. Komarov , Eduard I. Moiseev , Dmitry V. Miniv , Andrey K. Kaveev , Aliaksandr G. Smirnov , Demid A. Kirilenko , Alexey M. Mozharov , Ivan S. Mukhin","doi":"10.1016/j.materresbull.2024.113126","DOIUrl":"10.1016/j.materresbull.2024.113126","url":null,"abstract":"<div><div>In this study, we present the selective area plasma-assisted molecular beam epitaxial growth of GaP-based nanoheterostructures (nanostubs), incorporating direct bandgap GaAsP or GaPN segments, on patterned SiO<sub>2</sub>/Si(001) wafers. A microsphere optical lithography and anisotropic Si wet-etching techniques were employed for wafer-scale surface patterning through SiO<sub>2</sub> growth mask, allowing to obtain either planar or pyramidal pit nucleation site morphologies. X-ray diffraction reciprocal space mapping and Raman microspectroscopy studies confirm compositional homogeneity of the nanostub arrays. The dilute nitride nanostubs display the narrowest and most intense visible red photoluminescence response at room temperature, which is an order of magnitude higher compared to the GaAsP ones. The formation of the nitrogen sub-band in GaPN alloy was confirmed in the framework of density functional theory, providing insights for interpreting the experimental results. These findings demonstrate the feasibility of the proposed approach for fabricating the ordered arrays of nanoscale visible light emitters on silicon.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113126"},"PeriodicalIF":5.3,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A critical review focussing on the synthesis and applications of monoclinic yttrium oxide nanophosphor","authors":"Soorya G Nath , Anila E I","doi":"10.1016/j.materresbull.2024.113128","DOIUrl":"10.1016/j.materresbull.2024.113128","url":null,"abstract":"<div><div>Research on monoclinic Y<sub>2</sub>O<sub>3</sub> has been limited, not because of a lack of potential applications, but rather due to challenges associated with synthesizing phase-pure material. The limited understanding of the material and its properties has hindered researchers from further exploring this compound. Some studies suggest that the B-type polymorph of Y<sub>2</sub>O<sub>3</sub> exhibits superior performance compared to its cubic counterpart. Additionally, there are reports indicating the existence of simple synthesis techniques that could potentially overcome the material's significant disadvantage highlighted by many researchers, namely, complex synthesis routes. To date, no comprehensive reports have summarized the key findings related to B-type Y<sub>2</sub>O<sub>3</sub>. In this effort, we aim to provide an exhaustive overview of research conducted on this polymorph. This includes an examination of diverse synthesis techniques employed by researchers, theoretical studies conducted on the material, an exploration of its luminescence properties, and an overview of various applications studied thus far.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113128"},"PeriodicalIF":5.3,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R.S. Pedanekar , S.V. Mohite , N.A. Narewadikar , S.B. Madake , Y. Kim , S.J. Kim , S.M. Jokare , K.Y. Rajpure
{"title":"Photoelectrocatalytic degradation of organic contaminants by spray coated Z-scheme TiO2/Bi2WO6 heterostructure electrode under solar light","authors":"R.S. Pedanekar , S.V. Mohite , N.A. Narewadikar , S.B. Madake , Y. Kim , S.J. Kim , S.M. Jokare , K.Y. Rajpure","doi":"10.1016/j.materresbull.2024.113127","DOIUrl":"10.1016/j.materresbull.2024.113127","url":null,"abstract":"<div><div>This study demonstrates that spray deposited layered TiO<sub>2</sub>/Bi<sub>2</sub>WO<sub>6</sub> heterostructure photoelectrodes exhibit strong interfacial interactions, leading to significant enhancements in photoelectrochemical performance. Time-resolved photoluminescence (TRPL) spectra indicated a prolonged lifetime of photoinduced carriers. The red shift in the absorption edge of TiO<sub>2</sub>/Bi<sub>2</sub>WO<sub>6</sub> improved the visible light harvesting capability of Bi<sub>2</sub>WO<sub>6</sub>. Nyquist plots showed effective charge separation, and the TiO<sub>2</sub> layer at the bottom significantly influenced the flat band potential compared to pristine Bi<sub>2</sub>WO<sub>6</sub>, as evidenced by Mott-Schottky analysis. This configuration improved the separation of photogenerated charge carriers via a Z-scheme charge transfer mechanism. The TiO<sub>2</sub>/Bi<sub>2</sub>WO<sub>6</sub> electrode demonstrated a higher efficiency of 94% for methylene blue degradation within 160 min, compared to pure Bi<sub>2</sub>WO<sub>6</sub>. Quenching experiments confirmed the Z-scheme charge transfer mechanism in the coupled TiO<sub>2</sub>/Bi<sub>2</sub>WO<sub>6</sub> heterojunction during degradation reactions. This study highlights the benefits of semiconductor coupling with different band potentials, promoting large-scale applications of solar-driven TiO<sub>2</sub>/Bi<sub>2</sub>WO<sub>6</sub> photoelectrodes for environmental remediation.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113127"},"PeriodicalIF":5.3,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daoyong Lin , Zhifu Liu , Da Li , Jinjun Zhao , Yue Liu , Lei Cao , Guanxiang Ma , Wei Zhao
{"title":"Optimized and nonTi-site doped synthesis of lithium titanate by mechanochemical method","authors":"Daoyong Lin , Zhifu Liu , Da Li , Jinjun Zhao , Yue Liu , Lei Cao , Guanxiang Ma , Wei Zhao","doi":"10.1016/j.materresbull.2024.113124","DOIUrl":"10.1016/j.materresbull.2024.113124","url":null,"abstract":"<div><div>The Li<sub>2</sub>CO<sub>3</sub>-ammonia-ballmilling synthesis system of Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> (LTO) was optimized and doped Li and O by theirs adjacent elements Mg and F respectively. By adjusting <strong>the ballmilling parameter</strong>, the distribution of Li and Ti sources, the hydrolysis rate and <strong>different nucleophilic / electrophilic hydrolysis path of Ti</strong>, and the interaction between Li and Ti species can be effectively controlled. The temperature programmed calcination is beneficial to the formation of the middle state (Li<sub>2</sub>TiO<sub>3</sub>), obtaining the high quality LTO. Mg and F doping can further optimize the hydrolysis and condensation degree of Ti source, the number of crystal nucleus and the particle size. Therefore, the initial first discharged capability of Mg doped LTO and F doped LTO reach to 152.4 mAh/g and 163.1 mAh/g at 5 C respectively, corresponding 32.4 % and 41.7 % enhancing compared to LTO (115.1 mAh/g). Moreover, the discharge voltage of LTO-Mg decreases from 1.5 V to 1.3 V.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113124"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cristina Silva , Irina Borbáth , Erzsébet Dodony , Dániel Olasz , György Sáfrán , Ágnes Szegedi , Kristóf Zelenka , András Tompos , Zoltán Pászti
{"title":"Stability enhancement of molybdenum modified rutile – carbon composite supported platinum electrocatalysts by reductive pretreatment: Surface characteristics and advanced electrocatalytic properties","authors":"Cristina Silva , Irina Borbáth , Erzsébet Dodony , Dániel Olasz , György Sáfrán , Ágnes Szegedi , Kristóf Zelenka , András Tompos , Zoltán Pászti","doi":"10.1016/j.materresbull.2024.113114","DOIUrl":"10.1016/j.materresbull.2024.113114","url":null,"abstract":"<div><div>Development of strong metal-support interaction (SMSI) and its influence on the catalytic performance of the Pt/Ti<sub>0.8</sub>Mo<sub>0.2</sub>O<sub>2</sub>-C system, a representative of the mixed oxide-carbon composite supported Pt electrocatalyst family, were investigated. Structural, surface chemical and electrochemical properties of the <em>as-prepared</em> Pt/Ti<sub>0.8</sub>Mo<sub>0.2</sub>O<sub>2</sub>-C catalyst and its counterparts reduced in the 150–450 °C temperature range were compared. TEM elemental mapping confirmed the widespread formation of Pt-oxide-C triple junctions in all catalysts. XPS revealed electronic interaction between the Pt particles and the oxide both in the <em>as-prepared</em> and the reduced catalysts, moreover, demonstrated that transport of Mo to the surface of Pt is initiated by reduction in the 150–250 °C range. Electrochemical measurements pointed out the durability of these Pt-bound Mo species, which also enhance the oxygen reduction activity of the catalyst. Based on the results of 10,000-cycle stability tests, reductive pretreatment between 250–350 °C is recommended for enhancing the properties of Pt/Ti<sub>0.8</sub>Mo<sub>0.2</sub>O<sub>2</sub>-C catalysts by SMSI.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"182 ","pages":"Article 113114"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142422406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Javed Hussain Shah , Muhammad Shahbaz , Shahzad Sharif , Ghulam Ullah , Sundas Shahzad , Khurram Shahzad Munawar , Onur Şahin , Kareem Yusuf , Hijaz Ahmad
{"title":"Redox active cobalt based bi-linker metal organic frameworks derived from 5-sulfoisopthalic acid and 4,4-bipyridine for supercapacitor","authors":"Javed Hussain Shah , Muhammad Shahbaz , Shahzad Sharif , Ghulam Ullah , Sundas Shahzad , Khurram Shahzad Munawar , Onur Şahin , Kareem Yusuf , Hijaz Ahmad","doi":"10.1016/j.materresbull.2024.113123","DOIUrl":"10.1016/j.materresbull.2024.113123","url":null,"abstract":"<div><div>In this research study, we have synthesized, characterized and extensively compared the electrochemical characteristics of two materials derived from 5-sulphoisophtalic acid, 4,4-bipyridine and cobalt metal using sonochemical method. Cobalt-bipyridine complex with 5-SIP in lattice structure (<strong>RG-41</strong>) showed predominant capacitive behavior whereas Co-SIP-Bpy MOF (<strong>RG-42</strong>) exhibited significant pseudocapacitive attributes due to the presence of coordination linkage responsible for the electron transfer. Due to the effective electrochemical properties of <strong>RG-42</strong>, we implemented it practically by fabricating a hybrid device with outstanding electrochemical features, demonstrating impressive 92 % cyclic stability with energy density and power density of 51.41 Wh/kg and 800 W/kg at 1 A/g, respectively. Dunn's method was employed to obtain capacitive-diffusive contributions for both half-electrochemical cells as well as hybrid device. These results underscored the potential of <strong>RG-42</strong> as a competitive electrode material for future energy storage applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"181 ","pages":"Article 113123"},"PeriodicalIF":5.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}