Carbon Trends最新文献_第7页

EDITORIAL: Forging paths: Ecuadorian students driving the future of nanoscience

IF 3.1

Carbon Trends Pub Date : 2024-12-01 DOI: 10.1016/j.cartre.2024.100426

Charlotte Berrezueta-Palacios

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Effect of artificial aging on physicochemical properties of bone char and adsorption properties of Cd2+

IF 3.1

Carbon Trends Pub Date : 2024-12-01 DOI: 10.1016/j.cartre.2024.100441

Linchao Hu, Jinbao Wan, Kaixin Tang, Haoran Yu, Tao Huang, Dongyuan Fan, Wenyi Zhang, Linqiang Mao

{"title":"Effect of artificial aging on physicochemical properties of bone char and adsorption properties of Cd2+","authors":"Linchao Hu, Jinbao Wan, Kaixin Tang, Haoran Yu, Tao Huang, Dongyuan Fan, Wenyi Zhang, Linqiang Mao","doi":"10.1016/j.cartre.2024.100441","DOIUrl":"10.1016/j.cartre.2024.100441","url":null,"abstract":"<div><div>Biochar is a good adsorbent and has been widely used to repair heavy metal soils. However, aging will affect the physical and chemical properties of biochar, and then affect its adsorption performance on heavy metals. This study explored the impact of aging on the adsorption performance of biochar derived from bovine bone char, prepared at 350 °C and 550 °C through oxygen-limited carbonization. The bone chars were simulated aging by H<sub>2</sub>O<sub>2</sub> and Na<sub>2</sub>S<sub>2</sub>O<sub>8</sub>, with Cd<sup>2+</sup> as the target ions for adsorption. This study examined the effect on the physical and chemical properties of bone char prepared by different aging degrees, assessing its adsorption efficiency for Cd. The results showed that the oxidative aging led to a rough surface and increased Cd adsorption. The surface of bone char was smooth and bar like without obvious granular matter after acidification aging, inhibiting Cd adsorption. In addition, Oxidation aging increased the surface complexation of bone char and decreased ion exchange. The coprecipitation of bone char and the cationic Caution-π action were seriously inhibited by acidification aging. The findings of this study provide valuable insights and promising applications for the use of animal bones as a strategy for the remediation of Cd<sup>2+</sup> pollution.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"17 ","pages":"Article 100441"},"PeriodicalIF":3.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phonon transports in single-walled carbon nanotube films with different structures determined by tensile tests and thermal conductivity measurements

IF 3.1

Carbon Trends Pub Date : 2024-12-01 DOI: 10.1016/j.cartre.2024.100435

Hisatoshi Yamamoto , Yutaro Okano , Keisuke Uchida , Makoto Kageshima , Toru Kuzumaki , Shugo Miyake , Masayuki Takashiri

{"title":"Phonon transports in single-walled carbon nanotube films with different structures determined by tensile tests and thermal conductivity measurements","authors":"Hisatoshi Yamamoto , Yutaro Okano , Keisuke Uchida , Makoto Kageshima , Toru Kuzumaki , Shugo Miyake , Masayuki Takashiri","doi":"10.1016/j.cartre.2024.100435","DOIUrl":"10.1016/j.cartre.2024.100435","url":null,"abstract":"<div><div>The phonon transport properties of single-walled carbon nanotubes (SWCNTs) undergo significant changes when shaped into individuals, bundles, or films. Among these, SWCNT films are the most useful for industrial applications; however, their phonon transport properties have not been thoroughly investigated. This study estimated the phonon transport properties—specifically, the sound velocity, lattice thermal conductivity, and phonon mean free path (MFP)—of SWCNT films by conducting tensile tests and thermal conductivity measurements. The SWCNT films were prepared through vacuum filtering, with their structures modified by adjusting the ultrasonic dispersion amplitude during SWCNT ink production. The average sound velocity of the SWCNT films reached a maximum of 692 m/s at the lowest dispersion amplitude of 30 % (nominal value of 200 W), decreasing as the dispersion amplitude increased. The maximum values of lattice thermal conductivity and phonon MFP were 50.9 W/(m⋅K) and 119 nm, respectively, observed at dispersion amplitudes of 50 % and 90 %. These results arise from the complex interaction of factors such as defect density, mass density, SWCNT bundle diameter, and SWCNT length. This analytical method provides a straightforward approach to determine the detailed phonon transport properties of CNT films.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"17 ","pages":"Article 100435"},"PeriodicalIF":3.1,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143129058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EDITORIAL: Nanoscience in Ecuador: Fostering a Thriving Research Culture

IF 3.1

Carbon Trends Pub Date : 2024-12-01 DOI: 10.1016/j.cartre.2024.100425

Paola Ayala , Vincent Meunier

引用次数: 0

Material extrusion of topologically engineered architecture inspired by carbon-based interlocked petal-schwarzites 受碳基互锁花瓣石启发的拓扑工程结构的材料挤压工艺

IF 3.1

Carbon Trends Pub Date : 2024-11-19 DOI: 10.1016/j.cartre.2024.100431

Rushikesh S. Ambekar , Leonardo V. Bastos , Douglas S. Galvao , Chandra S. Tiwary , Cristiano F. Woellner

{"title":"Material extrusion of topologically engineered architecture inspired by carbon-based interlocked petal-schwarzites","authors":"Rushikesh S. Ambekar , Leonardo V. Bastos , Douglas S. Galvao , Chandra S. Tiwary , Cristiano F. Woellner","doi":"10.1016/j.cartre.2024.100431","DOIUrl":"10.1016/j.cartre.2024.100431","url":null,"abstract":"<div><div>Exploiting the topologically engineered complex Schwarzite architecture has allowed the creation of innovative and distinctive structural elements possessing high specific strength. These fundamental building blocks' mechanical characteristics can be fine-tuned by reinforcing them with more robust architectures featuring high surface areas. In this work, we have fabricated six distinct Schwarzite-based structures composed of multiple interlocked layers, termed architecturally interlocked petal-schwarzites. These intricate structures have been additively manufactured into macroscopic dimensions and subjected to uniaxial compression. Experimental findings reveal a correlation between the mechanical response and the number of layers. Additionally, fully atomistic molecular dynamics compressive simulations have been carried out, yielding results that are in good agreement with the experimental observations. These simulations provide insights into the underlying mechanism of high specific strength and energy absorption exhibited by architecturally interlocked petal-schwarzites. The proposed methodology introduces a new perspective on the development of engineered additively manufactured materials with tunable and enhanced mechanical properties.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"17 ","pages":"Article 100431"},"PeriodicalIF":3.1,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanistic insight into the catalytic activities of metallic sites on nitrogen-doped graphene quantum dots for CO2 hydrogenation 氮掺杂石墨烯量子点上金属位点对二氧化碳加氢催化活性的机理研究

IF 3.1

Carbon Trends Pub Date : 2024-11-19 DOI: 10.1016/j.cartre.2024.100430

Armin Mahmoudi, Siyavash Kazemi Movahed, Hossein Farrokhpour

{"title":"Mechanistic insight into the catalytic activities of metallic sites on nitrogen-doped graphene quantum dots for CO2 hydrogenation","authors":"Armin Mahmoudi, Siyavash Kazemi Movahed, Hossein Farrokhpour","doi":"10.1016/j.cartre.2024.100430","DOIUrl":"10.1016/j.cartre.2024.100430","url":null,"abstract":"<div><div>The origin of selectivity and activity of the CO<sub>2</sub> hydrogenation reaction on single-atom catalysts composed of three adjacent 3d transition metals (Fe, Co, and Ni) supported on N-doped graphene quantum dots were systematically investigated and compared using density functional theory (DFT) calculations, natural bond orbital (NBO), and quantum theory of atoms in molecules (QTAIM) analysis. This study reveals that π-backbonding between the metal and CO<sub>2</sub>* does not occur and [CO<sub>2</sub>]<sup>δ+</sup> species drive the reaction. The CO<sub>2</sub>* reacts with H<sub>2</sub> via the Eley-Rideal (ER) mechanism by using the synergistic effects of the N site. The higher the partial positive charge on the C atom, the lower the Ea of the reaction. Subsequently, a tautomerization reaction, which is facilitated by hydrogen bonding, occurs and hydrogen is transferred to HCOO* resulting in the formation of CHOOH*. This study shows the selective formation of formic acid from CO<sub>2</sub> is accessible on these SACs and Fe-SAC is the best one between these three catalysts. Although CO<sub>2</sub> is more inert than formic acid the H<sub>2</sub> molecule reacts with the adsorbed formic acid more difficult than the adsorbed CO<sub>2</sub>. It is because the hydrogenation of formic acid causes C-H bond formation resulting in failure of the coordinated O atom's octet and the unstable H<sub>2</sub>COOH* is formed. This step is the rate-determining step of HOCH<sub>2</sub>OH formation from CO<sub>2</sub>, with Ea of 1.94, 2.03, and 2.23 eV for Fe, Co, and Ni, respectively. Finally, the system undergoes another tautomerization reaction resulting in the formation of HOCH<sub>2</sub>OH (formaldehyde monohydrate).</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"17 ","pages":"Article 100430"},"PeriodicalIF":3.1,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fe-based catalytic modification of a birch sawdust-based carbon structure: The effect of process parameters on the final product using an experimental design 桦木锯屑基碳结构的铁基催化改性：利用实验设计分析工艺参数对最终产品的影响

IF 3.1

Carbon Trends Pub Date : 2024-11-17 DOI: 10.1016/j.cartre.2024.100428

Henna Lempiäinen , Davide Bergna , Anne Heponiemi , Tao Hu , Glaydson S. dos Reis , Rafal Sliz , Ulla Lassi

{"title":"Fe-based catalytic modification of a birch sawdust-based carbon structure: The effect of process parameters on the final product using an experimental design","authors":"Henna Lempiäinen , Davide Bergna , Anne Heponiemi , Tao Hu , Glaydson S. dos Reis , Rafal Sliz , Ulla Lassi","doi":"10.1016/j.cartre.2024.100428","DOIUrl":"10.1016/j.cartre.2024.100428","url":null,"abstract":"<div><div>Biomass waste-based, graphite-like material is an interesting alternative to fossil carbons in, for example, battery solutions. The aim was to produce carbon with a graphite-like structure from birch waste through catalytic modification with iron nitrate at relatively low temperatures. The study highlighted the effects of the Fe/birch mass ratio (0–20 mg Fe/g birch), heating temperature (750–900 °C), holding time (1–6 h), and heating rate (3–10 °C/min) on the carbon. The influence of each factor was demonstrated using a design of experiments (DoE) approach. Changes in yield, chemical composition, morphology, specific surface area, total pore volume, pore size distribution, particle size, tapped density, and conductivity were analyzed. The results showed that temperature affected the chemical content, yield, and conductivity. Iron-impregnation affected the structure of birch by modifying its total pore volume, tapped density, I<sub>D</sub>/I<sub>G</sub> value, and conductivity. The heating rate and holding time had relatively little effect. The highest conductivity (7.23 S/cm) was obtained when impregnated birch was pyrolyzed at the maximum temperature, holding time, and heating rate. However, the best graphitization result (I<sub>D</sub>/I<sub>G</sub> 0.98) was obtained when iron-impregnated birch was heated for 6 h at 750 °C at a heating rate of 3 °C/min.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"17 ","pages":"Article 100428"},"PeriodicalIF":3.1,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142705691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of morphological, structural, thermal, electrical, and chemical composition properties of graphene oxide, and reduced graphene oxide obtained by sequential reduction methods 评估氧化石墨烯以及通过顺序还原法获得的还原氧化石墨烯的形态、结构、热、电和化学成分特性

IF 3.1

Carbon Trends Pub Date : 2024-11-14 DOI: 10.1016/j.cartre.2024.100429

Hülya KAFTELEN-ODABAŞI

引用次数: 0

Eco and user–friendly curcumin based nanocomposite forensic powder from coal fly ash for latent fingerprint detection in crime scenes 基于姜黄素的粉煤灰纳米复合法医粉末用于犯罪现场潜伏指纹检测，既环保又方便使用

IF 3.1

Carbon Trends Pub Date : 2024-11-13 DOI: 10.1016/j.cartre.2024.100427

E. PRABAKARAN, K. PILLAY

{"title":"Eco and user–friendly curcumin based nanocomposite forensic powder from coal fly ash for latent fingerprint detection in crime scenes","authors":"E. PRABAKARAN, K. PILLAY","doi":"10.1016/j.cartre.2024.100427","DOIUrl":"10.1016/j.cartre.2024.100427","url":null,"abstract":"<div><div>In this study, the production of an eco-friendly curcumin based nanocomposite fingerprint labeling powder is reported for the first time. This powder was prepared from thermal power plant waste known as coal fly ash. 3-aminopropyltrimethoxysilane (APTMS) was covalently interacted with coal fly ash (CFA/APTMS) and curcumin (CUR) was encapsulated onto CFA/APTMS to give a novel and eco-friendly CFA/APTMS/CUR nanocomposite for LFPs detection with the powder dusting method. Several instrumental techniques including Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), UV–visible spectroscopy, fluorescence spectroscopy (FL), scanning electron microscopy (SEM), energy-dispersive X-ray spectrometry (EDS), and transmission electron microscopy (TEM) were used to characterize this nanocomposite. The CFA/APTMS/CUR nanocomposite was applied as a forensic powder for the development of latent fingerprint (LFPs) images on various porous and non-porous substrates. Level 2 (island, origination, bifurcation, termination, fork, dot, and bridge) and Level 3 (sweat pores and shape of triangles, round, and irregular) were the features of the LFP images. Under visible light conditions, the aging LFPs images were clearly detected on an aluminum foil surface using the nanocomposite powder, which had good sensitivity and minimal background interference. Additionally, LFPs images were developed using CFA/APTMS/CUR nanocomposite on leather substrates for belts and shoes in order to confirm the benefits of the nanocomposite's high sensitivity. This nanocomposite improved LFPs images with unique patterns and showed excellent performance on a variety of surfaces for the development of LFPs. These findings therefore proved that the powdered CFA/APTMS/CUR nanocomposite can be effectively utilized for the development of LFPs images at important crime scenes and for the biometric identification of criminal suspects through fingerprint comparison.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"17 ","pages":"Article 100427"},"PeriodicalIF":3.1,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling the nanostructured nature of pyrobitumen and shungite carbons through Raman, X-ray and theoretical analyses 通过拉曼、X 射线和理论分析揭示焦沥青和霰石碳的纳米结构性质

IF 3.1

Carbon Trends Pub Date : 2024-11-09 DOI: 10.1016/j.cartre.2024.100421

Eric Faulques , Nataliya Kalashnyk , Yves Lulzac , Yves Moëlo

{"title":"Unveiling the nanostructured nature of pyrobitumen and shungite carbons through Raman, X-ray and theoretical analyses","authors":"Eric Faulques , Nataliya Kalashnyk , Yves Lulzac , Yves Moëlo","doi":"10.1016/j.cartre.2024.100421","DOIUrl":"10.1016/j.cartre.2024.100421","url":null,"abstract":"<div><div>X-ray powder diffraction and multi-wavelength Raman spectroscopy were employed to characterize carbonaceous geomaterials, offering the first nanostructural analysis of rare pyrobitumen (LP) samples from the Lopérec gold deposit in Brittany, France, by comparing them to Karelian shungite (KS) and carbon allotropes samples. The inter-reticular distances <em>d</em><sub>(002)</sub> for LP/KS, derived from X-ray diffraction patterns, are 3.57(1)/3.48(1) Å, with crystal thickness <em>Lc</em><sub>(002)</sub> and graphitization degree of 1.4/2.0 nm and 6.9/13.1, respectively. Raman band deconvolution indicates graphitic domain sizes of <em>L</em><sub>a</sub> = 6.7/8.2 nm and graphene-like flake tortuosity <em>L<sub>t</sub></em> = 9.2/11.3 nm. Extensive density functional theory calculations on various 2D nanoflakes accurately predict that the D and G Raman bands may originate from graphene quantum dots, which form part of the nanostructure of these geomaterials. LP exhibits greater structural disorder than KS, along with a lower density (1.60 vs. 1.85 g/cm³), suggesting a lower degree of graphitization, likely due to formation at a lower temperature (∼300 °C). The Lopérec pyrobitumen is believed to result from a redox process involving a CO<sub>2</sub>-rich, oxidizing hydrothermal solution interacting with a local hydrocarbon source.</div></div>","PeriodicalId":52629,"journal":{"name":"Carbon Trends","volume":"17 ","pages":"Article 100421"},"PeriodicalIF":3.1,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0