Emphasizing green chemistry, using non-toxic PEG/water as a solvent aligns with efforts to reduce hazardous waste without study enhances compromising performance. The versatility of the Fe3O4@SiO2- Do

The gap

Consensus across the literature

Supporting evidence — 3 representative gaps

• Towards a sustainable tomorrow: advancing green practices in organic chemistry (2024) · doi

  Sustainability in organic synthesis has emerged as a pivotal challenge for the chemistry community, driven by increasing global awareness and a concerted effort to reduce waste generation.10,38,39,207,333 The past decade has witnessed signifi- cant strides in integrating green chemistry principles, encom- passing strategies such as enhancing atom economy, devising alternative synthetic routes for feedstocks, promoting sustain- able biocatalysis, utilizing eco-friendly solvents—preferably water—designing safer chemicals, and prioritizing waste man- on recyclability.10,17,21,23,333,334 agement with a Additionally, the burgeoning field of nanotechnology holds promise for chemistry, mainly through utilizing novel NPs catalysis, which can offer enhanced efficiency and selectivity compared to traditional methodologies.212,266 Leveraging active metals in aqueous micellar conditions presents a viable option;321 however, chal- lenges such as low reactivity and selectivity, particularly with non-precious metals, must be addressed.228 Advancements towards achieving catalysis at the parts per million level using precious metals like Pd in aqueous media represent significant strides toward sustainability.259,262,264,265,269,335 revolutionizing synthetic focus The integration of organometallic catalysts with designer surfactants has yielded promising outcomes in micellar catalysis,137,138,185 with further potential seen in extending micellar catalysis with nanocatalysis to address environmental concerns.169 Notably, the recyclability of catalysts and reaction media, alongside the enhanced stability of NPs within the micellar core, presents exciting prospects for reducing toxic- organic waste and unlocking unique reactivities unattainable in organic solvents.135,184,267 However, it’s imperative to con- sider potential risks associated with metal contamination of water in aqueous chemistry, as well as the toxicity of designer surfactants.162,336 Careful attention to surfactant molecules’ in their biodegradability and toxicity profiles is essential design. Notably, some of the commercially available surfac- tants, like alkyl benzene sulfonate-based anionic surfactants, quaternary ammonium ethoxylated, and alcohol ethoxylates, cause harmful effects on aquatic/terrestrial ecosystems.162,337 Also, PEG ethers are suspected to impact skin toxicity signifi- cantly.338 Therefore, while designing a surfactant molecule, its biodegradability and toxicity should be carefully considered. The Lipshutz group has tackled the problem of toxicity caused by PEG ethers by creating a surfactant known as Savie,183 which is based on polysarcosine and vitamin E. However, any further modifications to this surfactant must maintain its necessary benign properties while addressing its toxicity con- cerns to avoid potential toxicological issues. Notably, due to the high solubility profile, toxic contaminants or organic pollu- tants are highly soluble in micellar solutions resulting in the professionally.339 need tackle wastewater activities to 6308 | Green Chem., 2024, 26, 6289–6317 This journal is © The Royal Society of Chemistry 2024 Published on 03 May 2024. Downloaded by Kirikkale University on 3/11/2026 12:40:39 PM. View Article OnlineGreen Chemistry

  Keywords: chemistry toxicity micellar organic catalysis surfactant waste green metals aqueous surfactants potential notably sustainability signifi
• Nanomaterial Driven Catalysis for Sustainable Biofuel and Bio-Based Aromatic Production: Toward a Circular and Carbon Neutral Bioeconomy (2026) · doi

  Even though nanotechnology holds incredible promise for sustainable energy production, there are still quite a few hurdles to overcome. One major issue is the steep cost of creating and purifying nanomaterials, which can range anywhere from £0.5 to £500 per kilogram, depending on what they’re made of and how pure they are. On top of that, we have to consider the potential toxicity of nanoparticles, their ability to linger in the environment, and the risk of bioaccumulation, all of which raise serious ecological concerns that need to be tackled with better safety standards and environmental monitoring. There are also technical challenges to face, like catalyst deactivation, variations in feedstock, and the limited scalability of pilot these it operations, which make technologies to market on a large scale. Plus, the lack of consistent lifecycle data and standardized assessment protocols makes it difficult to compare different catalytic systems effectively. to bring tough 6. CONCLUSION The combination of cutting-edge nanomaterials with bio- based aromatic synthesis is a game-changer for creating sustainable energy and materials. Nanocatalysts like graphene derivatives, metal oxides, and metal-organic frameworks (MOFs) boost catalytic efficiency, speed up reaction rates, and enhance recyclability. Meanwhile, biomass-derived aromatics, such as those from lignin and furan compounds, provide eco-friendly alternatives to traditional fossil fuels like benzene, toluene, and xylene. By bringing these technologies together in a circular biorefinery setup, we can produce both biofuels and valuable chemicals, helping us move towards carbon neutrality and a smaller environmental footprint. However, we still need to tackle issues like cost, toxicity, and teamwork across disciplines and through scalability supportive policies. 7. FUTURE RESEARCH SCOPE Future research in this area should really hone in on making nanocatalysts more efficient throughout their lifecycle. This means developing materials that are not only biodegradable and low-cost but also recyclable, all while reducing environmental risks. By merging biological systems with nanocatalytic ones, we can achieve multi- step conversions at milder reaction conditions, leveraging the precision of enzymes alongside the effectiveness of nanomaterials. To truly assess the industrial viability and techno- long-term sustainability, we need economic analyses and lifecycle assessments. Pairing biomass valorization with renewable hydrogen production using photoelectrocatalytic nanomaterials could lead us to completely artificial intelligence and machine learning have the potential to take catalyst design to the next level by predicting the best structures and reaction conditions. Lastly, it's crucial to establish global policies and standardized safety guidelines the for commercialization of these technologies in industrial biorefineries. the use of nanomaterials systems. Plus, carbon-neutral thorough support to REFERENCES Ahranjani, M. R., Fattahi, M., & Khodadadi, A. A. (2024). Reusability and catalytic performance of sulfonated carbon nanotube nanocatalysts transesterification reactions. Renewable Energy Advances, 16, 112–125. in Ali, M., Prakash, P., & Singh, R. (2024). Metallic oxide nanoparticle-enhanced lipid productivity in microalgae biofuel systems. Bioresource Technology Reports, 25, 105–114. Cheruvathoor Poulose, A., Mathew, S., & Thomas, S. (2023). Graphene oxide nanocatalysts for biodiesel production: Enhanced yield and recyclability. Fuel Processing Technology, 252, 107–123. Cong, X., Zhao, W., & Zhang, Y. (2023). Magnetic MOF- derived catalysts for dual biodiesel and hydrogen production. Applied Catalysis B: Environmental, 320, 122014. El-Kady, M., Ibrahim, M. A., & Elnaggar, M. (2023).

  Keywords: nanomaterials production environmental like systems nanocatalysts energy cost need technologies lifecycle catalytic reaction carbon sustainable
• Sustainable synthesis of quinazolinones: exploring multicomponent reactions with a novel magnetic palladium catalyst (2026) · doi

  Emphasizing green chemistry, using non-toxic PEG/water as a solvent aligns with efforts to reduce hazardous waste without study enhances compromising performance. The versatility of the Fe3O4@SiO2- Dop/Phen-Pd (0) catalyst offers potential extensions beyond quinazolinone synthesis to include other vital heterocyclic compounds. This the methodology of synthesizing biologically active molecules and sets the stage for broader applications in sustainable and cost-effective focus on chemical production. Future optimizing its the applicability in other reactions, or scaling up its production for industrial use. research could performance, exploring catalyst’s

  Keywords: performance catalyst production emphasizing green chemistry using toxic water solvent aligns efforts reduce hazardous waste