The Lancet Diabetes & Endocrinology最新文献

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Electron field emission property of NiO-decorated ZnO nanorods grown on diamond films 金刚石薄膜上生长的氧化镍装饰氧化锌纳米棒的电子场发射特性
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-11 DOI: 10.1016/j.ceramint.2024.10.157
Dawei Chen, Yanan Su, Yingzhou Hu, Hongjun Hei, Shengwang Yu, Yanyan Shen, Bing Zhou, Ke Zheng, Jie Gao
{"title":"Electron field emission property of NiO-decorated ZnO nanorods grown on diamond films","authors":"Dawei Chen, Yanan Su, Yingzhou Hu, Hongjun Hei, Shengwang Yu, Yanyan Shen, Bing Zhou, Ke Zheng, Jie Gao","doi":"10.1016/j.ceramint.2024.10.157","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.157","url":null,"abstract":"ZnO/micron diamond (MCD) composite structure combines two wide-band gap semiconductor materials, providing stable performance suitable for high-performance electron field emission (EFE) devices operating in various complex environments. Nonetheless, the optical and electrochemical limitations of ZnO constrain its effectiveness. Typically, NiO can compensate these inherent defects in ZnO, thereby enhancing the performance of field-emitting devices. In this research, NiO-decorated ZnO thin films were fabricated on diamond surfaces using hydrothermal/sol-gel two-step method. The impact of varying Ni doping concentrations caused by nickel acetate solutions on the field emission properties was thoroughly investigated. Furthermore, this study involved the fabrication of NiO-decorated ZnO/micron diamond heterojunction composite structures, exploring the impact of the structure on the optoelectronic performance of the devices. The Ni doping concentration increases in the NiO films formed between the ZnO nanorods, the doped Ni exists in the ZnO/MCD composite structure as both Ni<sup>2+</sup> and Ni<sup>3+</sup>, which are important materials for semiconductor electronic devices. The NiO decoration process induced the creation of defect levels within the bandgap of the nanorod array structure, consequently enhancing the photoluminescence performance of ZnO. Furthermore, the interaction between NiO and ZnO facilitated the formation of a p-n junction at the interface, generating an internal electric field. This electric field significantly improved the current conduction field and maximum current density of ZnO, thereby enhancing its electric field emission performance. The optical and electrical properties of ZnO nanorods doped at 0.1M exhibited the most favorable characteristics among all tested samples. At a doping concentration of 0.1 M, the turn-on electric field reaches a minimum value of 0.96 V/μm and the maximum current density J reaches a maximum value of 2.54 mA/cm<sup>2</sup>. These results offer novel insights for advancing the development of integrated broadband optical devices.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"110 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431366","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-pollutant degradation from 2D MoO3/g-C3N4/functional carbon nanomaterial based composite utilizing Z-scheme photocatalysis 基于二维 MoO3/g-C3N4/ 功能碳纳米材料的复合材料利用 Z 型光催化技术降解多种污染物
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-11 DOI: 10.1016/j.ceramint.2024.10.144
Ambika Pathak, Sandeep Chhoker
{"title":"Multi-pollutant degradation from 2D MoO3/g-C3N4/functional carbon nanomaterial based composite utilizing Z-scheme photocatalysis","authors":"Ambika Pathak, Sandeep Chhoker","doi":"10.1016/j.ceramint.2024.10.144","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.144","url":null,"abstract":"In this report, photocatalysis as an advance oxidation process (AOPs) to be the most suitable for degrading dye pollutant like acriflavine and Methylene blue via Z-scheme catalysis. Current vivid study converges the role of 2D MoO<sub>3</sub>/g-C<sub>3</sub>N<sub>4</sub> modified with green-precursor derived functional carbon nanomaterial (FCM). The morphological, structural and optical features of the composite were analysed using XRD, FESEM, EDX, FTIR, UV-VIS, Raman spectroscopy whereas its photocatalytic activity was assessed for the degradation of a pharmaceutical (acriflavine) and a textile (methylene blue) dye. The biocompatibility, reusability, chemical, thermal and hydrothermal stability of g-C<sub>3</sub>N<sub>4</sub> and FCM when complemented with 2D-MoO<sub>3</sub> for improved charge transport and enhanced surface area including Z-scheme catalysis, results in a stable and an abundant reaction for nearly 100% degradation of acriflavine in just 60 minutes and 94% degradation of methylene blue (MB) in 100 minutes under visible light. This efficiency is found to be less than 60% for each material when used stand-alone. Further, the demonstration of efficient visible range utilization (from 300-500 nm) by the composite that exhibits up-conversion as well as broad photoluminescence from FCMs in its nano-dimension form, is observed. Possible effect of internal electric field which reduces the electron-hole recombination, the suitable band positions for Z-scheme charge transfer, ease of production and scaling up, cost effectiveness and multi-dye degradation study suggest that the proposed composite is highly suitable in the family of photocatalysis for environmental cleaning of multiple cationic dyes.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"2 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NiMn-Ag NWs Complexes Electrode Material with In Situ Grown Conductive 3D Networks for Enhanced Supercapacitive Performance by Boosting Ni2+ 具有原位生长导电三维网络的镍锰银氮氧化物复合物电极材料,通过提高 Ni2+ 增强超级电容性能
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-11 DOI: 10.1016/j.ceramint.2024.10.054
Yuanting Wu, Jingyue Hu, Qiujun Liu, Xinmeng Zhang, Yunlong Xue, Bocheng Zhang, Xuhua Liu
{"title":"NiMn-Ag NWs Complexes Electrode Material with In Situ Grown Conductive 3D Networks for Enhanced Supercapacitive Performance by Boosting Ni2+","authors":"Yuanting Wu, Jingyue Hu, Qiujun Liu, Xinmeng Zhang, Yunlong Xue, Bocheng Zhang, Xuhua Liu","doi":"10.1016/j.ceramint.2024.10.054","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.054","url":null,"abstract":"Power density is one of the important factors affecting the performance of electrode materials, which is hampered by ion/electron transport and agglomeration build-up problems. In this study, a novel 3D NiMnO<sub>3</sub>/Ni(OH)<sub>2</sub>/Ag NWs composite is synthesized via the introduction of Ag NWs. The introduction of Ag NWs synergistically influences the crystal structure and micro-morphology of the NiMnO<sub>3</sub>/Ni(OH)<sub>2</sub>/Ag NWs composite. The unique pentatwinned structure of Ag NWs facilitates the enhancement of the (110) and (101) crystal planes, which induces the movement of Ni 2p<sub>3/2</sub>, leading to a significant increase of Ni<sup>2+</sup> concentration in the composites. This ensures an abundance of ion adsorption sites, generating materials conducive to reactive activity. This new structure increases the density of active sites and establishes a conductive network, which optimizes the electron and ion transport paths, greatly reduces the diffusion resistance at the electrode-electrolyte interface, and improves the charge transfer efficiency, thus effectively increasing the specific capacity and energy density of the material. The NiMnO<sub>3</sub>/Ni(OH)<sub>2</sub>/Ag NWs//AC device exhibits a remarkable specific capacity of 350.478 mAh·g<sup>-1</sup> at a current density of 0.01 A·cm<sup>-2</sup>, and its Ragone plot reveals a peak energy density of 81.107 Wh kg<sup>-1</sup> at a power density of 1699.871 W kg<sup>-1</sup>. Additionally, it achieves an energy density of 60.532 Wh kg<sup>-1</sup> at a power density of 8490.072 W kg<sup>-1</sup>. This study explores the design and application of 3D structured electrode materials, which effectively improves the specific capacity of the materials and provides a new idea to further improve the energy density of supercapacitors.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"34 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lessons to learn from the 2024 NICE guideline on adrenal insufficiency 从 2024 年 NICE 肾上腺功能不全指南中汲取的经验教训
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-11 DOI: 10.1016/s2213-8587(24)00307-3
Jiawen Dong, Jeremy W Tomlinson
{"title":"Lessons to learn from the 2024 NICE guideline on adrenal insufficiency","authors":"Jiawen Dong, Jeremy W Tomlinson","doi":"10.1016/s2213-8587(24)00307-3","DOIUrl":"https://doi.org/10.1016/s2213-8587(24)00307-3","url":null,"abstract":"No Abstract","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"16 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Flash sintering glass–ceramic treatment of Sr-contaminated soil waste 闪速烧结玻璃陶瓷处理锶污染土壤废弃物
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-11 DOI: 10.1016/j.ceramint.2024.10.136
Guilin Wei, Xiaoyan Shu, Jiahong Wang, Shibing Zuo, Kuan Wu, Guoliang Zhao, Fen Luo, Wenhong Han, Chen Xu, Xirui Lu
{"title":"Flash sintering glass–ceramic treatment of Sr-contaminated soil waste","authors":"Guilin Wei, Xiaoyan Shu, Jiahong Wang, Shibing Zuo, Kuan Wu, Guoliang Zhao, Fen Luo, Wenhong Han, Chen Xu, Xirui Lu","doi":"10.1016/j.ceramint.2024.10.136","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.136","url":null,"abstract":"Effective disposal of radioactive waste is crucial for safe development of nuclear energy. In this study, flash sintering technology is used for the first time to quickly solidify simulated Sr-contaminated soil waste. The waste can be converted into a glass–ceramic phase by heating the waste at 1100 °C for 1 min during flash sintering. The phase evolution during flash sintering as a function of density and amorphous fraction was systematically investigated. Additionally, the microstructural evolution of the matrices and the leaching behavior of simulated waste elements (e.g., Sr) were evaluated. This study explores the feasibility of using flash sintering for treating radioactive contamination waste.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"229 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dual functional high entropy perovskite La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O3 interfacial transition layer modified Cu2Y2O5/CdIn2O4 transparent pn junction towards photovoltaic enhancement 双功能高熵过氧化物 La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O3界面过渡层改性 Cu2Y2O5/CdIn2O4 透明 pn 结,实现光伏增效
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-11 DOI: 10.1016/j.ceramint.2024.10.143
Rui Wang, Bo He, Dingwei Wang, Chengyu Jia, Jun Cao, Lei Shi, Jiaqi Pan, Guangtong Hai, Chaorong Li
{"title":"Dual functional high entropy perovskite La(Mn0.2Cr0.2Fe0.2Co0.2Ni0.2)O3 interfacial transition layer modified Cu2Y2O5/CdIn2O4 transparent pn junction towards photovoltaic enhancement","authors":"Rui Wang, Bo He, Dingwei Wang, Chengyu Jia, Jun Cao, Lei Shi, Jiaqi Pan, Guangtong Hai, Chaorong Li","doi":"10.1016/j.ceramint.2024.10.143","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.143","url":null,"abstract":"A transparent device in perovskite HEO La(Mn<sub>0.2</sub>Cr<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>)O<sub>3</sub> modified Cu<sub>2</sub>Y<sub>2</sub>O<sub>5</sub>/CdIn<sub>2</sub>O<sub>4</sub> is prepared via a simple approach of sol-gel method. The Cu<sub>2</sub>Y<sub>2</sub>O<sub>5</sub>/La(Mn<sub>0.2</sub>Cr<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>)O<sub>3</sub>/CdIn<sub>2</sub>O<sub>4</sub> exhibits high transparency of ∼85-90%, obvious photovoltaic conversion efficiency enhancement of ∼2.5×10<sup>3</sup>-folds (PCE of ∼1.12%), and stable output in 5-months. This is mainly attributed to the La(Mn<sub>0.2</sub>Cr<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>)O<sub>3</sub> modification, as well as the appropriate Fermi level and high quantum yield. In this system, the La(Mn<sub>0.2</sub>Cr<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>)O<sub>3</sub> solid solution, with extra carrier injecting/driving from synergism of mixed transition metals charge compensation and lattice distortion, can improve the carrier kinetic equilibrium for PCE-transparency balance. Additionally, it can increase p-type conductivity through the synergism of Cu vacancy/interstitial oxygen. Moreover, the inorganic perovskite HEO La(Mn<sub>0.2</sub>Cr<sub>0.2</sub>Fe<sub>0.2</sub>Co<sub>0.2</sub>Ni<sub>0.2</sub>)O<sub>3</sub> with modification stability is beneficial for the actual applications.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"2 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strengthening of mechanical and tribological properties in CrFeCuMnNi high entropy alloy through dispersion of TiO2 reinforcement via powder metallurgy processes 通过粉末冶金工艺分散 TiO2 增强剂强化 CrFeCuMnNi 高熵合金的机械和摩擦学性能
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-11 DOI: 10.1016/j.ceramint.2024.10.155
Cheenepalli Nagarjuna, Sheetal Kumar Dewangan, K. Raja Rao, Man Mohan, Hansung Lee, Eunhyo Song, Byungmin Ahn
{"title":"Strengthening of mechanical and tribological properties in CrFeCuMnNi high entropy alloy through dispersion of TiO2 reinforcement via powder metallurgy processes","authors":"Cheenepalli Nagarjuna, Sheetal Kumar Dewangan, K. Raja Rao, Man Mohan, Hansung Lee, Eunhyo Song, Byungmin Ahn","doi":"10.1016/j.ceramint.2024.10.155","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.155","url":null,"abstract":"The present study reports the effect of TiO<sub>2</sub> reinforcement on the phase, microstructure, mechanical and tribological properties of CrFeCuMnNi/TiO<sub>2</sub> high entropy alloy composites (HEACs) processed by powder metallurgy. The results reveal the formation of single-phase face-centered cubic (FCC) structure after 30 h of milling in the original HEA, while TiO<sub>2</sub> peaks in the HEACs indicate uniform distribution. After sintering, multiple phases including FCC, Cr-rich, Cr<sub>2</sub>O<sub>3</sub> were observed. The hardness of HEAs increased from 330±10 to 440±10 HV and compressive yield strength increased from 480 to 760 MPa while scarifying the strain from 43.5 to 21 % with TiO<sub>2</sub> content. The addition of TiO<sub>2</sub> content slightly reduces the coefficient of friction and specific wear rate decreased by 45.16 % due to increased hardness and formation of stable oxide layer on the worn surface inhibits plastic deformation. The addition of TiO<sub>2</sub> reduces the dominance of abrasive and adhesive wear and enhances the strength of HEACs.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"103 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Joining SiC ceramics with CaO-Al2O3-SiO2 mixed powder/glass based on induction heating 基于感应加热的碳化硅陶瓷与 CaO-Al2O3-SiO2 混合粉/玻璃的接合
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-11 DOI: 10.1016/j.ceramint.2024.10.154
Xiu-Bing Chen, Lin-Lin Zhu, Chuang-Tian Zhan, Yu Tian, Wei-Ming Guo, Hua-Tay Lin
{"title":"Joining SiC ceramics with CaO-Al2O3-SiO2 mixed powder/glass based on induction heating","authors":"Xiu-Bing Chen, Lin-Lin Zhu, Chuang-Tian Zhan, Yu Tian, Wei-Ming Guo, Hua-Tay Lin","doi":"10.1016/j.ceramint.2024.10.154","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.154","url":null,"abstract":"CaO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> mixed powder and glass were used as the joining materials to join SiC ceramics by induction heating in a joining temperature range of 1400-1600°C under pressureless condition with heating and cooling rates of 100°C/min. The joint prepared with CaO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> mixed oxide powder as joining material has the highest shear strength of 60.09 ± 6.22 MPa at joining temperature of 1500°C, which contains triclinic CaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> crystalline phase generated by chemical reaction in the holding process. In contrast, the joint produced with CaO-Al<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> glass powder at 1500°C also has the highest shear strength of 75. 76 ± 2.34 MPa, which contains hexagonal CaAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> and quartz generated through crystallization in the holding process due to rapid cooling rate of induction heating. In this study, the feature of mixed powder and glass joining by the induction heating technology was discussed to provide an effective and economic method for ceramic joining.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"52 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reconstruction of The Surface Bi3+ Oxide Layer on Bi2O2CO3: Facilitating Electron Transfer for Enhanced Photocatalytic Degradation Performance of Antibiotics in Water 重构 Bi2O2CO3 表面的 Bi3+ 氧化层:促进电子转移以提高水中抗生素的光催化降解性能
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-10 DOI: 10.1016/j.ceramint.2024.10.132
Yu Fang, Liu Hong, Yang Dai, Qing Xiang, NianBing Zhang, Jiaojiao Li
{"title":"Reconstruction of The Surface Bi3+ Oxide Layer on Bi2O2CO3: Facilitating Electron Transfer for Enhanced Photocatalytic Degradation Performance of Antibiotics in Water","authors":"Yu Fang, Liu Hong, Yang Dai, Qing Xiang, NianBing Zhang, Jiaojiao Li","doi":"10.1016/j.ceramint.2024.10.132","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.132","url":null,"abstract":"The advancement and meticulous design of functional photocatalysts exhibiting exceptional photocatalytic redox activity represent a pivotal approach to mitigating the dual challenges of environmental pollution and energy scarcity. In this study, we elucidate the construction of a Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> catalytic system capable of inhibiting oxidative electron transfer through the attenuation of homogeneous Bi<sup>0</sup> particle formation, achieved through the judicious modulation of solvent ratios. This innovative architecture possesses a distinctive active site and enhances interfacial Bi-O electron transfer pathways via exposure to oxidized Bi<sup>3+</sup>. Upon photoexcitation, the Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> catalytic system undergoes structural distortions in its excited state that facilitate forbidden radiative relaxation, thereby fostering long-lived charge separation states. Remarkable catalytic activity was demonstrated in the remediation of pollutants, encompassing auto-oxidation and the catalytic degradation of superoxide radicals (•O<sub>2</sub><sup>-</sup>) and holes (h<sup>+</sup>). Notably, the effective degradation of tetracycline hydrochloride (TCH) in aqueous media reached an impressive 86% under simulated visible light irradiation, accompanied by a reaction rate constant 3.08 times superior to that of the 5-Bi/Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> counterpart. Theoretical analyses revealed that the oxidized state of Bi<sub>2</sub>O<sub>2</sub>CO<sub>3</sub> exhibits a crystal structure with significant electron trapping capability, undergoing pronounced apparent relaxation phenomena on its surface while demonstrating an enhanced adsorption affinity for H<sub>2</sub>O and O<sub>2</sub>. The potential degradation mechanisms were rigorously investigated through High-performance liquid chromatography (HPLC-MS), elucidating the photodegradation pathways and intermediates of TC. This work may serve as a distinct paradigm for the rational design of novel photocatalysts aimed at fostering sustainable environmental remediation and advancing energy innovation.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"54 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lightweight three-dimensional porous aramid nanofibers/magnetic alloy nanoparticles hybrid aerogel for high-performance microwave absorption 用于高性能微波吸收的轻质三维多孔芳纶纳米纤维/磁性合金纳米颗粒混合气凝胶
IF 44.5 1区 医学
The Lancet Diabetes & Endocrinology Pub Date : 2024-10-10 DOI: 10.1016/j.ceramint.2024.10.100
Jianghong Xu, Shu Liu, Sujuan Guo, Dan Guo, Jianyong Xiang, Fusheng Wen
{"title":"Lightweight three-dimensional porous aramid nanofibers/magnetic alloy nanoparticles hybrid aerogel for high-performance microwave absorption","authors":"Jianghong Xu, Shu Liu, Sujuan Guo, Dan Guo, Jianyong Xiang, Fusheng Wen","doi":"10.1016/j.ceramint.2024.10.100","DOIUrl":"https://doi.org/10.1016/j.ceramint.2024.10.100","url":null,"abstract":"Low density aerogels based on aramid nanofibers (ANFs) are promising candidate for microwave absorption materials. It is an arduous challenge to obtain lightweight microwave absorption materials with strong reflection loss (<em>RL</em>) and broad effective absorption bandwidth. In this paper, ANFs/FeCo hybrid aerogels were fabricated using ParaPhenylene TerephthalAmide (PPTA) as precursor via two-steps freeze-drying method, which offer three-dimensional network porous structure. ANFs/FeCo aerogel exhibited lightweight characteristic and excellent microwave absorption performance. The ultra-low density (14.35 mg cm<sup>-3</sup>) of ANFs/FeCo aerogel was lower than the one of CNTs. The improvement of microwave absorption performance of ANFs/FeCo aerogels can be attributed to the three-dimensional network porous structure of aerogels and the introduction of magnetic FeCo alloys nanoparticles which can induce a cooperative effect of proper impedance matching, conduction loss, polarization loss, magnetic loss, and multiple scatting. The <em>RL</em> and effective absorption bandwidth of ANFs/FeCo aerogels can be adjusted via changing the mass ration of ANFs and magnetic FeCo nanoparticles. ANFs/FeCo-3 aerogel exhibited ultra strong <em>RL</em> (-60.62 dB) and broad effective absorption bandwidth (4.8 GHz) under a thin thickness (1.75 mm). Our work can provide new insight into the design of lightweight microwave absorption material.","PeriodicalId":48790,"journal":{"name":"The Lancet Diabetes & Endocrinology","volume":"15 1","pages":""},"PeriodicalIF":44.5,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142431506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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