Diamond and Related Materials最新文献_第2页

Construction of boron carbide phase to improve the thermal insulation and mechanical properties of carbon aerogel

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-25 DOI: 10.1016/j.diamond.2025.112150

Hongli Liu , Wenjing Zu , Wenjin Yuan , Peng Chu , Yuhao Liu , Weiqiang Xie , Yao Song , Kun Yu , Chenghao Bian , Ziyang Peng

{"title":"Construction of boron carbide phase to improve the thermal insulation and mechanical properties of carbon aerogel","authors":"Hongli Liu , Wenjing Zu , Wenjin Yuan , Peng Chu , Yuhao Liu , Weiqiang Xie , Yao Song , Kun Yu , Chenghao Bian , Ziyang Peng","doi":"10.1016/j.diamond.2025.112150","DOIUrl":"10.1016/j.diamond.2025.112150","url":null,"abstract":"<div><div>Carbon aerogels with nanoporous structures provide enormous potential applications in diverse fields. However, traditional carbon aerogels failed to satisfy the requirements for both thermal insulation and mechanical properties. In this paper, boron-modified carbon aerogels (B/CA), based on linear phenolic resin precursors and phenylboronic acid, are prepared by supercritical drying and high-temperature carbonization. During the carbonization process, a small amount of boron carbide phase is formed. Heat will be consumed due to multiple reflections at the phase interface, which improves the thermal insulation properties. Besides, these boron carbide grains can efficiently disperse the stress load and enhance the mechanical properties of the carbon aerogels. The resulting B/CAs possess low density (0.203 g cm<sup>−3</sup>), high compressive strength (1.94 MPa), and low thermal conductivity (0.0475 W·m<sup>−1</sup>·K<sup>−1</sup> at 25 °C). These integrated superiorities make B/CA have great application prospects in high temperature insulation, especially in harsh conditions.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112150"},"PeriodicalIF":4.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509985","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}

引用次数: 0

Highly sensitive detection of drug, and energy storage based on electrochemical system by using transition metal sulfides@carbon nanotubes nanocomposites electrodes 使用过渡金属硫化物@碳纳米管纳米复合材料电极的基于电化学系统的高灵敏度药物检测和能量储存技术

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-25 DOI: 10.1016/j.diamond.2025.112144

Rustem R. Zairov , Muhammad Umar Farooq , Baraa Mohammed Yaseen , Rafid Jihad Albadr , Waam Mohammed Taher , Mariem Alwan , Mahmood Jasem Jawad , Hiba Mushtaq , Baadal Jushi Janani

{"title":"Highly sensitive detection of drug, and energy storage based on electrochemical system by using transition metal sulfides@carbon nanotubes nanocomposites electrodes","authors":"Rustem R. Zairov , Muhammad Umar Farooq , Baraa Mohammed Yaseen , Rafid Jihad Albadr , Waam Mohammed Taher , Mariem Alwan , Mahmood Jasem Jawad , Hiba Mushtaq , Baadal Jushi Janani","doi":"10.1016/j.diamond.2025.112144","DOIUrl":"10.1016/j.diamond.2025.112144","url":null,"abstract":"<div><div>In this study, the hydrothermal method was utilized for the preparation of tin niobium sulfide (SnNbS<sub>3</sub>), and decorated on carbon nanotubes (CNT). The substantial nanostructure of the prepared electrode material (SnNbS<sub>3</sub>/CNT) suggests channels for ion mobilization and electrochemical activity. Also, the effect of different temperatures was investigated on activity of the prepared electrode to achieve the optimum values. The specific capacity (Qs) of the SnNbS<sub>3</sub>/CNT is measured 598.2 Cg<sup>−1</sup> at 5 mVs<sup>−1</sup>. The SnNbS<sub>3</sub>/CNT shows an effective energy density (E<sub>d</sub>) of 60 Whkg<sup>−1</sup>, and a remarkable power density (P<sub>d</sub>) of 850.2 W kg<sup>−1</sup>. In addition, the SnNbS<sub>3</sub>/CNT depicts the columbic efficiency (CE) about 92.43 %. Moreover, the SnNbS<sub>3</sub>/CNT sensor presents excellent responses for detection of dopamine (DA) in human serum, with range about 101.6–102.1 %. The prepared SnNbS<sub>3</sub>/CNT nanocomposite electrode presents new results to prepare hybrid functional in energy storage and biomedical performances.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112144"},"PeriodicalIF":4.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488229","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}

引用次数: 0

Polyoxometalate decorated graphene oxides sheets for simultaneous non-enzymatic electrochemical detection of biomolecules

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-25 DOI: 10.1016/j.diamond.2025.112148

Rehana Zia , Muhammad Ahmad , Maryam Kaleem , Salih Akyürekli , Sadaf Ul Hassan , Osama A. Mohammed , Fatimah M. Alzahrani , Munawar Iqbal , Abid Ali

{"title":"Polyoxometalate decorated graphene oxides sheets for simultaneous non-enzymatic electrochemical detection of biomolecules","authors":"Rehana Zia , Muhammad Ahmad , Maryam Kaleem , Salih Akyürekli , Sadaf Ul Hassan , Osama A. Mohammed , Fatimah M. Alzahrani , Munawar Iqbal , Abid Ali","doi":"10.1016/j.diamond.2025.112148","DOIUrl":"10.1016/j.diamond.2025.112148","url":null,"abstract":"<div><div>A novel Wells-Dawson type Polyoxometalates (POM) in combination with graphene oxide (GO) has been developed as a non-enzymatic electrochemical sensor for the detection of ascorbic acid and uric acid. The electrochemical detection of these biomolecules is crucial in biomedical analysis, offering high sensitivity, selectivity, and rapid detection. This method significantly contributes to physiology, disease diagnostics, therapeutic monitoring, and the advancement of portable biosensor technologies. As prepared POM@GO composite was characterized using various techniques including X-ray diffraction crystallography (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive x-ray (EDX) spectroscopy to confirm the functional groups, crystal structure, morphology and elemental composition, respectively. Uniformly dispersed POM over conductively efficient GO boosted the catalytic performance synergies via active site and enlarge surface area provided by the POM and GO, respectively. As fabricated composite improved sensitivity towards individual and simultaneous electrochemical detection of ascorbic acid and uric acid. POM@GO over glassy carbon electrode showed a higher sensitivity of 10.24 μAcm<sup>−2</sup> mM<sup>−1</sup> and 5.27 μAcm<sup>−2</sup> mM<sup>−1</sup>, lower detection limit of 46 μM and 47 μM and a linear range of up to 1.5 mM for AA and UA, respectively.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112148"},"PeriodicalIF":4.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511639","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}

引用次数: 0

Mesoporous carbon from Vateria indica fruit for efficient 2,4-D herbicide removal: Mechanistic insights from double-layer statistical physics modelling and regeneration studies

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-24 DOI: 10.1016/j.diamond.2025.112149

Ramesh Vinayagam , Sanjana Jogi , Gokulakrishnan Murugesan , Louella Concepta Goveas , Thivaharan Varadavenkatesan , Adithya Samanth , Raja Selvaraj

{"title":"Mesoporous carbon from Vateria indica fruit for efficient 2,4-D herbicide removal: Mechanistic insights from double-layer statistical physics modelling and regeneration studies","authors":"Ramesh Vinayagam , Sanjana Jogi , Gokulakrishnan Murugesan , Louella Concepta Goveas , Thivaharan Varadavenkatesan , Adithya Samanth , Raja Selvaraj","doi":"10.1016/j.diamond.2025.112149","DOIUrl":"10.1016/j.diamond.2025.112149","url":null,"abstract":"<div><div>The widespread application of herbicides like 2,4-Dichlorophenoxyacetic acid (2,4-D) poses significant environmental risks due to their persistence and toxicity. This study presents a sustainable, chemical-free synthesis of mesoporous activated carbon (AC) from <em>Vateria indica</em> fruit, utilizing hydrothermal treatment followed by physical activation. The resulting AC exhibited a high specific surface area (327.46 m<sup>2</sup>/g) and a mesoporous architecture, contributing to enhanced adsorption performance. Adsorption experiments demonstrated maximum 2,4-D removal capacity of 226.23 mg/g at 323 K, with optimal conditions observed at pH 2 and an adsorbent dosage of 0.25 g/L. Kinetic analysis indicated adherence to a pseudo-second-order model, while isotherm and thermodynamic studies suggested a physisorption-dominated mechanism. Advanced double-layer statistical physics modelling further revealed a dual-layer adsorption mechanism governing the process. Notably, the AC retained approximately 80 % efficiency after five regeneration cycles using 0.01 N NaOH, surpassing many conventional adsorbents reported in literature. These results highlight the potential of <em>V. indica</em> fruit-derived AC as a cost-effective and eco-friendly material for herbicide removal, with significant implications for sustainable water treatment technologies.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112149"},"PeriodicalIF":4.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509986","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}

引用次数: 0

Voltammetric detection of paracetamol using a novel Sonogel-Carbon material modified with monocalcium phosphate: An experimental and theoretical approach

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-23 DOI: 10.1016/j.diamond.2025.112141

Mohamed Achache , Juan José García-Guzmán , Nordin Ben Seddik , Laura Cubillana-Aguilera , José María Palacios-Santander , Dounia Bouchta , Mohamed Choukairi

{"title":"Voltammetric detection of paracetamol using a novel Sonogel-Carbon material modified with monocalcium phosphate: An experimental and theoretical approach","authors":"Mohamed Achache , Juan José García-Guzmán , Nordin Ben Seddik , Laura Cubillana-Aguilera , José María Palacios-Santander , Dounia Bouchta , Mohamed Choukairi","doi":"10.1016/j.diamond.2025.112141","DOIUrl":"10.1016/j.diamond.2025.112141","url":null,"abstract":"<div><div>A highly sensitive and selective electrochemical sensor was developed by modifying a sonogel-carbon electrode with monocalcium phosphate (MCP/SNGCE) for the first time detection of paracetamol (PCT). The sensor electrochemical properties were characterized using electrochemical impedance spectroscopy and cyclic voltammetry. MCP incorporation into the silica network increased the electroactive surface area by ~45 % and reduced charge transfer resistance by 39 % compared to the unmodified electrode, enhancing electron transfer at the electrode/solution interface. Surface characterization confirmed successful MCP integration, indicated by a characteristic X-ray diffraction peak at 7.52° and a shift in the Si-CH<sub>3</sub> band from 760 cm<sup>−1</sup> (SNGCE) to 765 cm<sup>−1</sup> (MCP/SNGCE) in the Fourier-transform infrared spectroscopy, reflecting improved electrocatalytic activity towards PCT oxidation. Differential pulse voltammetry revealed a linear detection range for PCT from 0.05 μM to 24 μM, with a detection limit of 0.01 μM. The sensor exhibited high sensitivity (36.541 μA cm<sup>−2</sup> μM<sup>−1</sup>), excellent repeatability, reproducibility with a relative standard deviation (RSD) <4 %, and stable performance over 30 days. Theoretical approaches and Monte Carlo simulations and topological analyses provided further insights, showing PCT adsorbs inclined on the MCP surface via semi-covalent interactions between hydrogen atoms H19 (-CH<sub>3</sub> group) and H13 (benzene ring), with a maximum interaction energy of −1427 kcal mol<sup>−1</sup>. The sensor was successfully applied to PCT detection in tap water, pharmaceutical tablets, and simulated blood serum, achieving recovery rates of 98.1–104 %, 97.78–105.61 %, and 100.15–102.5 %, respectively.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112141"},"PeriodicalIF":4.3,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143487535","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}

引用次数: 0

Study of special burr defects in high‑nitrogen diamonds synthesized with NiMnCo catalysts

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-22 DOI: 10.1016/j.diamond.2025.112140

Hongyu Zhao , Zhenze Yang , Zhiwen Wang , Longsuo Guo , Bowei Li , Shengxue Wang , Hongan Ma , Liangchao Chen , Xiaopeng Jia

{"title":"Study of special burr defects in high‑nitrogen diamonds synthesized with NiMnCo catalysts","authors":"Hongyu Zhao , Zhenze Yang , Zhiwen Wang , Longsuo Guo , Bowei Li , Shengxue Wang , Hongan Ma , Liangchao Chen , Xiaopeng Jia","doi":"10.1016/j.diamond.2025.112140","DOIUrl":"10.1016/j.diamond.2025.112140","url":null,"abstract":"<div><div>Macroscopic and microscopic defect control in diamonds is a key research area in both diamond synthesis and its applications. High‑nitrogen diamonds have received significant attention in both research and industry owing to their unique properties, which result from nitrogen impurities. Therefore, the preparation of high-quality high‑nitrogen diamonds has emerged as a focal point of interest in recent years. This study thoroughly analyzed the causes of local burrs in high‑nitrogen diamonds synthesized with the NiMnCo catalyst and introduced corresponding strategies to address this issue. Optical microscopy, scanning electron microscopy, Fourier-transform infrared spectroscopy, and X-ray diffraction results reveal that on the one hand, the burr is caused by the complex effect of the interaction of hard phase particles (such as MnO) and fluid-rich growth media with carbon and metal catalyst melt. On the other hand, during cooling, the hard phase (such as MnO) generated in the metal catalyst melt rich in highly saturated C–N–H–O fluid precipitates out. The destruction of diamond surface morphology. Raman spectroscopy and X-ray photoelectron spectroscopy results indicate that the use of the FeNi catalyst in diamond synthesis prevents burr formation and effectively reduces residual stress. Additionally, increasing synthesis pressure and applying hydrogen doping can further reduce burrs and residual stress in the diamond.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112140"},"PeriodicalIF":4.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143474866","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}

引用次数: 0

Thermal stability of graphene-oxide nanofluids during enhanced convective heat transfer in a spacecraft fluid loop 石墨烯-氧化物纳米流体在航天器流体回路中增强对流传热过程中的热稳定性

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-22 DOI: 10.1016/j.diamond.2025.112142

Mingjie Bai , Jinlong Liu , Junjun Wei , Liangxian Chen , Lin Lin , Jianyin Miao , Chengming Li

{"title":"Thermal stability of graphene-oxide nanofluids during enhanced convective heat transfer in a spacecraft fluid loop","authors":"Mingjie Bai , Jinlong Liu , Junjun Wei , Liangxian Chen , Lin Lin , Jianyin Miao , Chengming Li","doi":"10.1016/j.diamond.2025.112142","DOIUrl":"10.1016/j.diamond.2025.112142","url":null,"abstract":"<div><div>Owing to their excellent thermal conductivity, nanofluids are widely used in solar collectors, automotive radiators, and spacecraft thermal management systems. However, the thermal stability and reliability of nanofluid systems limit their heat-transfer performance. This study investigated the stability and reliability of typical water-based graphene-oxide nanofluids under the simulated working conditions of a practical spacecraft fluid-loop system. Nanofluid stability was evaluated in the room-temperature static state, room-temperature flow state, heated static state, and heated flow state; the instability mechanism was also studied. The volume fraction of nano graphenes in the nanofluids decreased with increasing heating time and temperature and was independent of the motion state. The volume fraction remains above 90 % of the pristine sample between 298 K–358 K, showing a relatively stable state, and its stability decreased rapidly at 373 K. In the heated flow state, graphene-oxide sheet edges folded owing to the high temperature, decreasing the specific surface area and the contact area of the graphene-oxide sheets during convective heat transfer, which is responsible for the degraded heat transfer performance. Graphene-oxide sheet folding was mainly driven by the competition between the graphene–water binding energy and graphene-oxide bending energy. This study provides stability criteria for graphene oxide–deionised water nanofluids for practical applications and reveals the instability mechanism.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112142"},"PeriodicalIF":4.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143479085","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}

引用次数: 0

Comparison of biomaterials produced from carbonatization, hydrothermal reaction and chemical activation: Characterization, CO2 capture and mechanism

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-22 DOI: 10.1016/j.diamond.2025.112139

Şeyda Karadirek

{"title":"Comparison of biomaterials produced from carbonatization, hydrothermal reaction and chemical activation: Characterization, CO2 capture and mechanism","authors":"Şeyda Karadirek","doi":"10.1016/j.diamond.2025.112139","DOIUrl":"10.1016/j.diamond.2025.112139","url":null,"abstract":"<div><div>This study examines the development of carbon-based materials as an affordable bio-sorbent for low-temperature CO<sub>2</sub> adsorption. Therefore, pea peel (BM) was suggested as a lignocellulosic precursor for the synthesis of activated carbon (AC), activated hydrochar (AHC), biochar (BC) and hydrochar (HC) through various techniques such as hydrothermal carbonization, direct carbonization, and chemical activation. Hydrothermal carbonization was performed to produce HC in a Teflon-lined autoclave at 210 °C for 24 h. HC and BM were impregnated with KOH to produce AHC and AC, respectively. Following the impregnation step, the materials were adjusted to the carbonization process at 500 °C for an hour. BC was produced by direct carbonization of BM without hydrothermal treatment and KOH activation. To obtain BC, the carbonization of BM was carried out at the same conditions as AC and AHC.</div><div>The N<sub>2</sub> adsorption/desorption results of BM and the as-obtained carbonaceous materials demonstrated that AC exhibited the largest surface area and the smallest pore diameter of 693.67 m<sup>2</sup>/g and 0.9 nm, respectively, whereas the pore volume was nearly 90 times more than that of BC which was in accordance with the CO<sub>2</sub> capture capacity. AC achieved the highest CO<sub>2</sub> adsorption performance with a capacity of 3 mmol/g. A significantly high carbon content of activated carbon (66.26 %) was obtained via the carbonization process of biomass. The results suggested that the chemical activation and carbonization steps provided advanced textural properties, which are favorable for efficient adsorbents to be utilized in the CO<sub>2</sub> adsorption process.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112139"},"PeriodicalIF":4.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510101","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}

引用次数: 0

Laser processing and grinding performance evaluation of CVD diamond micro tool

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-22 DOI: 10.1016/j.diamond.2025.112108

Jianfei Jia , Bing Guo , Wei Yang , Jun Qin , Guicheng Wu , Kenan Li , Jianhui Zhu , Zhongbo Zhang , Honghui Yao

引用次数: 0

The synergistic effect of metal oxide templates and salt activation for supercapacitor materials in neutral, alkaline, and organic electrolytes

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-21 DOI: 10.1016/j.diamond.2025.112134

Pengfei Dong, Xueyan Wu, Hongxia Gao, Yan Lv, Rui Xue, Yanchun Pei, Jixi Guo

{"title":"The synergistic effect of metal oxide templates and salt activation for supercapacitor materials in neutral, alkaline, and organic electrolytes","authors":"Pengfei Dong, Xueyan Wu, Hongxia Gao, Yan Lv, Rui Xue, Yanchun Pei, Jixi Guo","doi":"10.1016/j.diamond.2025.112134","DOIUrl":"10.1016/j.diamond.2025.112134","url":null,"abstract":"<div><div>This study investigates the synthesis of high-performance 2D carbon nanosheets (CNs-Mg-Zn) via a synergistic approach combining MgO templating and ZnCl₂ activation. Utilizing coal as the carbon source and urea as a doping agent, CNs-Mg-Zn were prepared, achieving a specific surface area of 1638 m<sup>2</sup> g<sup>−1</sup> and pore volume of 1.37 cm<sup>3</sup> g<sup>−1</sup>. In a three-electrode system, the material exhibited a capacitance of 343 F g<sup>−1</sup> at 0.5 A g<sup>−1</sup>. The assembled symmetrical supercapacitors (SCs) assembled from CNs-Mg-Zn demonstrated energy densities of 12, 21.4, and 48.5 Wh kg<sup>−1</sup> in 6 M KOH, 1 M Na₂SO₄, and 1 M TEABF₄/AN, respectively, with 97.4 % capacitance retention after 10,000 cycles. This study proposes a method for preparing carbon nanosheets by utilizing MgO templates in combination with ZnCl<sub>2</sub> activation. This method provides a promising approach for the large-scale preparation of advanced electrode materials.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112134"},"PeriodicalIF":4.3,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465018","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}

引用次数: 0