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Open research questions in Graphene and Nanomaterials Applications

125 gap statements mined from Graphene and Nanomaterials Applications papers in our 4.5M-paper local library, which holds 971 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The lack of an intrinsic bandgap in pristine graphene restricts its electronic applications, making doping a viable strategy for engineering its semiconducting behavior. There is a need for a non-invasive approach for halitosis detection and therapeutic monitoring.

    Transition-Metal-Doped Graphene for Volatile Sulfur Compound Detection: A DFT Study · 2026 · DOI

  • The relatively low thermal stability of humic acids limits their practical use. The insufficiently developed surface of humic acids restricts their adsorption capacity. The lack of a systematic study on the synthesis and characterization of humic acid/reduced graphene oxide composites.

    Structural, Thermal, and Phenol Adsorption Properties of a Humic Acid/Reduced Graphene Oxide Composite · 2026 · DOI

  • The study did not evaluate the in vivo efficacy of the VN-JM nanofibers. The study used a limited number of experimental conditions.

    Phytoextract-loaded bioinspired PLGA nanofibrous scaffold promotes diabetic wound healing via anti-inflammatory and antioxidant effects in in vitro and in vivo experimental models · 2026 · DOI

  • Further studies are needed to evaluate the in vivo efficacy of the VN-JM nanofibers. Studies should be conducted to optimize the formulation composition and electrospinning parameters. Research should be done to investigate the potential of the VN-JM nanofibers for other wound healing applications.

    Phytoextract-loaded bioinspired PLGA nanofibrous scaffold promotes diabetic wound healing via anti-inflammatory and antioxidant effects in in vitro and in vivo experimental models · 2026 · DOI

  • Despite these advances, clinical translation remains constrained by concerns about long‐term toxicity, fabrication scalability and reproducibility, regulatory approval, and the lack of standardized biological evaluation protocols.

    Engineering reduced graphene oxide hybrid nanocomposites for biomedicine: progress, challenges and emerging opportunities · 2026 · DOI

  • Special attention is warranted during scale-up or process changes to prevent GRM emissions and exposures.

    Occupational exposure to graphene-related materials: from workplace emissions to health risk assessment · 2025 · DOI

  • This study demonstrates that short-term exposure to low-dose GO causes mitochondrial damage in human ovarian granulosa cells, highlighting the need for further research on the safety of GO, particularly regarding its potential effects on reproductive health.

    Graphene Oxide Nanosheets Induce Mitochondrial Toxicity in Human Ovarian Granulosa Cells: Implications for Female Reproductive Health · 2025 · DOI

  • Graphene oxide (GO) has promising biomedical applications, but its potential toxicity to the female reproductive system is underexplored.

    Graphene Oxide Nanosheets Induce Mitochondrial Toxicity in Human Ovarian Granulosa Cells: Implications for Female Reproductive Health · 2025 · DOI

  • Addressing these translational barriers through standardized synthesis, thorough safety evaluation, and regulatory harmonization will be essential to fully realize the biomedical potential of graphene, and future research should focus on scalable green production, detailed in vivo safety studies, and clinical translation of graphene-based therapeutics.

    Green synthesis of relevant and sustainable bio-applications of few-layer graphene: A multi-faceted review and future perspectives · 2025 · DOI

  • Further studies could investigate the use of other amino acids and vitamins for surface modification. The adsorption capacity of other drugs using green modified graphene oxide nanoplatelets could be explored.

    Green Modified Graphene Oxide Nanoplatelets as Drug Adsorbents · 2026 · DOI

  • There is a need to improve the efficiency of drug delivery systems. The adsorption capacity of drugs using graphene oxide nanoplatelets is not fully explored.

    Green Modified Graphene Oxide Nanoplatelets as Drug Adsorbents · 2026 · DOI

  • The need to minimize systemic toxicity associated with conventional chemotherapy drugs. The challenge of achieving targeted anticancer activity.

    Development of Magnetite-Graphene Oxide Nanoplatforms for pH-Sensitive Doxorubicin Delivery and Cytotoxicity Evaluation · 2026 · DOI

  • The study suggests that future research should focus on the development of rGO-based materials for environmental applications. The study highlights the importance of international collaborations and contributions from leading countries.

    Bibliometric Analysis of Publications on The Use of Reduced Graphene Oxide (rGO) in Environmental Applications · 2026 · DOI

  • The lack of understanding of the molecular interactions between PVA and GO and G for tissue engineering scaffolds. The need for the development of more effective tissue engineering scaffolds.

    Molecular interactions between polyvinyl alcohol, graphene oxide and graphene for applications in biomedical engineering · 2026 · DOI

  • Current treatments for hypertrophic scars have limitations. There is a need for a combinatorial therapeutic platform. The effects of graphene-collagen cryogel and apoptotic vesicles on HS-fibroblasts need to be demonstrated.

    A combinatorial therapeutic platform based on graphene–collagen cryogel and apoptotic vesicles for modulating hypertrophic scars · 2026 · DOI

  • The lack of understanding of the long-term cytotoxicity, immune modulation, and particle biostability of GO-based coatings. The scarcity of large-animal and human clinical data on the effects of GO-based coatings.

    Multifunctional graphene oxide coatings for dental implant surfaces · 2026 · DOI

  • Future research should focus on standardised characterisation, long-term in vivo evaluations, and safety assessments aligned with regulatory standards, alongside the development of intelligent GO-based systems that facilitate local drug delivery, osteoimmunomodulation, and on-demand antimicrobial activation.

    Multifunctional graphene oxide coatings for dental implant surfaces · 2026 · DOI

  • While further research is required to definitively establish a causal link, these results highlight that the synthesized NPs likely facilitate apoptosis in ovarian cancer cells by shifting the intracellular environment toward oxidative stress. However, further detailed studies are warranted to elucidate the underlying molecular mechanisms governing their anticancer effects.

    Nerolidol-Loaded Graphene Oxide/Iron Nitrate/Nickel Nitrate Nanoparticles Induce Oxidative Stress-Mediated Apoptosis in Ovarian Cancer A2780 Cells · 2026 · DOI

  • The practical use of humic acids is often limited by their relatively low thermal stability, tendency to aggregate, and insufficiently developed surface, - The experiment was not intended to provide a complete technological evaluation of the material for wastewater…

    Structural, Thermal, and Phenol Adsorption Properties of a Humic Acid/Reduced Graphene Oxide Composite · 2026 · DOI

  • Further studies on the mechanism of TBO-GQD/AgNPs-mediated PDI, - Investigation of TBO-GQD/AgNPs-mediated PDI against other types of bacteria, - Optimization of TBO-GQD/AgNPs-mediated PDI…

    Highly Efficient Photodynamic Inactivation of Multidrug-resistant Pseudomonas aeruginosa, Staphylococcus aureus and Acinetobacter baumannii Strains by Toluidine Blue-graphene Oxide Quantum Dot/Ag Nanoparticle Conjugate · 2026 · DOI

  • Limited research on ground-dwelling ants, - The study only investigated the effects of GO on one species of ant (Camponotus japonicus), - The study was conducted in a laboratory…

    Graphene Oxide-Induced Toxicity in Social Insects: Study on Ants Through Integrated Analysis of Physiology, Gut Microbiota, and Transcriptome · 2026 · DOI

  • Further studies are needed to investigate the effects of GO on other species of ants, - Research should be conducted to determine the long-term effects of GO exposure on ant colonies, - Studies should be done to explore the potential applications of GO in ant-mediated ecosystem…

    Graphene Oxide-Induced Toxicity in Social Insects: Study on Ants Through Integrated Analysis of Physiology, Gut Microbiota, and Transcriptome · 2026 · DOI

  • Further development for regenerative medicine applications, - Optimization of C-CDs for bone regeneration therapy, - Investigation of the long-term effects of C-CDs on bone…

    Bioactive Carbon Dots from Clove Residue: Synthesis, Characterization, and Osteogenic Properties · 2025 · DOI

  • Investigating the long-term effects of the m-GO@DOX nanoparticles. Evaluating the efficacy of the m-GO@DOX nanoparticles in animal models. Exploring the potential of the m-GO@DOX nanoparticles for the delivery of other chemotherapeutic agents.

    Development of Magnetite-Graphene Oxide Nanoplatforms for pH-Sensitive Doxorubicin Delivery and Cytotoxicity Evaluation · 2026 · DOI

  • The study identifies the challenge of analyzing a large dataset of academic publications. The study highlights the challenge of identifying emerging trends and potential directions for future investigations.

    Bibliometric Analysis of Publications on The Use of Reduced Graphene Oxide (rGO) in Environmental Applications · 2026 · DOI

Most-cited papers in Graphene and Nanomaterials Applications

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Open questions raised by papers listed on this page include: (1) The lack of an intrinsic bandgap in pristine graphene restricts its electronic applications, making doping a viable strategy for engineering its semiconducting behavior (“Transition-Metal-Doped Graphene for Volatile Sulfur Compound Detection: A DFT…”, 2026); (2) The lack of a systematic study on the synthesis and characterization of humic acid/reduced graphene oxide composites (“Structural, Thermal, and Phenol Adsorption Properties of a Humic Acid/Reduced…”, 2026); (3) Further studies are needed to evaluate the in vivo efficacy of the VN-JM nanofibers (“Phytoextract-loaded bioinspired PLGA nanofibrous scaffold promotes diabetic…”, 2026); (4) Despite these advances, clinical translation remains constrained by concerns about long‐term toxicity, fabrication scalability and reproducibility, regulatory approval, and the lack of standardized biological evaluation protocols (“Engineering reduced graphene oxide hybrid nanocomposites for biomedicine:…”, 2026); (5) Further studies could investigate the use of other amino acids and vitamins for surface modification (“Green Modified Graphene Oxide Nanoplatelets as Drug Adsorbents”, 2026). 125 gap statements have been mined from Graphene and Nanomaterials Applications papers in our 4.5M-paper local library, which holds 971 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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