Diamond and Related Materials最新文献_第9页

Fabrication, characterization and application of carbon molecular wire electrodes for the determination of dopamine, uric acid and paracetamol

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-26 DOI: 10.1016/j.diamond.2025.112156

Zahra Moradian, Behzad Haghighi

{"title":"Fabrication, characterization and application of carbon molecular wire electrodes for the determination of dopamine, uric acid and paracetamol","authors":"Zahra Moradian, Behzad Haghighi","doi":"10.1016/j.diamond.2025.112156","DOIUrl":"10.1016/j.diamond.2025.112156","url":null,"abstract":"<div><div>Two molecular wires, trans-stilbene (STB) and trans,trans-1,4-diphenyl-1,3-butadiene (DPBD), as binders and two carbonaceous materials, multi-walled carbon nanotubes (MWCNTs) and graphite, as conductive phases were used to fabricate carbon composite electrodes so called carbon molecular wire electrodes (CMWEs). Cyclic voltammetry studies using [Fe(CN)<sub>6</sub>]<sup>3-/4-</sup> as general redox probes revealed that the prepared CMWEs using MWCNTs present superior electrochemical properties compare to that prepared using graphite. So, MWCNTs were selected as the conductive phase and two CMWEs were fabricated using STB and DPBD as binders. Thereafter, the electroanalytical properties of the fabricated CMWEs were evaluated for the determination of dopamine, uric acid and paracetamol using differential pulse voltammetry (DPV). Linear relationships were observed between the peak current intensity of DPV responses and concentrations of DA, UA and PA in the range between 1.0 × 10<sup>−6</sup> and 1.0 × 10<sup>−4</sup> M for both CMWEs prepared by STB and DPBD. The limits of detection for the determination of DA, UA and PA were 0.1, 0.4 and 0.2 μM using CMWE prepared by STB and 0.2, 0.3 and 0.3 μM using CMWE prepared by DPBD, respectively. The relative standard deviations of DPV responses towards the investigated analytes using both CMWEs for reproducibility (<em>n</em> = 5) and repeatability (<em>n</em> = 5) studies were better than 4.0 %. The effect of the presence of possible interfering species on analyte signals was examined and the fabricated CMWEs were then applied for the determination of DA, UA and PA in human blood serum samples.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112156"},"PeriodicalIF":4.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510885","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

Influence of MWCNT transfer on the properties of MWCNT/PLA/PE blends

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-25 DOI: 10.1016/j.diamond.2025.112152

Mohammed H. Al-Saleh, Hiba M. Malas

{"title":"Influence of MWCNT transfer on the properties of MWCNT/PLA/PE blends","authors":"Mohammed H. Al-Saleh, Hiba M. Malas","doi":"10.1016/j.diamond.2025.112152","DOIUrl":"10.1016/j.diamond.2025.112152","url":null,"abstract":"<div><div>The influence of carbon nanotubes (CNTs) transfer and mixing time on the microstructure, processing behavior, electrical resistivity, and electromagnetic interference (EMI) shielding characteristics of 80/20 vol/vol polylactic acid (PLA)/high-density polyethylene (HDPE) blend filled with 5 wt% (3.7 vol%) CNTs were investigated. For CNTs-filled PLA/HDPE blends, it is known that CNTs selectively localize in the HDPE domain. Thus, in this work, CNTs were initially premixed with the PLA, and then the HDPE was added to monitor the nanotubes transfer and investigate the effects of nanotubes transfer from the PLA phase to the HDPE phase on the composite properties. The analysis of scanning electron microscope graphs showed that most of the nanotubes transferred from the PLA phase to the HDPE phase in less than 1.0 min without any accumulation of the nanotubes at the PLA/HDPE interface. The CNTs/PLA/HDPE composite exhibited an increase in electrical resistivity and a decrease in EMI shielding with the increase in CNTs transfer time. For example, the EMI shielding decreased from 22.7 dB to 16.8 dB by increasing the transfer time from 1 min to 2 min. Thus, preparing the blends at the shortest possible mixing time is recommended to obtain the highest possible EMI performance.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112152"},"PeriodicalIF":4.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510102","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

Hydrothermally synthesized a pyrochlore-type composite (rGO@Sr3Mn2O7) an effective electrocatalyst for Oxygen Evolution Reaction (OER) 水热合成的热绿石型复合材料（rGO@Sr3Mn2O7）是氧气进化反应（OER）的有效电催化剂

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-25 DOI: 10.1016/j.diamond.2025.112143

Areesha Khan , Sarah A. Alsalhi , Abdullah G. Al-Sehemi , Abhinav Kumar

{"title":"Hydrothermally synthesized a pyrochlore-type composite (rGO@Sr3Mn2O7) an effective electrocatalyst for Oxygen Evolution Reaction (OER)","authors":"Areesha Khan , Sarah A. Alsalhi , Abdullah G. Al-Sehemi , Abhinav Kumar","doi":"10.1016/j.diamond.2025.112143","DOIUrl":"10.1016/j.diamond.2025.112143","url":null,"abstract":"<div><div>Numerous environmental issues, comprising global warming and depletion of fuel supplies forced the scientist to use ecologically friendly power generating sources in the modern world. Electrocatalytic water splitting (EWS) is greatly beneficial method for obtaining energy from renewable sources. However, the substantial overpotential (η) required for sluggish OER presents an obstacle to its extensive potential. We synthesized rGO@Sr<sub>3</sub>Mn<sub>2</sub>O<sub>7</sub> catalyst utilizing hydrothermal route to serve as an electrocatalyst for OER. The developed electrocatalyst exhibits enhanced OER performance in comparison to pure Sr<sub>3</sub>Mn<sub>2</sub>O<sub>7</sub>. The prepared rGO@Sr<sub>3</sub>Mn<sub>2</sub>O<sub>7</sub> catalyst has undergone extensive examination through various analytical techniques. Electrocatalytic performance of fabricated rGO@Sr<sub>3</sub>Mn<sub>2</sub>O<sub>7</sub> was evaluated in 1 M alkaline media which revealed minimal η (195 mV), a less Tafel value (36 mV/dec) at current density (C<sub>d</sub>) of 10 mA/cm<sup>2</sup> and least charge transfer resistance (R<sub>ct</sub> = 0.18 Ω). Furthermore, the measured ECSA value for the composite was 1242 cm<sup>−2</sup>, while the TOF value for the composite was 2.12 s<sup>−1</sup>. The composite exhibited stability for (35 h), as assessed through chronoamperometry. The exceptional activity of produced catalyst can be attributed to rGO distributed on Sr<sub>3</sub>Mn<sub>2</sub>O<sub>7</sub> surface, which supports in improving electron conduction. The integration of rGO and Sr<sub>3</sub>Mn<sub>2</sub>O<sub>7</sub> leads to increased SSA, diverse active spots, reduced resistivity and exceptional stability, thereby enhancing the effectiveness of OER process. Hence, the electrocatalytic electrode displays noteworthy long-lasting durability for OER, presenting it as a favorably encouraging replacement to catalysts for future purposes.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112143"},"PeriodicalIF":4.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519346","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

Controllable preparation of solid-state fluorescent polymer dots by gaseous detonation

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-25 DOI: 10.1016/j.diamond.2025.112151

Saiwei Cheng , Weikai Xu , Chuang He , Shengbo Zhou , Honghao Yan

{"title":"Controllable preparation of solid-state fluorescent polymer dots by gaseous detonation","authors":"Saiwei Cheng , Weikai Xu , Chuang He , Shengbo Zhou , Honghao Yan","doi":"10.1016/j.diamond.2025.112151","DOIUrl":"10.1016/j.diamond.2025.112151","url":null,"abstract":"<div><div>Polymer dots (PDs) have attracted significant research interest owing to their remarkable optical properties. However, high-performance PDs often suffer from severe aggregation-induced fluorescence quenching in the solid state, limiting their practical applications. The gaseous detonation method offers a promising approach for synthesizing PDs while overcoming this limitation. Despite its potential, the relationship between detonation reaction conditions and the morphology and optical properties of PDs remains largely unexplored. This study systematically investigates the effects of varying the total precursor mass (citric acid (CA) and urea), the molar ratio of H<sub>2</sub> to O<sub>2</sub>, and the mass ratio of CA to urea on the morphology and optical properties of PDs. The results indicate that the initial reaction conditions, including the total mass of precursors, the molar ratio of H<sub>2</sub> to O<sub>2</sub>, and the mass ratio of CA to urea, affect the microstructure (average particle size, crystallinity) and photoluminescence quantum yield (PLQY) of the prepared PDs. However, it was found that these conditions have almost no effect on the ultraviolet-visible (UV–Vis) spectra, photoluminescence (PL) emission spectra, and the types of surface groups of the products. This study provides a theoretical foundation for optimizing the preparation of PDs using the gaseous detonation method.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112151"},"PeriodicalIF":4.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527352","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

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