ArticleScientific reports2026
Design and application of a magnetically recoverable citric acid-functionalized graphene oxide nanocomposite for ultrasound-assisted green synthesis of naphthopyrimidines.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This study reports the synthesis of a novel acidic and magnetic nanocatalyst based on graphene oxide (GO), iron oxide (Fe₃O₄), and silica (SiO₂), functionalized with citric acid (CA), which was successfully synthesized and characterized by FT-IR, XRD, SEM, TEM, EDX, TGA, VSM, and Raman spectroscopy. The resulting nanocomposite (GO/Fe₃O₄@SiO₂@CA) exhibited a well-defined core-shell structure, high thermal stability, and superparamagnetic properties. This material was employed as a recyclable and green catalyst for the one-pot multicomponent synthesis of naphthopyranopyrimidines derivatives in ethanol under ultrasonic conditions. The catalyst showed excellent efficiency, product yields (88-97%) within remarkably short times (10-20 min), and was easily recoverable by an external magnet. Additionally, it was able to retain its catalytic activity over seven consecutive cycles with negligible loss in performance. These results highlight GO/Fe₃O₄@SiO₂@CA as a sustainable and high-performance nanocatalyst for green organic synthesis. In this study, we synthesized a mild, non-toxic, green, and multi-acid catalyst, and were able to increase the product formation efficiency and reduce the time with cavitation energy. It seems that this catalyst has the potential to be used for the preparation of other one-pot products.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.