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<p>Water pollution remains a critical global challenge driven by industrialization, urban expansion, and agricultural activities, requiring efficient and sustainable wastewater treatment technologies. Graphene oxide (GO)–based composites have gained increasing attention due to their high adsorption capacity and tunable surface chemistry; however, intrinsic limitations of pristine GO, such as aggregation and poor recoverability, have driven the development of supported and hybrid composite systems. This study systematically maps and quantifies the scientific evolution of GO composites applied to wastewater treatment, under the hypothesis that research trends increasingly favor hybrid materials designed to enhance stability, selectivity, and reusability. A comprehensive bibliometric analysis of 406 peer-reviewed articles published between 2012 and 2024 was conducted using Scopus and Web of Science databases, with bibliometric indicators and network analyses performed in Bibliometrix<sup>®</sup> and VOSviewer<sup>®</sup>. The results indicate a rapidly expanding research field, with an annual publication growth rate of ~ 7.9% and an average of 55.1 citations per document. Asia dominates scientific production (75.9%), led by China (49.2%), followed by India (9.2%) and Iran (5.24%). Keyword and cluster analyses confirm adsorption as the central research theme, with a marked shift after 2020 toward GO-based hybrid composites supported on polymers, biopolymers, aerogels, and magnetic matrices for the removal of heavy metals, dyes, and emerging contaminants. Overall, this bibliometric review highlights key research trends, geographic disparities, and existing gaps related to scalability, regeneration, economic feasibility, and international collaboration, providing strategic guidance for future application-driven and sustainable wastewater treatment research.</p> Graphical abstract <p></p>

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Mapping the research landscape of graphene oxide composites in wastewater treatment: a comprehensive bibliometric study

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • Brenda Letícia de Sousa Pessoa,
  • Heloissy Constantino Mascarenhas Simão,
  • Larissa Lopes Vieira Leite,
  • Moisés Azarias Manhice,
  • Felipe Tadeu Fiorini Gomide,
  • Vagner Fernandes Knupp,
  • José Izaquiel Santos da Silva,
  • Fabiano Luiz Naves

摘要

Water pollution remains a critical global challenge driven by industrialization, urban expansion, and agricultural activities, requiring efficient and sustainable wastewater treatment technologies. Graphene oxide (GO)–based composites have gained increasing attention due to their high adsorption capacity and tunable surface chemistry; however, intrinsic limitations of pristine GO, such as aggregation and poor recoverability, have driven the development of supported and hybrid composite systems. This study systematically maps and quantifies the scientific evolution of GO composites applied to wastewater treatment, under the hypothesis that research trends increasingly favor hybrid materials designed to enhance stability, selectivity, and reusability. A comprehensive bibliometric analysis of 406 peer-reviewed articles published between 2012 and 2024 was conducted using Scopus and Web of Science databases, with bibliometric indicators and network analyses performed in Bibliometrix® and VOSviewer®. The results indicate a rapidly expanding research field, with an annual publication growth rate of ~ 7.9% and an average of 55.1 citations per document. Asia dominates scientific production (75.9%), led by China (49.2%), followed by India (9.2%) and Iran (5.24%). Keyword and cluster analyses confirm adsorption as the central research theme, with a marked shift after 2020 toward GO-based hybrid composites supported on polymers, biopolymers, aerogels, and magnetic matrices for the removal of heavy metals, dyes, and emerging contaminants. Overall, this bibliometric review highlights key research trends, geographic disparities, and existing gaps related to scalability, regeneration, economic feasibility, and international collaboration, providing strategic guidance for future application-driven and sustainable wastewater treatment research.

Graphical abstract