A one-step strategy was used to obtain GO_Ru/Fe₃O₄@CA nanoparticles, constituted of graphene oxide (GO) supporting Ru/Fe₃O₄ NPs functionalized by citric acid (CA). The new nanomaterial consists of: (i) high surface area, and moieties enriched GO, stabilizing and supporting (ii) magnetic NPs exposing additional functional groups for -SO₃H modification and catalysis; and, (iii) further Ru Bronsted acid sites. In particular, the results evidence that sawdust can be directly hydrolyzed in water, thanks to the size and its mixed nature, without the need for expensive solvents and pre-treatments. The yields of glucose, xylose, and TRS, during hydrolysis, at 1 mg_catalyst/mg_biomass and 190 °C, increased up to 44.5 %, 83.2 % and 60.6 %, after 4 h, and up to 56.2 %, 97.0 % and 71.4 %, after 6 h, respectively; while at 150 °C and after 4 h, they increased up to 35.4 %, 67.2 %, 50 %, respectively. The GO_Ru/Fe₃O₄@CA@SO₃H catalyst shows the ability to produce valuable products and high stability.

采用一步策略来获得GO_Ru / Fe ₃ O ₄ @CA纳米颗粒，该纳米颗粒由氧化石墨烯（GO）支撑，柠檬酸（CA）官能化了Ru / Fe ₃ O ₄ NP。新的纳米材料包括：（i）高表面积和富集GO的部分，稳定和支撑（ii）磁性NPs暴露出用于-SO ₃ H修饰和催化的附加官能团；（iii）进一步的布朗斯台德酸位。尤其是，结果证明，由于木屑的大小和其混合特性，可以将木屑直接在水中水解，而无需昂贵的溶剂和预处理。水解期间葡萄糖，木糖和TRS的产量为1 mg_催化剂/ mg_生物质和190°C在4 h后分别升高至44.5％，83.2％和60.6％，在6 h后分别升高至56.2％，97.0％和71.4％; 而在150°C和4 h后，它们分别增加了35.4％，67.2％和50％。GO_Ru / Fe ₃ O ₄ @ CA @ SO ₃ H催化剂具有生产有价值的产品的能力和高稳定性。