Graphene oxide (GO) grafted with –SO₃H group giving a Brønsted acidic function was successfully applied for selective conversion of xylan to furfural (FA), which can be utilized as a platform chemical for a variety of value-added derivatives. The sulfonated graphene oxide (GO–SO₃H) was, for the first time, found to be superior for the selective production of FA with 86% yield from xylan in water as a green solvent. GO–SO₃H was successfully recycled after the reaction, and retained its catalytic activity without significant reduction. It is noteworthy that the Brønsted acid site acts as a key role in the production of furfural from xylan. Additionally, the presence of oxy-functional groups not only strengthen grafting of –SO₃H with GO which probably prevented leaching into the reaction medium, but also helps to enhance the sorption capacity of substrate on GO-SO₃H.

带有–SO ₃ H基团的布朗斯台德酸性官能团接枝的氧化石墨烯（GO）成功地用于木聚糖选择性转化为糠醛（FA），可用作多种增值衍生物的平台化学品。首次发现磺化氧化石墨烯（GO-SO ₃ H）在选择性生产FA方面表现优异，木聚糖在绿色溶剂中的产率为86％。反应后，GO-SO ₃ H成功地回收利用，并保持了其催化活性，而没有明显的还原。值得注意的是，布朗斯台德酸位点在木聚糖生产糠醛中起关键作用。此外，氧官能团的存在不仅增强了–SO _3的接枝带有GO的H可能阻止了向反应介质中的浸出，但也有助于提高底物在GO-SO ₃ H上的吸附能力。