A new hybrid system is proposed to capture CO₂ as well as generate electricity with the low CO₂ inlet condition of confined space. Within the system, a novel photocatalytic porous framework coated by g-C₃N₄/TiO₂ is prepared to avoid the inhibition of microalgae growth caused by the direct addition of photocatalyst. Under 0.8% v/v CO₂ inlet condition, chemical oxygen demand (COD) yields from the photocatalytic framework immersed in the phosphate buffer and the algae suspension are 1.63 mg L⁻¹ h⁻¹ and 1.90 mg L⁻¹ h⁻¹, respectively. CO₂ sequestration rate of a 60L cylindrical photobioreactor increases from 12% to 22%. The combination modes between photobioreactor and photocatalytic framework can be selected flexibly depends on the demands of application. This hybrid system not only benefits to enhance the CO₂ sequestration rate of photobioreactor but also has the potential to be served as the power source in a confined space.

提出了一种新的混合系统，以捕获CO ₂并在密闭空间的低CO ₂入口条件下发电。在该系统内，制备了一种新型的涂有gC ₃ N ₄ / TiO _2的光催化多孔骨架，以避免抑制由直接添加光催化剂引起的微藻生长。在0.8％v / v CO ₂进入条件下，浸入磷酸盐缓冲液和藻类悬浮液中的光催化框架的化学需氧量（COD）产量为1.63 mg L ^-1  h ^-1和1.90 mg L ^-1  h ^-1，分别。一氧化碳₂60L圆柱形光生物反应器的固存率从12％增加到22％。光生物反应器和光催化框架之间的结合方式可以根据应用需求灵活选择。该混合系统不仅有益于提高光生物反应器的CO ₂固存速率，而且具有在受限空间中用作动力源的潜力。