Chrysanthemum-like sulfur (VI) modified graphite carbon nitride (s/g-C₃N₄) was synthesized by sulfuring and sonicating bulk g-C₃N₄ at 800 kHz. The sulfuring relaxed the interlayer force of g-C₃N₄, and the sonication constructed its chrysanthemum-like structure which enhances the separation of photo-generated carriers and photochemical response. Density functional calculation and diffusion reflection spectra (DRS) verified that sulfur (VI) modification shifted down the valence band edge of g-C₃N₄ and improved the redox potentials of g-C₃N₄. The photocatalytic degradation efficiency of 4-nitrophenol (10 mg L^-1) by s/g-C₃N₄ was 49.3 times higher than that by bulk g-C₃N₄ under visible light irradiation (>400 nm).

通过在800 kHz下对块状g -C ₃ N ₄进行硫化和超声处理，合成了类菊花硫（VI）改性的石墨碳氮化物（s / g -C ₃ N ₄）。硫化消除了g -C ₃ N ₄的层间力，并且超声处理构造了其菊花状结构，从而增强了光生载流子的分离和光化学反应。密度泛函计算和扩散反射光谱（DRS）验证了硫（VI）修饰向下移动了g -C ₃ N ₄的价带边缘并提高了g -C ₃ N ₄的氧化还原电位。s / g -C ₃ N ₄对4-硝基苯酚（10 mg L ^-1）在可见光（> 400 nm）下的光催化降解效率比本体g -C ₃ N ₄的光催化降解效率高49.3倍。