A pure phase of LaCoO₃ perovskite was low-temperature synthesized via a novel bamboo-mediated sol-gel route, which can meanwhile regulate Co species and oxygen vacancies of the catalyst by pretreatment of bamboo powder (BP). In the absence of BP, segregated phases of La₂O₃ and Co₃O₄ were found. Characterization results reveal that COO- in BP performs as a complexing agent to chelate metal ions, while the −OH groups can promote the dispersion of precursors in the formed sol solution. On the other hand, chelation effect together with bio-reduction of organic carbon is in charge of large content of bulk Co²⁺ in LaCoO₃, resulting in high amounts of oxygen vacancies that are helpful for total propane oxidation. However, Na⁺ and K⁺ species originated from BP easily lead to the formation of carbonate species on the catalyst surface, playing a negative role in propane oxidation activity. Thus, an optimum pretreatment under acid solution (pH = 1) is adopted to address the above issue. As a result, BP-1-mediated (BP pretreated under pH = 1 solution) biosynthesis of LaCoO₃ exhibits a significantly high reaction rate of 3.78 μmol_C3H8 g⁻¹·s⁻¹ at 300 °C. Moreover, the obtained catalyst delivers excellent thermal stability against 5 vol% H₂O and 5 vol% CO₂.

通过新型的竹介导的溶胶-凝胶法低温合成了LaCoO ₃钙钛矿的纯相，同时可以通过预处理竹粉（BP）调节催化剂的Co种类和氧空位。在没有BP的情况下，发现了La ₂ O ₃和Co ₃ O _4的偏析相。表征结果表明，BP中的COO-作为螯合金属离子的络合剂，而-OH基团可以促进前体在形成的溶胶溶液中的分散。另一方面，螯合效应与有机碳的生物还原一起导致LaCoO ₃中大量的大量Co ²⁺含量。，导致大量的氧空位，有助于丙烷的完全氧化。但是，源自BP的Na ⁺和K ⁺物种很容易导致在催化剂表面形成碳酸盐物种，对丙烷氧化活性起负面作用。因此，采用了在酸性溶液（pH = 1）下的最佳预处理可以解决上述问题。其结果是，BP-1介导的（BP在pH预处理= 1种溶液）LaCoO的生物合成_3个展品3.78微摩尔一个显著高的反应速率_C3H8 克^-1 ·秒^-1在300℃下。此外，所获得的催化剂对5体积％的H ₂ O和5体积％的CO ₂具有优异的热稳定性。。