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C, Volume 11, Issue 3

2025 September - 33 articles

Cover Story: The disposal of medical device waste is an international problem that has been exacerbated by the increasing prevalence of point of care testing devices. The material composition of the latter is largely based on non-degradable plastics which, when spent, are typically discarded for incineration. There is a pressing need for the development of new biodegradable polymers that can serve as electrode substrates and which, ideally, originate from sustainable sources. The combination of psyllium husk with carbon nano particles could potentially meet such demanding requirements through the ability of the composites to form conductive hydrogels and intricate 3D microneedle structures. Formed from aqueous solution, these novel substrates offer new opportunities for the simple and clean manufacture of disposable electrochemical sensors. View this paper
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Articles (33)

  • Article
  • Open Access
1,577 Views
20 Pages

15 September 2025

Carbide-bonded graphene (CBG) coating, with its unique 3D cross-linked network structure, shows significant potential for protecting silicon substrates. However, a comprehensive understanding of its macroscale tribological properties remains lacking....

  • Article
  • Open Access
1,272 Views
12 Pages

8 September 2025

Coal-based solid wastes are used for carbon fixation, which can achieve the dual purpose of resource utilization of coal-based solid wastes and CO2 storage, but carbon fixation has a negative impact on the rheological properties of filling slurry. Th...

  • Article
  • Open Access
1,778 Views
15 Pages

8 September 2025

The hierarchical porosity and active sites of porous carbon materials have significant impacts on the oxygen reduction reaction (ORR) process. The heteroatom-doped porous carbon materials (Z67-900, Z8-900, Z11-900, Z12-900) were synthesized by pyroly...

  • Article
  • Open Access
2 Citations
1,634 Views
18 Pages

Formation of Improved Metallurgical Properties and Carbon Structure of Coke by Optimizing the Composition of Petrographically Heterogeneous Interbasin Coal Batches

  • Denis Miroshnichenko,
  • Kateryna Shmeltser,
  • Maryna Kormer,
  • Leonid Bannikov,
  • Serhii Nedbailo,
  • Mykhailo Miroshnychenko,
  • Natalya Mukina and
  • Mariia Shved

4 September 2025

Given the multi-basin raw material base for coking that has been formed at most industry enterprises, there is an urgent need to optimize the component composition and improve the basic technological methods of coal raw material preparation, taking i...

  • Article
  • Open Access
1 Citations
2,375 Views
13 Pages

NaOH-Modified Activated Carbon Materials for Hydrogen Sulfide Removal

  • Meriem Abid,
  • Manuel Martínez-Escandell and
  • Joaquín Silvestre-Albero

3 September 2025

A high-surface-area activated carbon material (RG) is used as a platform to create highly concentrated NaOH composites. These materials are tested for the removal of H2S under industrially relevant conditions (800 ppm H2S in CO2-, H2O- and O2-contain...

  • Article
  • Open Access
1,597 Views
15 Pages

2 September 2025

Effective ablative thermal protection systems are essential for ensuring the structural integrity of hypersonic vehicles subjected to extreme aerothermal loads. However, the microscopic reaction mechanisms at the gas–solid interface, particular...

  • Article
  • Open Access
1,459 Views
14 Pages

21 August 2025

The treatment of organic phosphate ester (OPE) pollutants in water is a challenging but highly necessary task. In this study, an advanced oxidation process through light activation of peroxymonosulfate (PMS) involving graphene oxide (GO) as a promote...

  • Article
  • Open Access
1,549 Views
15 Pages

Characterisation of a Biodegradable Electrode Substrate Based on Psyllium Husk–Carbon Nanoparticle Composites

  • Cliodhna McCann,
  • Victoria Gilpin,
  • Regan McMath,
  • Chris I. R. Gill,
  • Karl McCreadie,
  • James Uhomoibhi,
  • Pagona Papakonstantinou and
  • James Davis

17 August 2025

Unrefined psyllium husk derived from Plantago ovata constitutes a complex mixture of water-soluble and insoluble polymeric chains that form an interpenetrating network capable of entrapping carbon nanoparticles. While the resulting composite was foun...

  • Article
  • Open Access
1,263 Views
15 Pages

17 August 2025

The present study deals with hydrate formation with binary gaseous mixtures consisting of carbon dioxide mixed with ethane at varying concentrations. Since the production of hydrates is recognised as a stochastic process and also due to the marked in...

  • Article
  • Open Access
1,821 Views
34 Pages

Graphene-like Carbon Materials from King Grass Biomass via Catalytic Pyrolysis Using K3[Fe(CN)6] as a Dual Catalyst and Activator

  • Alba N. Ardila Arias,
  • Erasmo Arriola-Villaseñor,
  • Madelyn Ortiz-Quiceno,
  • Lucas Blandón-Naranjo and
  • José Alfredo Hernández-Maldonado

14 August 2025

The potential of king grass biomass as a precursor for carbon-based materials was evaluated through comprehensive physicochemical characterization. The biomass showed high fixed carbon content, reactive oxygenated groups, and favorable atomic ratios,...

  • Article
  • Open Access
1,327 Views
24 Pages

Optimizing Distribution of Light Irradiation in Column Reactor Array and Glass Chamber for Microalgae Carbon Sequestration Facilities

  • Xiangjin Liang,
  • Jun Lu,
  • Yapeng Chen,
  • Guangbiao Zhou,
  • Zeyan Tao,
  • Zhenyu Hu,
  • Ying Liu,
  • Wanlin Liu,
  • Yang Xu and
  • Jun Cheng

12 August 2025

The column photobioreactor has become the predominant approach for carbon sequestration by microalgae in power plant settings, owing to its capacity for high-density cultivation and efficient light energy utilization. Due to the dense arrangement of...

  • Article
  • Open Access
2 Citations
2,141 Views
15 Pages

Pulsed Laser Annealing of Deposited Amorphous Carbon Films

  • Arianna D. Rivera,
  • Eitan Hershkovitz,
  • Panagiotis Panoutsopoulos,
  • Manny X. de Jesus Lopez,
  • Bradley Simpson,
  • Honggyu Kim,
  • Rajaram Narayanan,
  • Jesse Johnson and
  • Kevin S. Jones

8 August 2025

Pulsed laser annealing (PLA) was performed on a 0.3 μm thick hydrogenated amorphous carbon (a-C:H) film deposited on silicon substrate by plasma-enhanced chemical vapor deposition (PECVD). The 532 nm, 32 ns PLA ranged in fluence from 0.2 to 0.94 J...

  • Article
  • Open Access
1,348 Views
11 Pages

In Silico Exfoliation of ReaxFF Graphite—Temperature, Speed, Angle Dependence, and the Effect of Gold Overlayer

  • Teruki Ando,
  • Seiya Yokokura,
  • Hiroki Waizumi,
  • Hironori Suzuki,
  • Kenji Kawashima and
  • Toshihiro Shimada

7 August 2025

Exfoliation of layered materials is an important technique for preparing atomic-layer materials. To provide fundamental mechanistic insights for optimizing this process, we investigated the exfoliation process of nano graphite using molecular dynamic...

  • Review
  • Open Access
1 Citations
1,789 Views
22 Pages

1 August 2025

Nanozymes, as a new generation of artificial enzymes, have attracted increasing attention in the field of biomedicine due to their multiple enzymatic characteristics, multi-functionality, low cost, and high stability. Among them, carbon dot nanozymes...

  • Communication
  • Open Access
1 Citations
1,566 Views
11 Pages

1 August 2025

Porous materials are characterized by the pore surface area (S) and volume (V) accessible to a confined fluid. For mesoporous materials NMR measurements of diffusion are used to assess the S/V ratio, because at short times, only the diffusivity of mo...

  • Article
  • Open Access
4 Citations
2,691 Views
16 Pages

Stability of Carbon Quantum Dots for Potential Photothermal and Diagnostic Applications

  • María Fernanda Amezaga Gonzalez,
  • Abdiel Ramirez-Reyes,
  • Monica Elvira Mendoza-Duarte,
  • Alejandro Vega-Rios,
  • Daniel Martinez-Ozuna,
  • Claudia A. Rodriguez-Gonzalez,
  • Santos-Adriana Martel-Estrada and
  • Imelda Olivas-Armendariz

29 July 2025

Theranostic agents enable the simultaneous diagnosis and treatment of diseases, and they are particularly useful in fluorescent imaging and cancer therapies. In this study, carbon quantum dots were synthesized via a microwave-assisted method using ci...

  • Article
  • Open Access
12 Citations
5,955 Views
15 Pages

Carbon Footprint and Uncertainties of Geopolymer Concrete Production: A Comprehensive Life Cycle Assessment (LCA)

  • Quddus Tushar,
  • Muhammed A. Bhuiyan,
  • Ziyad Abunada,
  • Charles Lemckert and
  • Filippo Giustozzi

28 July 2025

This study aims to estimate the carbon footprint and relative uncertainties for design components of conventional and geopolymer concrete. All the design components of alkaline-activated geopolymer concrete, such as fly ash, ground granulated blast f...

  • Article
  • Open Access
4 Citations
3,794 Views
24 Pages

23 July 2025

Most industrial processes depend on heat, electricity, demineralized water, and chemical inputs, which themselves are produced through energy- and resource-intensive industrial activities. In this work, acetic acid (AA) production from syngas (CO, CO...

  • Article
  • Open Access
1,126 Views
12 Pages

22 July 2025

Carbon dots (CDs), a class of carbon-based fluorescent nanomaterials, have garnered significant attention due to their tunable optical properties and functional versatility. In this study, we developed a hybrid material by grafting pH- and temperatur...

  • Article
  • Open Access
1,074 Views
11 Pages

NMR Spectroelectrochemistry in Studies of Procarbazine Oxidation by Laser-Induced Graphene Thin Films

  • Zhe Wang,
  • Xiaoping Zhang,
  • Shihui Xu,
  • Lin Yang,
  • Lina Wang,
  • Yijing Wang,
  • Ahmad Mansoor and
  • Wei Sun

21 July 2025

In this paper, nanoscale graphene film electrodes were prepared using laser-induced technology, and an in situ electrochemical cell was constructed. The normalized peak areas at 2.82 ppm for the samples without the in situ electrochemical cell and wi...

  • Article
  • Open Access
3 Citations
1,653 Views
18 Pages

Tuning Optical Excitations of Graphene Quantum Dots Through Selective Oxidation: Effect of Epoxy Groups

  • Igor V. Ershov,
  • Anatoly A. Lavrentyev,
  • Dmitry L. Romanov and
  • Olga M. Holodova

14 July 2025

Graphene quantum dots (GQDs) have strong potential in optoelectronics, particularly in LEDs, photodetectors, solar cells, and nanophotonics. While challenges remain in efficiency and scalability, advances in functionalization and hybrid material inte...

  • Review
  • Open Access
5 Citations
11,233 Views
18 Pages

11 July 2025

Due to soil nutrient depletion and rising food demand from an increasing global population, it is essential to find sustainable ways to boost crop yields, improve soil health, and address the environmental issues induced by agriculture. The most appr...

  • Article
  • Open Access
3 Citations
1,329 Views
11 Pages

9 July 2025

Penta-graphene, a novel two-dimensional carbon allotrope entirely composed of pentagonal carbon rings, has attracted increasing attention due to its unique geometric structure, mechanical robustness, and intrinsic semiconducting nature. In this study...

  • Article
  • Open Access
1 Citations
1,983 Views
19 Pages

Mechanism of Fluorescence Characteristics and Application of Zinc-Doped Carbon Dots Synthesized by Using Zinc Citrate Complexes as Precursors

  • Yun Zhang,
  • Yiwen Guo,
  • Kaibo Sun,
  • Xiaojing Li,
  • Xiuhua Liu,
  • Jinhua Zhu and
  • Md. Zaved Hossain Khan

7 July 2025

Zn-doped carbon dots (Zn@C-210 calcination temperature at 210 °C and Zn@C-260 calcination temperature at 260 °C) were synthesized via an in situ calcination method using zinc citrate complexes as precursors, aiming to investigate the mechanis...

  • Article
  • Open Access
2 Citations
1,898 Views
14 Pages

Optimized Adsorptive Desulfurization Using Waste Tire-Derived Carbon

  • Ming-Liao Tsai,
  • An-Ya Lo,
  • Jun-Hao Liu and
  • Yong-Ming Dai

7 July 2025

The inclusion of adsorption thermodynamic analysis and performance benchmarking with existing adsorbents reinforces both the theoretical significance and practical applicability of this study. The modified rubber-derived carbon demonstrated a remarka...

  • Article
  • Open Access
2 Citations
2,875 Views
13 Pages

30 June 2025

We investigate the thermal conductivity of graphene Moiré superlattices formed by twisting bilayer graphene (TBG) at small angles, employing approach-to-equilibrium molecular dynamics and lattice dynamics calculations based on the Boltzmann Tr...

  • Article
  • Open Access
5 Citations
3,751 Views
14 Pages

Analysis of Biochar–Cement Composites by SEM/EDS: Interfacial Interactions and Effects on Mechanical Strength

  • Rafaela Paula,
  • Jaqueline Carvalho,
  • Antônio Júnior,
  • Filipe Fagundes,
  • Robson de Lima,
  • Evaneide Lima,
  • Carlos Oliveira,
  • Magno de Oliveira,
  • Augusto Bezerra and
  • Alan Machado
  • + 1 author

29 June 2025

Portland cement production is one of the main global sources of CO2 emissions, driving the search for sustainable solutions to reduce its environmental footprint. This study evaluated the use of biochar derived from sugarcane bagasse as a partial cem...

  • Article
  • Open Access
1,224 Views
18 Pages

Bimetallic Copper–Indium Co-Doped Titanium Dioxide Towards Electrosynthesis of Urea from Carbon Dioxide and Nitrate

  • Youcai Meng,
  • Tianran Wei,
  • Zhiwei Wang,
  • Caiyun Wang,
  • Junyang Ding,
  • Yang Luo and
  • Xijun Liu

27 June 2025

Electrocatalytic urea synthesis offers great potential for sustainable strategies through CO2 and NO3 reduction reactions. However, the development of high-performance catalysts is often hampered by the complexity of synthetic methodologies an...

  • Article
  • Open Access
1,257 Views
10 Pages

Theoretical Investigation of O2 and CO2 Adsorption on Small PdNi Clusters Supported on N-Doped Graphene Quantum Dots

  • Brenda García-Hilerio,
  • Lidia Santiago-Silva,
  • Pastor T. Matadamas-Ortiz,
  • Alejandro Gomez-Sanchez,
  • Víctor A. Franco-Luján and
  • Heriberto Cruz-Martínez

27 June 2025

A density functional theory (DFT) investigation was conducted to study the O2 and CO2 adsorption on very small Pd3−nNin (n = 0–2) clusters supported on N-doped graphene quantum dots (N-GQDs). The study was carried out in two stages. First...

  • Article
  • Open Access
2,200 Views
14 Pages

Enhancing High-Temperature Oxidation Stability of Recycled Carbon Fibers Through Ceramic Coating

  • Carmela Borriello,
  • Sabrina Portofino,
  • Loredana Tammaro,
  • Pierpaolo Iovane,
  • Gabriella Rametta and
  • Sergio Galvagno

26 June 2025

Carbon fiber-reinforced composites (CFRCs) have attracted considerable attention in recent years due to their excellent properties, enabling their use across various sectors. However, their application at high temperatures is limited by the fibers&rs...

  • Article
  • Open Access
1,206 Views
13 Pages

Preparation and Properties of C/C-(TiZrHfNbTa)C Composites via Inorganic Salt Precursor Method

  • Haibo Ouyang,
  • Jiyong Liu,
  • Cuiyan Li,
  • Tianzhan Shen,
  • Jiaqi Liu,
  • Mengyao He,
  • Yanlei Li and
  • Leer Bao

25 June 2025

Using low-cost transition-metal chlorides and furfuryl alcohol as raw materials, the (TiZrHfNbTa)C precursor was prepared, and a three-dimensional braided carbon fiber preform (C/C) coated with pyrolytic carbon (PyC) was used as the reinforcing mater...

  • Article
  • Open Access
1,143 Views
17 Pages

24 June 2025

Despite the promising electronic properties of graphene, its lack of an intrinsic bandgap limits its applicability in semiconductor technologies. This has catalyzed the investigation of newly developed two-dimensional carbon materials, including tetr...

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C - ISSN 2311-5629