Science AI Journal
Materials Science · Research topic

Open research questions in Nanoparticles: synthesis and applications

320 unresolved questions extracted from the limitations and future-work sections of 1,118 Nanoparticles: synthesis and applications papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Limited studies on the use of plant extract derived CuO nanoparticles for antimicrobial and adsorption applications. Need for sustainable and efficient methods for wastewater treatment.

    Antimicrobial performance and congo red adsorption of plant extract derived copper oxide nanoparticles · 2026 · DOI

  • The need for environmentally friendly and sustainable approaches for nanoparticle synthesis. The underexploration of medicinal plants such as Iphiona scabra for nanoparticle synthesis.

    Green synthesis and characterization of zinc oxide nanoparticles using Iphiona scabra DC. ex Decne leaf extract · 2026 · DOI

  • Technical challenges in extrapolation validity, ethical dilemmas, and high costs associated with traditional hazard assessments. The need for rapid, mechanistically interpretable, and ethically acceptable evidence in regulatory decision-making. The complexity of nano-biomacromolecule interactions and the lack of comprehensive databases for ML model development.

    Bridging Nano-Interface Interactions and Organ-Specific Toxicity: A Review of Machine Learning for Nanomaterials Risk Assessment · 2026 · DOI

  • The gap between the expanding number and diversity of engineered nanomaterials and the limited capacity of conventional toxicity testing. The need for rapid, mechanistically interpretable, and ethically acceptable evidence in regulatory decision-making. The lack of comprehensive databases and ML models that can bridge in vitro and in vivo nanotoxicity.

    Bridging Nano-Interface Interactions and Organ-Specific Toxicity: A Review of Machine Learning for Nanomaterials Risk Assessment · 2026 · DOI

  • Further investigation into the role of entropy in nano-immune interactions, - Development of more advanced modeling strategies that account for the dynamic nature of the nano-bio interface

    Ligand conformational entropy as a regime-switching descriptor of the electrostatic–uptake relationship in nanocarrier–immune cell interactions · 2026 · DOI

  • Current modeling strategies do not fully capture the dynamic nature of the nano-bio interface. Physicochemical descriptors alone are insufficient to predict biological outcomes. There is a need for a framework that integrates heterogeneous information across scales while preserving interaction-level meaning.

    Ligand conformational entropy as a regime-switching descriptor of the electrostatic–uptake relationship in nanocarrier–immune cell interactions · 2026 · DOI

  • the study only evaluated the effects of three metal oxide nanoparticles - the study used a limited number of plant species - the concentration range of nanoparticles was limited to 62-500 mg/L

    Green synthesis of functionalized CuO, ZnO and Fe₂O₃ nanoparticles using medicinal plant extracts for early seedling growth evaluation · 2026 · DOI

  • investigating the effects of other metal oxide nanoparticles on seedling growth - evaluating the effects of functionalized metal oxide nanoparticles on other plant species - studying the mechanisms by which functionalized metal oxide nanoparticles affect seedling growth

    Green synthesis of functionalized CuO, ZnO and Fe₂O₃ nanoparticles using medicinal plant extracts for early seedling growth evaluation · 2026 · DOI

  • The study was conducted in vitro. The sample size was limited to 35 patients. The study only investigated the effects of HMNCs on S. epidermidis.

    Breaking the biofilm barrier: herbomineral nanocomposites to control Staphylococcus epidermidis through oxidative response and biofilm disruption · 2026 · DOI

  • Investigate the effects of HMNCs on other bacterial species. Conduct in vivo studies to evaluate the efficacy of HMNCs in treating infections. Explore the potential applications of HMNCs in preventing biofilm formation on medical devices.

    Breaking the biofilm barrier: herbomineral nanocomposites to control Staphylococcus epidermidis through oxidative response and biofilm disruption · 2026 · DOI

  • The challenge of validating this technology on a large scale, particularly in uncontrolled environments. The risk of cellular damage and oxidative stress when ZnO-NPs are applied at excessive doses. The need for safety assessments to be integrated with a mechanistic understanding of the interaction between ZnO-NPs and plant cellular processes.

    Eco-Physiological and Molecular Roles of Zinc Oxide Nanoparticles (ZnO-NPs) in Mitigating Abiotic Stress: A Comprehensive Review · 2026 · DOI

  • Traditional methods, like fertilizer application and genetic improvement, are limited. The need for a detailed investigation of how ZnO-NPs reprogram antioxidant systems and regulate photosystem II efficiency. The lack of understanding of the interaction between ZnO-NPs and plant cellular processes.

    Eco-Physiological and Molecular Roles of Zinc Oxide Nanoparticles (ZnO-NPs) in Mitigating Abiotic Stress: A Comprehensive Review · 2026 · DOI

  • The need for precise control over growth conditions and nanoparticle parameters. The potential for phytotoxicity and ecological risks associated with conventional chemical treatments. The challenge of scaling up biogenic nanoparticle synthesis methods.

    Biogenic Approaches to Metal Nanoparticle Synthesis and Their Application in Biotechnology · 2026 · DOI

  • The need for sustainable and efficient methods for metal nanoparticle synthesis. The lack of a comprehensive analysis of biological approaches for nanoparticle production. The limited understanding of the applications of biogenic nanoparticles in plant biotechnology.

    Biogenic Approaches to Metal Nanoparticle Synthesis and Their Application in Biotechnology · 2026 · DOI

  • high energy consumption in nanomaterial synthesis. harmful chemical release and sophisticated equipment and synthesis conditions. the need for sustainable and energy-efficient nanomaterial synthesis techniques.

    Assessing the Sustainability of Energy-Related Nanomaterial Synthesis: Emphasizing the Need for Energy-Efficient Nanomaterial Preparation Techniques · 2025 · DOI

  • The lack of data/information on the energy expended on nanomaterial synthesis, - Scanty information available on the energy consumption of various nanomaterial synthesis processes

    Assessing the Sustainability of Energy-Related Nanomaterial Synthesis: Emphasizing the Need for Energy-Efficient Nanomaterial Preparation Techniques · 2025 · DOI

  • Research is required to promote sustainable and precision agricultural practices that incorporate nanofertilizers and nanopesticides, - Investigation into the effects of nanoparticles on plant-associated microbial communities is needed

    Nanoparticle applications in agriculture: overview and response of plant-associated microorganisms · 2024 · DOI

  • The aggregation of NPs in colloids. The need for surface modification of TiO2 NPs to enhance their antimicrobial activity. The potential cytotoxicity of TiO2 NPs to eukaryotic cells.

    Review of Antimicrobial Properties of Titanium Dioxide Nanoparticles · 2024 · DOI

  • Further studies are needed to evaluate the dependence of the antimicrobial activity of TiO2 NPs on their characteristics, - Research on the modification of TiO2 NPs with inorganic and organic compounds to increase their antimicrobial activity

    Review of Antimicrobial Properties of Titanium Dioxide Nanoparticles · 2024 · DOI

  • investigation of the molecular antibacterial mechanisms of CuONPs, - exploration of the potential synergy between antibiotics and other nanoparticles, - development of new antimicrobial agents using MNP-antibiotic conjugates

    Recent Advances in the Development of Metal/Metal Oxide Nanoparticle and Antibiotic Conjugates (MNP–Antibiotics) to Address Antibiotic Resistance: Review and Perspective · 2024 · DOI

  • The study identifies challenges in the synthesis of zinc oxide nanoparticles using plant extracts, including the need for optimization of reaction parameters. The use of different zinc salt precursors affects the properties of the synthesized ZnO NPs.

    Optimisation, Synthesis, and Characterisation of ZnO Nanoparticles Using Leonotis ocymifolia (L. ocymifolia) Leaf Extracts for Antibacterial and Photodegradation Applications · 2024 · DOI

  • The study identifies a gap in the use of understudied and underutilized plant extracts for the synthesis of zinc oxide nanoparticles. The green synthesis method using biological resources is a sustainable alternative to chemical and physical methods.

    Optimisation, Synthesis, and Characterisation of ZnO Nanoparticles Using Leonotis ocymifolia (L. ocymifolia) Leaf Extracts for Antibacterial and Photodegradation Applications · 2024 · DOI

  • Training that treats Nanomaterials and Chemistry at the Limit of Size as a settled body of findings misrepresents its condition; training that treats it as all open questions fails to convey what has been secured.

    When Small Changes Everything: A Historical Development Review of Nanomaterials and Chemistry at the Limit of Size · 2026 · DOI

  • However, the physicochemical molecular mechanism underlying nanoparticle (NP) toxicity remains poorly understood.

    Effect of carbon black nanoparticles on the albumin secondary structure · 2026 · DOI

  • This response suggests a compensatory repair mechanism to maintain barrier integrity, however it was insufficient to prevent pathogen invasion and intracellular survival.

    Silver nanoparticles at sub-cytotoxic levels increase enteric pathogen invasion by compromising intestinal epithelial barrier integrity · 2026 · DOI

Most-cited papers in Nanoparticles: synthesis and applications

Most recent work

Find a gap in your own Nanoparticles: synthesis and applications sub-topic

This page shows what the Nanoparticles: synthesis and applications literature already flags as unresolved. To narrow it to your specific question, run the guided finder — it searches the gap library on demand and checks candidates against 250M+ OpenAlex works.

Open the Research Gap Finder →

Related topics in Materials Science

Machine Learning in Materials Science
472 open questions
2D Materials and Applications
211 open questions
Nanoparticle-Based Drug Delivery
192 open questions
Natural Fiber Reinforced Composites
164 open questions
Nanocomposite Films for Food Packaging
124 open questions
Graphene research and applications
124 open questions
Metamaterials and Metasurfaces Applications
118 open questions
Corrosion Behavior and Inhibition
109 open questions
320 open questions have been extracted from the limitations and future-work passages of 1,118 Nanoparticles: synthesis and applications papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

Tools for your next paper

Gaps & Literature SearchFind open questions in any field — 120,000+ open gaps mined from our own library.Pre-CheckIs your paper ready? A Tier 1–5 acceptance probability in seconds.Journal FinderA ranked shortlist of target journals from a 17,500-venue index.Duplicate Publication CheckerCheck prior-publication & salami-slicing risk across 8 sources.Citation GeneratorFreeA DOI or title → APA, MLA, Vancouver, Chicago, BibTeX, RIS. No signup.Graphical Abstract MakerFreeTurn your findings into a colorblind-safe graphical abstract.

Compare the category — Honest roundups of the AI research tools, ours listed alongside the alternatives.

Command palette

Jump anywhere, run any action.