This study presents the synthesis of a CuO-TiO2–saponite ternary nanocomposite via a hydrothermal method, designed to efficiently remove bromocresol green dye. Characterization techniques, including X-ray diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy, confirmed significant interactions between metal oxide nanoparticles and the clay mineral matrix. Diffuse reflectance and photoluminescence analyses revealed a narrow band gap and surface defects, such as oxygen vacancies, enhancing the material’s photocatalytic properties. Under UV irradiation, the nanocomposite achieved 83% discoloration of bromocresol green dye within 150 min. The inhibitor studies identified hydroxyl and superoxide radicals as key species in the degradation mechanism. This work underscores the potential of clay-mineral-based nanocomposites, where clay minerals function both as structural support and as enhancers of the semiconductor’s photocatalytic activity.

Pollyana Trigueiro

Willams A. Albuquerque

Aimée G. Jerônimo

Monica Sá Rodrigues

Emanoel L. Tavares França

Ramón Raudel Peña-Garcia

Minerals

MINERALS (ISSN 2075-163X) 是一本国际开放获取期刊，涵盖矿物学、经济矿产资源、矿产勘探、创新采矿技术和矿物加工进步等广泛领域。它发表评论、定期研究论文和简短的笔记。我们的目标是鼓励科学家尽可能详细地发表他们的实验和理论结果。论文的长度没有限制。必须提供完整的实验细节，以便重现结果。

"Minerals" (ISSN 2075-163X) is an international open-access journal that covers a wide range of fields including mineralogy, economic mineral resources, mineral exploration, innovative mining technologies, and advancements in mineral processing. The journal publishes commentaries, regular research papers, and short notes. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no limit on the length of papers, and complete experimental details must be provided to allow for the reproducibility of results.

《Minerals》（ISSN 2075-163X）是一本国际开放获取期刊，涵盖矿物学、经济矿产资源、矿产勘探、创新采矿技术和矿物加工等多个领域。期刊接受评论文章、定期研究论文和简短的笔记。我们的目标是鼓励科学家尽可能详细地发表他们的实验和理论结果。论文长度没有限制，要求提供完整的实验细节，以便他人能够重现结果。

Category	Quartile
地球科学	4
地球科学, 地球化学与地球物理	3
地球科学, 矿物学	3
地球科学, 矿业与矿物加工	3

CuO-TiO2–Saponite Ternary Nanocomposite for Efficient Removal of Bromocresol Green Dye

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Journal Info

Category	Quartile
MINING & MINERAL PROCESSING	2