Journal of Materials Chemistry C最新文献_第3页

Ultra-low thermal conductivity and enhanced mechanical properties of high-entropy perovskite ceramics† 高熵过氧化物陶瓷的超低导热性和更强的机械性能†。

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-10-02 DOI: 10.1039/D4TC03278K

Wenjing Qiao, Jiantuo Zhao, Yingwei Qi, Xiaopei Zhu, Xifei Wang, Zhizhi Xu, Mei Bai, Junwen Mei, Yanhua Hu and Xiaojie Lou

{"title":"Ultra-low thermal conductivity and enhanced mechanical properties of high-entropy perovskite ceramics†","authors":"Wenjing Qiao, Jiantuo Zhao, Yingwei Qi, Xiaopei Zhu, Xifei Wang, Zhizhi Xu, Mei Bai, Junwen Mei, Yanhua Hu and Xiaojie Lou","doi":"10.1039/D4TC03278K","DOIUrl":"https://doi.org/10.1039/D4TC03278K","url":null,"abstract":"At present, the research on high-entropy perovskite materials mainly focuses on electrical properties. When they are employed in high-temperature and high-pressure environments, the stability of their working performance is extremely important, but the research on them is very limited. A novel entropy-stabilized ceramic system, denoted as Ba(Zr0.2Ti0.2Sn0.2Hf0.2X0.2)O3 (X = Nb5+, Ta5+), featuring a disordered perovskite structure, was synthesized. The high entropy ceramic, Ba(Zr0.2Ti0.2Sn0.2Hf0.2Ta0.2)O3 (abbreviated as HEC-Ta), manifests a thermal expansion coefficient (9.00 × 10−6 K−1 at 1400 °C). It exhibits exceptional thermal stability within the range of 30 to 1400 °C, coupled with low thermal conductivity (1.97 W m−1 K−1 at 1200 °C) and superior mechanical properties (Hv = 10.96 GPa, E = 178.28 GPa). These properties are ascribed to a high degree of lattice distortion arising from the stochastic distribution of different cations, along with the high entropy cocktail effect, leading to increased phonon scattering. This study thus presents a novel approach to develop a ceramic material devoid of rare earth elements, and can be enlightened for the application of perovskite materials in high temperature environments.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green-emitting CsPbI3 nanorods decorated with CsPb2I5 and Cs4PbI6 nanoclusters† 用 CsPb2I5 和 Cs4PbI6 纳米团簇装饰的绿色发光 CsPbI3 纳米棒†。

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-10-01 DOI: 10.1039/D4TC03500C

Paundra Rizky Pratama, Azzah Dyah Pramata, Fuko Shiga, Jonas Karl Christopher N. Agutaya, Yusuke Inomata, Biplab Manna, Agung Purniawan, Yuji Akaishi and Tetsuya Kida

{"title":"Green-emitting CsPbI3 nanorods decorated with CsPb2I5 and Cs4PbI6 nanoclusters†","authors":"Paundra Rizky Pratama, Azzah Dyah Pramata, Fuko Shiga, Jonas Karl Christopher N. Agutaya, Yusuke Inomata, Biplab Manna, Agung Purniawan, Yuji Akaishi and Tetsuya Kida","doi":"10.1039/D4TC03500C","DOIUrl":"https://doi.org/10.1039/D4TC03500C","url":null,"abstract":"Lead halide-based perovskites (CsPbX3; X = Cl, Br, I) are prominent luminescent materials with pure red, green, and blue emissions; however, when mixed to obtain multiple emissions, they undergo spontaneous anion exchange reactions, which lead to undesirable changes in their photoluminescence (PL) and optical properties. This study presents iodide-based perovskites that can be color-transformed by controlling and coupling their phases in the nanoscale. The green-emitting CsPbI3 nanorods decorated with Cs4PbI6 and CsPb2I5 nanoclusters (MP-nanorods) were produced by sequential transformation using the hot chemical method with the assistance of zirconium tetraisobutoxide and 1-octadecene. At room temperature, MP-nanorods exhibit narrow-band green emission with line widths of around 20.5 nm, originating from the multiphase heterojunction of CsPbI3 nanorods coupled with Cs4PbI6 nanoclusters. Additionally, they can maintain and differentiate their initial photoemission in the colloidal mixture in the presence of red-emitting CsPbI3 quantum dots without suffering from peak merging. The obtained results open the possibility of applications that require a stable mixture of multi-band gap systems such as complex anticounterfeiting, tandem rainbow solar cells, and white LED applications because they can retain their initial color purity without losing their original optical properties.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prediction of two-dimensional 2H-M2O3 (M = Ti and Zr) with strong linear and non-linear optical response in the infrared range† 预测二维 2H-M2O3（M = Ti 和 Zr）在红外范围内具有强烈的线性和非线性光学响应†。

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-10-01 DOI: 10.1039/D4TC02958E

Anqi Huang, Linxuan Ji, Qiaoqiao Li, Yu Wu, Yi-min Ding and Liujiang Zhou

{"title":"Prediction of two-dimensional 2H-M2O3 (M = Ti and Zr) with strong linear and non-linear optical response in the infrared range†","authors":"Anqi Huang, Linxuan Ji, Qiaoqiao Li, Yu Wu, Yi-min Ding and Liujiang Zhou","doi":"10.1039/D4TC02958E","DOIUrl":"https://doi.org/10.1039/D4TC02958E","url":null,"abstract":"Recently, MXene-like MOenes have emerged as promising candidates for next-generation two-dimensional optoelectronic devices due to their exceptional electrical and optical properties. By using first-principles calculations, we design a novel two-dimensional 2H-M2O3 (M = Ti, Zr) through the oxygen functionalization of the M2O monolayer, which shows high mechanical, dynamic, and thermal stabilities. The calculation results reveal a relatively small band gap of 0.49 and 0.94 eV and exciton binding energy of 0.26 and 0.46 eV for 2H-Ti2O3 and 2H-Zr2O3 monolayers, respectively. Importantly, they exhibit good light absorption in the infrared range with a first excitonic peak at 0.31 and 0.54 eV, respectively. Notably, a wide transparent window from the visible to ultraviolet region in linear optical spectra is found due to the large gap within the valence bands. The octahedral distortion and small optical gap of the 2H-M2O3 monolayer result in a large second harmonic generation (SHG) coefficient of approximately 4000 pm V−1. This work optimizes the electrical and optical properties of MOenes using O termination, providing high linear and SHG response at specific wavelengths.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142447290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ formation of a Co-MOF/Ti–Fe2O3 photoanode for efficient photoelectrochemical water splitting† 原位形成用于高效光电化学水分离的 Co-MOF/Ti-Fe2O3 光阳极†。

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-09-30 DOI: 10.1039/D4TC01728E

Kaikai Ba, Hongda Li, Kai Zhang, Yanhong Lin, Wanchun Zhu and Tengfeng Xie

引用次数: 0

Contributors to the Journal of Materials Chemistry C Emerging Investigators 2024 collection 材料化学杂志》C 版《2024 年新兴研究者》文集撰稿人

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-09-30 DOI: 10.1039/D4TC90151G

引用次数: 0

High depolarization temperature and large piezoelectricity in BiScO3–PbTiO3–Bi(Zn1/2Ti1/2)O3 piezoelectric energy harvesting ceramics† BiScO3-PbTiO3-Bi(Zn1/2Ti1/2)O3 压电能量收集陶瓷中的高去极化温度和大压电性†。

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-09-30 DOI: 10.1039/D4TC03339F

Huizhong Wang, Xiaole Yu, Mupeng Zheng, Mankang Zhu and Yudong Hou

{"title":"High depolarization temperature and large piezoelectricity in BiScO3–PbTiO3–Bi(Zn1/2Ti1/2)O3 piezoelectric energy harvesting ceramics†","authors":"Huizhong Wang, Xiaole Yu, Mupeng Zheng, Mankang Zhu and Yudong Hou","doi":"10.1039/D4TC03339F","DOIUrl":"https://doi.org/10.1039/D4TC03339F","url":null,"abstract":"Piezoceramics with a high depolarization temperature (Td) and excellent piezoelectricity are ideal materials for constructing advanced high-temperature piezoelectric energy harvesters (HT-PEHs). Herein, the Bi(Zn1/2Ti1/2)O3 (BZT) unit with a large tetragonality was added into the BiScO3–PbTiO3 (BS–PT) high-temperature piezoelectric matrix under the guidance of morphotropic phase boundary (MPB) manipulation and a lattice distortion modulation strategy. Based on the dual effects of linear expansion of MPB and the enhancement of lattice tetragonality, the perovskite-type 0.36BS–0.62PT–0.02BZT MPB composition shows a Td of up to 418 °C and a large high-temperature piezoelectric constant (d33) of 932 pC N−1. The above comprehensive high-temperature characteristics are far superior to those of most reported perovskite piezoceramics. Moreover, the HT-PEH assembled using the 0.36BS–0.62PT–0.02BZT MPB ceramic exhibits excellent output power density of 80 μW cm−3 and ability to drive microelectronic devices even at 400 °C. This work demonstrates that the BS–PT–BZT material is a promising candidate for high-temperature piezoelectric energy harvesting applications.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of a NADH-modified ZnO electron transport layer in high performance organic solar cells† NADH 改性氧化锌电子传输层在高性能有机太阳能电池中的应用†.

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-09-28 DOI: 10.1039/D4TC03144J

Hongye Li, Song Yang and Huangzhong Yu

引用次数: 0

Synergistic modulation of BiOI by atomic-level vacancies and dominant facets for efficient photocatalytic degradation of bisphenol A† 原子级空位和优势面对 BiOI 的协同调制，实现双酚 A† 的高效光催化降解

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-09-28 DOI: 10.1039/D4TC02536A

Qicheng He, Zhihao Zhang, Quanxi Zhang and Zhifeng Zhang

{"title":"Synergistic modulation of BiOI by atomic-level vacancies and dominant facets for efficient photocatalytic degradation of bisphenol A†","authors":"Qicheng He, Zhihao Zhang, Quanxi Zhang and Zhifeng Zhang","doi":"10.1039/D4TC02536A","DOIUrl":"https://doi.org/10.1039/D4TC02536A","url":null,"abstract":"Precise control of desirable facets and vacancies is expected to be a promising strategy for improving the photocatalytic performance of catalysts. Herein, BiOI-1 and BiOI-2 were designed and prepared with (102) and (110) as the dominant exposed facets, respectively. Moreover, BiOI-1 and BiOI-2 correspond to the major types VBiIBi and VBiOBiBi, respectively. The experimental results showed that the degradation and mineralization of bisphenol A (BPA) by BiOI-2 could reach 100% and 95.90% under visible light irradiation. The excellent catalytic performance of BiOI-2 is attributed to the optimization of the energy band structure by its special facets and vacancies, and the narrow band gap promotes the separation of photogenerated electron–hole pairs. Meanwhile, the strong reducing property of the conduction band (CB) and the strong adsorption capacity for water and oxygen contribute to the fact that BiOI-2 can generate a large amount of reactive oxygen species (ROS). This work provides an atomic-scale understanding of the synergistic effects of vacancies and facets on catalysts and offers new directions in the management of water environmental pollution.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanocrystalline cellulose-based mixed ionic–electronic conductor for bioelectronics† 用于生物电子学的基于纳米晶纤维素的离子电子混合导体†。

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-09-27 DOI: 10.1039/D4TC03264K

Katharina Matura, Rosarita D’Orsi, Laura Spagnuolo, Felix Mayr, Munise Cobet, Christoph Putz, Alessandra Operamolla and Serpil Tekoglu

{"title":"Nanocrystalline cellulose-based mixed ionic–electronic conductor for bioelectronics†","authors":"Katharina Matura, Rosarita D’Orsi, Laura Spagnuolo, Felix Mayr, Munise Cobet, Christoph Putz, Alessandra Operamolla and Serpil Tekoglu","doi":"10.1039/D4TC03264K","DOIUrl":"https://doi.org/10.1039/D4TC03264K","url":null,"abstract":"Mixed ionic–electronic conductors (MIEC) are pivotal in advancing medical diagnostics, therapeutic devices, and health monitoring solutions due to their unique properties that enable more effective interfaces between electronic devices and biological systems. Cellulose, a natural and abundant polymer, is a promising material in the development of MIECs for bioelectronics. Combining cellulose with conductive polymer components can leverage the biocompatibility, sustainability, and mechanical properties of composite materials. In this study, we highlight the sulfated cellulose nanocrystals (S-CNCs) as a template for the facile green synthesis of conductive polymer PEDOT (poly(3,4-ethylenedioxythiophene)). The PEDOT:S-CNCs nanocomposite possesses good conductivity and high dispersibility in water. The electronic conductivity is recorded up to 5 S cm−1. A comprehensive investigation for material characterization is associated with the changes in their micro- and nanostructure surface morphology. The biocomposite is deposited as a channel material in organic electrochemical transistors (OECTs) to analyze ion-to-electron transduction. The maximum transconductance values are obtained up to 13.6 mS and 44.3 mS for single-channel and interdigitated OECTs, respectively, without applying photolithography techniques. The high transconductance values reveal the great potential of PEDOT:S-CNCs composite for bioelectronics.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/tc/d4tc03264k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A gas-phase alkali-halide-assisted stable precursor supplied from zirconium carbide for the synthesis of 2D large-sized ZrS2 nanosheets† 一种由碳化锆提供的气相碱卤化物辅助稳定前驱体用于合成二维大尺寸 ZrS2 纳米片†。

IF 5.7 2区材料科学

Journal of Materials Chemistry C Pub Date : 2024-09-27 DOI: 10.1039/D4TC02834A

Xuehao Guo, Xiulian Fan, Xilong Zhou, Wenlong Chu, Chenyang Niu, Liqi He, Shizhen Bin and Yu Zhou

{"title":"A gas-phase alkali-halide-assisted stable precursor supplied from zirconium carbide for the synthesis of 2D large-sized ZrS2 nanosheets†","authors":"Xuehao Guo, Xiulian Fan, Xilong Zhou, Wenlong Chu, Chenyang Niu, Liqi He, Shizhen Bin and Yu Zhou","doi":"10.1039/D4TC02834A","DOIUrl":"https://doi.org/10.1039/D4TC02834A","url":null,"abstract":"Group-IVB transition metal dichalcogenides such as HfS2 and ZrS2 demonstrate the most promising semiconducting properties, with moderate band gaps and high predicted carrier mobilities. However, the lateral growth of large-domain-size single crystalline ZrS2 nanosheets remains to be developed, which limits various electronic and optoelectronic applications. Here, we report a new precursor strategy for the synthesis of large-sized 2D ZrS2 nanosheets with lateral orientations. Volatilization of high-melting-point zirconium carbide as a stable precursor was controlled through the assistance of a remote gas-phase alkali halide, which avoids high nucleation density and vertical orientation at the initial stage. The 2D ZrS2 nanosheets were regulated by adjusting the growth parameters to give a lateral size of up to 22 μm and a thickness of 8 nm, and exhibited good crystalline qualities and a uniform surface. Field effect transistors of 2D ZrS2 nanosheets exhibited n-type transport characteristics with a high on/off ratio and reasonable carrier mobilities. Our new precursor and chemical design pave the way for the synthesis of high-performance group-IVB transition metal dichalcogenide wafers.","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142518340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0