Solar‐powered water evaporation provides a promising strategy for eco‐friendly and cost‐effective freshwater production. The exploration of high‐performance photothermal materials and the rational design of evaporation architectures are crucial in promoting solar steam generation efficiency. Herein, multidimensional MXene‐based composites with well‐organized heterojunction nanostructures are proposed as bifunctional photothermal materials. The solar thermal conversion, chemical stability, and photocatalysis degradation properties are enhanced by anchoring Co₃O₄ nanoparticles on delaminated ultrathin MXene nanosheets, compared with that of Ti₃C₂ MXene. Based on these advantages, an integrated 3D spherical evaporator is constructed using the Co₃O₄/Ti₃C₂ MXene‐based fabric. The evaporator shows its distinct advantages in maximizing the harvest of the hybrid energy from sunlight and the ambient environment, making it ideal for solar steam generation and synergetic water purification. An extremely high evaporation rate of 1.89 kg m⁻² h⁻¹ with a corresponding light‐to‐vapor energy conversion efficiency beyond the theoretical limit (130.4%) is achieved. More importantly, while the evaporation rate of the 2D evaporator significantly recedes upon the oblique sunlight irradiation, the evaporation rate of the 3D spherical evaporator is constantly high at different incident angles of sunlight, which satisfies the requirement of practical applications under moving sun.

中文翻译：

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在3D球形蒸发器中实现混合能量收集，以产生太阳能和产生协同净水

太阳能蒸发水为生态友好和具有成本效益的淡水生产提供了有希望的战略。高性能光热材料的探索和蒸发结构的合理设计对于提高太阳能蒸汽的产生效率至关重要。在本文中，具有良好组织的异质结纳米结构的多维MXene基复合材料被提议作为双功能光热材料。与Ti ₃ C ₂相比，通过将Co ₃ O ₄纳米颗粒锚固在分层的超薄MXene纳米片上，可以提高太阳热转换，化学稳定性和光催化降解性能。MXene。基于这些优点，使用基于Co ₃ O ₄ / Ti ₃ C ₂ MXene的织物构造了集成的3D球形蒸发器。蒸发器在最大程度地吸收阳光和周围环境的混合能量方面显示出其独特的优势，使其成为太阳能蒸汽产生和协同净水的理想选择。1.89 kg m ^-2  h ^-1的极高蒸发速率相应的光汽能量转换效率超过了理论极限（130.4％）。更重要的是，虽然2D蒸发器的蒸发率在斜向太阳光照射下会明显降低，但3D球形蒸发器的蒸发率在不同的太阳光入射角下始终很高，这满足了在移动的太阳下实际应用的要求。