Peach stones were used as raw material for the synthesis of activated carbons with different properties. Firstly, peach stones were chemically activated using a 12 M H₃PO₄ solution and carbonized under flowing air (400 °C). The obtained activated carbon, named as PS, is characterized by a high surface development (S_BET = 1262 m² g⁻¹) and acidic character (pH_PZC = 4.2). A fraction of PS was further carbonized under N₂ atmosphere at 800 °C to remove surface functionalities and to increase its basicity (PS-800). In addition, a Pt catalyst supported on PS (3% w/w Pt/PS) was synthesized by incipient wetness impregnation, resulting in a considerable hydrophilicity increasing. The synthesized materials were tested in the catalytic wet peroxide oxidation (CWPO) of highly concentrated solutions of 4-nitrophenol (4-NP, 5 g L⁻¹) during 24 h experiments, conducted at relatively mild operating conditions (T = 50–110 °C, pH = 3, catalyst load = 2.5 g L⁻¹ and [H₂O₂]₀ = 17.8 g L⁻¹, corresponding to the stoichiometric amount of H₂O₂ needed for the complete mineralization of 4-NP). It was observed that the increase of electron-donating functionalities in PS-800 promotes the generation of reactive HO radicals, being the activity towards CWPO twice higher than that obtained with the pristine PS. Besides, increasing operating temperature substantially enhances CWPO, finding a 80% of 4-NP removal at 110 °C. On the other hand, despite the sharp increment in H₂O₂ decomposition due to the presence of Pt particles in Pt/PS catalyst, this decomposition is inefficient in all cases, with a consequent poor pollutant removal. This can be attributed to the recombination of HO radicals into non-reactive species −scavenging effects, promoted by the hydrophilicity of the catalyst.

桃石被用作合成具有不同性质的活性炭的原料。首先，使用12 MH ₃ PO ₄溶液对桃石进行化学活化，然后在流动的空气中（400°C）将其碳化。获得的称为PS的活性炭的特征在于高的表面显影性（S _BET  ＝ 1262m ²  g ^-1）和酸性特征（pH _PZC  ＝ 4.2）。一部分PS在N ₂下进一步碳化在800°C的大气压下去除表面功能并增加其碱度（PS-800）。另外，通过初期湿润浸渍来合成负载在PS上的Pt催化剂（3％w / w Pt / PS），导致亲水性显着提高。在相对温和的操作条件下（T = 50-110），在24小时的实验过程中，对高浓度的4-硝基苯酚（4-NP，5 g L ^-1）的溶液进行湿法催化湿式过氧化氧化（CWPO）进行了测试°C，pH = 3，催化剂负载= 2.5 g L ^-1，[H ₂ O ₂ ] ₀  = 17.8 g L ^-1，对应于H ₂ O ₂的化学计量是4-NP完全矿化所必需的）。观察到，PS-800中供电子功能的增加促进了反应性HO自由基的生成，这是对CWPO的活性比原始PS所获得的活性高两倍。此外，提高工作温度可显着提高CWPO，在110°C时可去除80％的4-NP。另一方面，尽管由于在Pt / PS催化剂中存在Pt颗粒而导致H ₂ O ₂分解急剧增加，但是这种分解在所有情况下都是无效的，因此污染物去除较差。这可以归因于由催化剂的亲水性促进的HO基团重组为非反应性物种-清除作用。