A one-step on air synthesis of water-soluble composites from carboxymethylcellulose sodium salt (CMC) and Cu₂O nanoparticles, ca. 10 nm in diameter is described. The polymer matrix stabilizes the nanoparticles against aggregation via electrostatic interaction between carboxyl groups of the polymer and Cu(1+)-ions on the nanoparticle surface. Being dispersed in water, the composites initiate a photocatalytic oxidation of an azo dye Methyl Orange. The oxidation proceeds in the presence of oxygen and accelerates significantly up to a 100 conversion when hydrogen peroxide is added. The Cu₂O-CMC composites have potential for photochemical decomposition of organic contaminants in water waste.

从羧甲基纤维素钠盐（CMC）和Cu ₂ O纳米粒子进行空气合成水溶性复合材料的一步，大约 描述了直径10nm。聚合物基质通过聚合物的羧基与纳米颗粒表面上的Cu（1+）离子之间的静电相互作用，稳定了纳米颗粒，防止聚集。分散在水中后，复合材料会引发偶氮染料甲基橙的光催化氧化。在存在氧气的情况下，氧化会发生，当添加过氧化氢时，氧化会显着加速至100转化。Cu ₂ O-CMC复合材料具有光化学分解废水中有机污染物的潜力。