CrystEngComm最新文献

Self-assembly of Cu-glutathione nanoparticles on WO3 nanorods: amelioration of charge transfer and photocatalytic performance 铜-谷胱甘肽纳米颗粒在 WO3 纳米棒上的自组装：改善电荷转移和光催化性能

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-10-04 DOI: 10.1039/D4CE00852A

Er-da Zhan, Zhi-yu Liang, Ying Wang, Lin-zhu Zhang and Guo-xin Zhuang

{"title":"Self-assembly of Cu-glutathione nanoparticles on WO3 nanorods: amelioration of charge transfer and photocatalytic performance","authors":"Er-da Zhan, Zhi-yu Liang, Ying Wang, Lin-zhu Zhang and Guo-xin Zhuang","doi":"10.1039/D4CE00852A","DOIUrl":"https://doi.org/10.1039/D4CE00852A","url":null,"abstract":"The substitution of noble metals with cost-effective copper nanoparticles (Cu NPs) in the preparation of metal/semiconductor composite catalysts holds significant environmental and economic implications for the degradation of various organic pollutants. However, the development of highly active and stable Cu NPs catalysts has emerged as a key challenge in the progression of non-noble metal catalysts. In this study, the reducibility of glutathione (GSH) was employed to reduce Cu2+ to Cu NPs, resulting in the formation of stable Cu-GSH nanoparticles through S–H bonds. An electrostatic self-assembly strategy was used to load Cu-GSH onto WO3 nanorods, thereby designing a Cu GSH/WO3 catalytic material with highly efficient charge transport efficiency. Under visible light irradiation, 3 wt% Cu GSH/WO3 demonstrated excellent degradation performance for organic pollutants, achieving the degradation of 99.8% of Rh B and 98.6% of TC within 60 minutes. Experimental results from photoelectrochemical (PEC) and electron spin resonance (ESR) analyses indicated that Cu GSH functions as an efficient electron trap, which triggers electron flow driven by the Schottky barrier, capturing the photoexcited electrons from WO3. This greatly enhances the separation efficiency of WO3 carriers and extends the lifetime of the carriers. It is hoped that this work will provide a viable approach for the synthesis of new high-efficiency composite photocatalytic materials.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Expression of concern: Designing novel morphologies of l-cysteine surface capped 2D covellite (CuS) nanoplates to study the effect of CuS morphologies on dye degradation rate under visible light 表达关切：设计新型 l-半胱氨酸表面封端的二维腔沸石（CuS）纳米板形态，研究 CuS 形态对可见光下染料降解率的影响

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-09-27 DOI: 10.1039/D4CE90121E

Shahid Iqbal, Ali Bahadur, Shoaib Anwer, Muhammad Shoaib, Guocong Liu, Hao Li, Muhammad Raheel, Mohsin Javed and Bilal Khalid

引用次数: 0

Design and synthesis of two functional coordination polymers based on the 1,1′-bis(3-carboxybenzyl)-4,4′-bipyridinium ligand† 基于 1,1′-双（3-羧基苄基）-4,4′-联吡啶鎓配体†的两种功能配位聚合物的设计与合成

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-09-25 DOI: 10.1039/D4CE00732H

Jiali Chen, Yuying Fu, Qiaoyun Liu, Shoujie Shen and Jinjian Liu

{"title":"Design and synthesis of two functional coordination polymers based on the 1,1′-bis(3-carboxybenzyl)-4,4′-bipyridinium ligand†","authors":"Jiali Chen, Yuying Fu, Qiaoyun Liu, Shoujie Shen and Jinjian Liu","doi":"10.1039/D4CE00732H","DOIUrl":"https://doi.org/10.1039/D4CE00732H","url":null,"abstract":"Based on the viologen ligand 1,1′-bis(3-carboxylatobenzyl)-4,4′-bipyridinium dichloride (H2BcbpyCl2) as the functional subject and two aromatic carboxylic acids (m-H2BDC = 1,3-benzenedicarboxylic acid and H4BTEC = 1,2,4,5-benzenetetracarboxylic acid) as auxiliary ligands, two Zn(II)-based coordination polymers, formulated as [Zn(Bcbpy)0.5(m-BDC)]n (1) and [Zn(Bcbpy)0.5(BTEC)0.5(H2O)]n (2), have been successfully prepared by solvothermal strategies. Compounds 1 and 2 both have a three-dimensional framework. The two compounds demonstrate reversible photochromic properties owing to the formation of viologen radicals via photoinduced electron transfer. In addition, the photomodulated fluorescence and ink-free erasable printing properties were also studied, which enriched the study of the photophysical properties of the crystals.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental evidence of the pyroelectric nature of struvite 铁闪石热释电性质的实验证据

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-09-25 DOI: 10.1039/D4CE00908H

Riccardo Cabassi, Davide Delmonte and Jolanta Prywer

{"title":"Experimental evidence of the pyroelectric nature of struvite","authors":"Riccardo Cabassi, Davide Delmonte and Jolanta Prywer","doi":"10.1039/D4CE00908H","DOIUrl":"https://doi.org/10.1039/D4CE00908H","url":null,"abstract":"Struvite (MgNH4PO4·6H2O) is a mineral first identified in 1845. It is being tested for several reasons: (1) it is a problem in liquid wastewater treatment plants; (2) on the other hand, it is recovered from these wastewaters for its phosphorus, magnesium and nitrogen; (3) is the main component of microbial-induced urinary stones. We have recently shown that struvite is ferroelectric and piezoelectric. In this paper, we present the first experimental evidence of the pyroelectric nature of struvite. Using a single-diffusion gel growth technique, we grew struvite crystals as flat, parallel plates. We performed measurements of pyroelectric currents on struvite of this shape, using it as a dielectric of a plate capacitor. The occurrence of pyroelectric effects in struvite was investigated by measuring depolarization currents as a function of temperature. This technique allows the disclosure of ferroelectric/pyroelectric transitions as well as the reconstruction of the ferroelectric loop. We found that the value of the pyroelectric coefficient p attains a maximum of 22 × 10−6 C m−2 K−1 slightly below room temperature, going down to p ≅ 10 × 10−6 C m−2 K−1 at room temperature. This value is comparable to values for other minerals. For example, the pyroelectric polarization coefficient of tourmaline, the mineral for which the pyroelectric effect was first discovered, is 4 × 10−6 C m−2 K−1. This value is 2.5 times lower than that measured for struvite, illustrating struvite's fairly strong pyroelectricity.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ce/d4ce00908h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correction: Quadrupolar NMR crystallography guided crystal structure prediction (QNMRX-CSP) 更正：四极核磁共振晶体学指导下的晶体结构预测（QNMRX-CSP）

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-09-24 DOI: 10.1039/D4CE90117G

Austin A. Peach, Carl H. Fleischer, Kirill Levin, Sean T. Holmes, Jazmine E. Sanchez and Robert W. Schurko

引用次数: 0

Structural basis for a two-dimensional flexible pharmaceutical solvate crystal: indomethacin methanol† 二维柔性药用溶胶晶体的结构基础：甲醇†吲哚美辛

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-09-23 DOI: 10.1039/D4CE00920G

Aritra Bhowmik, Sanjivani Bamane and Manish Kumar Mishra

引用次数: 0

Elucidating metal–organic framework structures using synchrotron serial crystallography† 利用同步辐射串行晶体学阐明金属有机框架结构†。

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-09-20 DOI: 10.1039/D4CE00735B

Elke De Zitter, David Perl, Martin Savko, Daniel W. Paley, Alexander J. Thom, Damien Jeangerard, Aaron S. Brewster, Antoine Tissot, Christian Serre and William Shepard

{"title":"Elucidating metal–organic framework structures using synchrotron serial crystallography†","authors":"Elke De Zitter, David Perl, Martin Savko, Daniel W. Paley, Alexander J. Thom, Damien Jeangerard, Aaron S. Brewster, Antoine Tissot, Christian Serre and William Shepard","doi":"10.1039/D4CE00735B","DOIUrl":"https://doi.org/10.1039/D4CE00735B","url":null,"abstract":"Metal organic frameworks (MOFs) are porous crystalline materials that display a wide variety of physical and chemical properties. Their single crystal structure determination is often challenging because in most cases micro- or nano-sized crystals spontaneously form upon MOF synthesis, which cannot be recrystallized. The production of larger single crystals for structure determination involves optimizing, and thus modifying, the conditions of synthesis, in which success cannot be guaranteed. Failure to produce crystals suitable for single-crystal X-ray diffraction leaves the 3D structure of the MOF compound unknown, and scientists must resort to more challenging structure solution methods based on X-ray powder or electron diffraction data. These laborious tasks can be avoided by using serial crystallography techniques which merge data collected on many micro-crystals. Here, we report the application of three synchrotron serial crystallography methods. We call these “mesh”, “grid” and “mesh&collect” scans. “Still” images (no rotation) are collected in the mesh scan approach, whereas small rotational wedges are collected in the grid scan method. The third protocol, mesh&collect, combines the acquisition of still images and rotational wedges. Using these means, we determine the ab initio structure of benchmark MOFs, MIL-100(Fe) and ZIF-8, that differ largely in unit cell size. These methods are expected to be widely applicable and facilitate structure determination of many MOF microcrystalline systems.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ce/d4ce00735b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation, magnetic and transport properties of Mn3Sn single crystals Mn3Sn 单晶的制备、磁性和传输特性

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-09-20 DOI: 10.1039/D4CE00849A

Shaobo Huang, Shuai Li, Lizhi Yi, Xiong He, Min Liu, Guangduo Lu, Chenyang Liu, Shiqi Li, Yunli Xu and Liqing Pan

{"title":"Preparation, magnetic and transport properties of Mn3Sn single crystals","authors":"Shaobo Huang, Shuai Li, Lizhi Yi, Xiong He, Min Liu, Guangduo Lu, Chenyang Liu, Shiqi Li, Yunli Xu and Liqing Pan","doi":"10.1039/D4CE00849A","DOIUrl":"https://doi.org/10.1039/D4CE00849A","url":null,"abstract":"Topological antiferromagnetic Mn3Sn crystals exhibit notable magnetic and transport properties, comparable to ferromagnets, and undergo various intriguing magnetic phase transitions during heating or cooling. The spin structures of Mn3Sn crystals are highly influenced by growth conditions and the stoichiometric ratio of Mn and Sn, which in turn affect the phase transition temperature and the transport signatures. In this work, we employed the flux method, carefully controlling factors such as melting temperature, cooling rate, sampling temperature, vacuum, and composition, and fabricated Mn2.991Sn1.009 bulk single crystals successfully. The size of the resulting single crystal after cutting is 6 × 5 × 3 mm3. The microstructure, magnetic and transport properties of the prepared single crystals were characterized parallel to and perpendicular to the z-axis. A strong and a weak magnetic phase transition were observed at 200 K and 280 K, respectively. Our results indicate that the magnetic phase transition of Mn3Sn crystals at 200 K involves a switch in the easy-axis of magnetization from in-plane to out-of-plane, corresponding to the anomalous Hall resistance peak at 200 K. These results show a clear correlation between the spin structure and Berry curvature in Mn3Sn crystals, which significantly affect the magnitude of the anomalous Hall effect.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced thermoluminescence of sodium-doped lithium–magnesium fluorophosphate Li9Mg3[PO4]4F3† 钠掺杂氟磷酸锂镁 Li9Mg3[PO4]4F3† 的增强热致发光

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-09-19 DOI: 10.1039/D4CE00646A

D. A. Akulov, M. O. Kalinkin, A. Y. Chufarov, A. P. Tyutyunnik, M. A. Semkin, N. I. Medvedeva, N. A. Zhuravlev, R. M. Abashev, A. I. Surdo and D. G. Kellerman

{"title":"Enhanced thermoluminescence of sodium-doped lithium–magnesium fluorophosphate Li9Mg3[PO4]4F3†","authors":"D. A. Akulov, M. O. Kalinkin, A. Y. Chufarov, A. P. Tyutyunnik, M. A. Semkin, N. I. Medvedeva, N. A. Zhuravlev, R. M. Abashev, A. I. Surdo and D. G. Kellerman","doi":"10.1039/D4CE00646A","DOIUrl":"https://doi.org/10.1039/D4CE00646A","url":null,"abstract":"Lithium–magnesium fluorophosphate with the formula Li9Mg3[PO4]4F3 has recently been proposed as a new thermoluminescent material capable of storing ionizing radiation energy and emitting photons after additional thermal stimulation. Pure and sodium-doped fluorophosphates were obtained by microwave-assisted synthesis. Using X-ray and neutron diffraction methods, it was shown that sodium occupies only one of the three nonequivalent lithium positions. This conclusion was confirmed by a MAS NMR study and ab initio calculations. A significant increase in the thermoluminescence intensity of sodium-containing fluorophosphates in comparison to the undoped compound was found. Analysis of the kinetic parameters obtained from glow curves showed that they are similar for the undoped and sodium-doped samples. This indicates that the addition of sodium does not result in the emergence of novel types of traps, but rather in a change in their number. The effect of sodium on the formation of intrinsic defects, which can be responsible for the enhanced thermoluminescence, is considered using ab initio modelling.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142397547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Size-unlimited sapphire single-crystal fiber growth and the anisotropic & size-dependent mechanical and thermometry performance 尺寸不受限制的蓝宝石单晶纤维生长以及各向异性和尺寸相关的机械和热测量性能

IF 2.6 3区化学

CrystEngComm Pub Date : 2024-09-19 DOI: 10.1039/D4CE00719K

Tao Wang, Qi Guo, Jian Zhang, Liang Zhang, Kaihui Zhang, Xin Guan, Na Lin, Yongsen Yu, Zhitai Jia and Xutang Tao

{"title":"Size-unlimited sapphire single-crystal fiber growth and the anisotropic & size-dependent mechanical and thermometry performance","authors":"Tao Wang, Qi Guo, Jian Zhang, Liang Zhang, Kaihui Zhang, Xin Guan, Na Lin, Yongsen Yu, Zhitai Jia and Xutang Tao","doi":"10.1039/D4CE00719K","DOIUrl":"10.1039/D4CE00719K","url":null,"abstract":"Sapphire fibers are becoming a research hotspot for high-temperature sensing in extreme environments due to their high melting point, wide transmission band and superior thermal stability. Nevertheless, the preparation of high-quality, few-mode, large-length sapphire fibers is still a major challenge for further application. Here, we have successfully fabricated high-quality sapphire fibers with a minimum diameter of ∼16 μm and a maximum length of more than 50 m using a state-of-the-art laser-heated pedestal growth system, which, to the best of our knowledge, is the size record for single-crystal fibers. Besides, the anisotropic growth behavior and mechanical properties were investigated in detail, demonstrating that c-oriented sapphire fibers present higher high-temperature tensile strength and superior creep resistance compared with a- and m-oriented sapphire fibers. Further reasearch demonstrates that the tensile strength increases dramatically with decreasing diameter, with the 30 μm-diameter sapphire fibers achieving a tensile strength of more than 8000 MPa and a maximum strain over 20 000 με, both of which are more than twice those of conventional sapphire fibers. Furthermore, a fiber Bragg grating was fabricated within a 30 μm-diameter sapphire fiber for the first time by the femtosecond laser line-by-line scanning method, exhibiting few-mode and stable spectral response in the range of 20–1600 °C with a maximum sensitivity of 40.45 pm °C−1 at 1600 °C. This work provides a feasible approach for the preparation of sapphire fibers without size limitation, and demonstrates huge potential of ultra-fine sapphire fibers for applications in harsh environments and strain sensing.","PeriodicalId":70,"journal":{"name":"CrystEngComm","volume":null,"pages":null},"PeriodicalIF":2.6,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142263084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0