Diamond and Related Materials最新文献

Titanium and copper tailoring of fullerene (Cu-Ti@C60) as a sensor nanostructured for toxic gas pollutants: A DFT study

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-27 DOI: 10.1016/j.diamond.2025.112147

Ekpenyong O. Okon , Gideon E. Mathias , Musa Runde , Mohammed Yaqob , Ahmed Adnan AL-Khafagi

{"title":"Titanium and copper tailoring of fullerene (Cu-Ti@C60) as a sensor nanostructured for toxic gas pollutants: A DFT study","authors":"Ekpenyong O. Okon , Gideon E. Mathias , Musa Runde , Mohammed Yaqob , Ahmed Adnan AL-Khafagi","doi":"10.1016/j.diamond.2025.112147","DOIUrl":"10.1016/j.diamond.2025.112147","url":null,"abstract":"<div><div>Here, a fullerene-based (C<sub>60</sub>) material comprising sixty carbon atoms was selected due to its advantageous properties including sensitivity, electrical conductivity, and having a structure that can be readily modified. The C<sub>60</sub> bare surface was further doped with Ti, a metal, and then decorated with Cu to improve its overall properties and enhance its adsorption of NO<sub>2</sub>, NO, CO<sub>2</sub>, CO, and SO<sub>2</sub> gasses using the density function theory (DFT) computation conducted at the PBE0/LanL2DZ level of theory. The surface Cu-Ti@C<sub>60</sub> was studied at the O, N, and C sites to determine the sites exhibiting the highest adsorption strength for the studied gases. The NO₂-N-Cu-Ti@C<sub>60</sub> complex possessed the most significant adsorption energy of −14.3571 eV while the CO<sub>2</sub> binding at the O-site exhibited the lowest adsorption energy of −0.58638 eV. This indicates that the Cu-Ti@C<sub>60</sub> surface binds greatly to the NO<sub>2</sub> and NO gases with a good adsorption strength observed for SO<sub>2</sub> gas. Also, there was a minimal change in the energy gap of the surface after adsorption with studied gases which showcased the stability of the systems. These analyses carried out in this study position Cu-Ti@C<sub>60</sub> surface to be a promising material in developing a sensor device for NO<sub>2</sub>, NO, CO<sub>2</sub>, CO, and SO<sub>2</sub> with a strong adsorption rate for NO<sub>2</sub>, NO, SO<sub>2</sub>, CO, CO<sub>2</sub> in a descending sequence.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112147"},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529243","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

Low-temperature formation of pure SiC-modified layer on diamond surface by reaction with Mg2Si

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-27 DOI: 10.1016/j.diamond.2025.112159

Junguo Li , Feng Jiang , Chenhan Zhao , Shuaijie Huan , Fei Tang , Qianqian Xiang , Meijuan Li , Jian Zhang , Qiang Shen

引用次数: 0

Magnetic/ceramic/conductive nanocomposite with a broadband microwave absorption and an effective RCS and far field reduction

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-27 DOI: 10.1016/j.diamond.2025.112145

Hoda Hekmatara, Mahdieh Dehghani-Dashtabi, Seyyed Mahdy Baizaee, Masoud Mohebbi, Shabnam Nouradini

{"title":"Magnetic/ceramic/conductive nanocomposite with a broadband microwave absorption and an effective RCS and far field reduction","authors":"Hoda Hekmatara, Mahdieh Dehghani-Dashtabi, Seyyed Mahdy Baizaee, Masoud Mohebbi, Shabnam Nouradini","doi":"10.1016/j.diamond.2025.112145","DOIUrl":"10.1016/j.diamond.2025.112145","url":null,"abstract":"<div><div>Designing light weight and thin radar absorber composites with a broad absorption bandwidth which cover the whole frequency bands can be crucial to overcome the serious problem of electromagnetic pollution. FeNi-NiO/SiO<sub>2</sub>/GO‌‌‌‌‌‌ magnetic/ceramic/conductive nanocomposites which were prepared by decorating FeNi-NiO/SiO<sub>2</sub> magnetic/ceramic NPs on the GO sheets with the certain weight ratios of 1:1, 1:2 and 1:3 show broad absorption bandwidth at low thickness. The lowest reflection loss (RL<sub>min</sub> = −49.12 dB) was observed for FeNi-NiO/SiO<sub>2</sub>/GO 1:3 at 1.7 mm thick, with an effective bandwidth of 8.2GHz (8.23-18GHz). However, the broadest bandwidth was observed for the FeNi-NiO/SiO<sub>2</sub>/GO 1:1 at 1.7 mm, which covers the entire band in the range of 8-18GHz with RL<sub>min</sub> = −38.53 dB. An excellent microwave absorption performance of FeNi-NiO/SiO<sub>2</sub>/GO nanocomposites originated from dielectric/magnetic/conduction loss synergy. The radar cross section (RCS) and far field calculation showed that by covering a typical perfect electrical conductor (PEC) sphere with nanocomposites, the RCS and far field reduced 30-48 dB and 20-30 dB, respectively, in comparison with uncovered PEC.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112145"},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143529244","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

Exploring the friction mechanism of a-C:H:Si:O film under water-lubricated condition

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-27 DOI: 10.1016/j.diamond.2025.112162

Pingmei Yin , Renlong Dai , Lei Yang , Zhengyu Liu , Xubing Wei , Yifei Xu , Wangjun Cheng , Yaoning Sun , Guangan Zhang

{"title":"Exploring the friction mechanism of a-C:H:Si:O film under water-lubricated condition","authors":"Pingmei Yin , Renlong Dai , Lei Yang , Zhengyu Liu , Xubing Wei , Yifei Xu , Wangjun Cheng , Yaoning Sun , Guangan Zhang","doi":"10.1016/j.diamond.2025.112162","DOIUrl":"10.1016/j.diamond.2025.112162","url":null,"abstract":"<div><div>In this study, comparing friction behaviors of a-C:H:Si:O films under dry-friction and water-lubricated conditions revealed key findings. Under water-lubricated condition, the wear rate of a-C:H:Si:O films exhibit a trend of initial decrease followed by an increase with increasing Si content. Specifically, at a Si content of 7.8 at.%, the wear rate of the films drops significantly from 13.0 × 10<sup>−8</sup> mm<sup>3</sup>/Nm under dry-friction to 1.40 × 10<sup>−8</sup> mm<sup>3</sup>/Nm under water-lubricated condition, demonstrating excellent wear resistance. However, when the Si content increases to 14.1 at.%, the wear rate gradually rises to 17.10 × 10<sup>−8</sup> mm<sup>3</sup>/Nm. This increase is primarily attributed to intensified tribo-chemical reactions induced by excessively high Si content, coupled with the mobility of water facilitating the migration of wear debris to the friction interface, ultimately leading to abrasive wear. This finding not only reveals the influence of Si content on the wear resistance of the films but also provides an important basis for optimizing tribological performance under water-lubricated condition.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112162"},"PeriodicalIF":4.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527351","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

Hydrogenated diamond-like carbon films grown by a beam plasma source

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-26 DOI: 10.1016/j.diamond.2025.112138

Tabitha A. Amollo , Keliang Wang , Nina Baule , Lars Haubold , Qi Hua Fan

{"title":"Hydrogenated diamond-like carbon films grown by a beam plasma source","authors":"Tabitha A. Amollo , Keliang Wang , Nina Baule , Lars Haubold , Qi Hua Fan","doi":"10.1016/j.diamond.2025.112138","DOIUrl":"10.1016/j.diamond.2025.112138","url":null,"abstract":"<div><div>Diamond like carbon (DLC) is an amorphous form of carbon consisting of <em>sp</em><sup><em>2</em></sup> and <em>sp</em><sup><em>3</em></sup> hybridized carbon atoms and hydrogen. It is characterized by unique properties which suit it as a protective coating in various applications. DLC thin films are commonly produced by plasma-enhanced chemical vapor deposition (PECVD). This study reports the growth of hydrogenated DLC thin films using a novel broad beam plasma source, which enables simultaneous ion bombardments to the surface atoms and produces dense films at room temperature. A key advantage of the broad beam ion source is that it can independently control the ion flux and ion energy (20–200 eV) and thus, DLC film microstructures and properties. The film growth rates were proportional to the ion flux density, which in turn was proportional to the plasma density. An optimum ion energy of ~120 eV was identified. The DLC films exhibited high optical transmittance of 90 % from the visible to the infrared region. The optical band gaps were in the range of 2.20–2.28 eV. The prepared films exhibited a density of 1.905 g/cm<sup>3</sup> and Young's modulus of 75 GPa. A potential application of such DLC films is as moisture barrier coatings on plastics, which require low-temperature processing.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112138"},"PeriodicalIF":4.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527350","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

Selective H2S sensor with CdS@PPy/rGO nanocomposite for sustainable air quality monitoring

IF 4.3 3区材料科学

Diamond and Related Materials Pub Date : 2025-02-26 DOI: 10.1016/j.diamond.2025.112155

H.M. Ragab , N.S. Diab , Ghadah Mohammad Aleid , Rosilah Ab Aziz , Sofian Talal Obeidat , N. Yusof , Maamon A. Farea

{"title":"Selective H2S sensor with CdS@PPy/rGO nanocomposite for sustainable air quality monitoring","authors":"H.M. Ragab , N.S. Diab , Ghadah Mohammad Aleid , Rosilah Ab Aziz , Sofian Talal Obeidat , N. Yusof , Maamon A. Farea","doi":"10.1016/j.diamond.2025.112155","DOIUrl":"10.1016/j.diamond.2025.112155","url":null,"abstract":"<div><div>In this study, a highly sensitive and selective H₂S gas sensor was developed using a CdS@PPy/rGO nanocomposite synthesized through a facile fabrication process. Conductivity, sensitivity, response/recovery durations, stability, and selectivity were all significantly enhanced by the incorporation of reduced graphene oxide (rGO) and cadmium sulfide (CdS) nanoparticles into the polypyrrole (PPy) matrix. The chemoresistive sensor exhibited a remarkable response of 98.98 % to 70 ppm of H<sub>2</sub>S gas, which is approximately five times higher than pure PPy and three times higher than the PPy/rGO hybrids. Notably, the sensor demonstrated remarkable stability over 50 days with no performance deterioration, and it exhibited quick reaction and recovery times of 128 s and 131 s, respectively. Furthermore, the CdS@PPy/rGO sensor demonstrated excellent selectivity towards H<sub>2</sub>S, maintaining its high performance even in the presence of interfering gases such as SO<sub>2</sub>, NH<sub>3</sub>, CO, and NO<sub>2</sub>. Mechanistic analysis revealed that the synergistic effect of rGO and CdS nanoparticles enhanced the adsorption and electron transfer interactions between the composite and H<sub>2</sub>S molecules. This work highlights the potential of CdS@PPy/rGO nanocomposites as advanced materials for real-time environmental monitoring and industrial safety applications.</div></div>","PeriodicalId":11266,"journal":{"name":"Diamond and Related Materials","volume":"154 ","pages":"Article 112155"},"PeriodicalIF":4.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143510888","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

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