To address the challenges of global water pollution and scarcity, solar-driven interfacial water evaporation has emerged as a viable method for producing clean water. Nevertheless, the efficacy of most extant interfacial evaporation systems were contingent upon abundant sunlight, thereby constraining their utility. To surmount the limitation, this study introduced a coupled tunable photo-thermal and Joule-heating process for interfacial evaporation utilizing carbon fiber (CF) modified by N-doped carbon nanotubes (NC). The CF@NC had highly graphitized structure, excellent light-absorbing ability and hydrophilicity, which made it suitable for photo-thermal and Joule-heating conversion. Under the coupled effect of photo-thermal and Joule-heating, the evaporation rate reached 10.37 kg·m·h with 1 sun and 2.5 V, while the rate was 1.81 kg·m·h under only 1 sun and 7.63 kg·m·h with 2.5 V. Meanwhile, the CF@NC fabric evaporator also showed promising potential in salt tolerance and dye wastewater treatment. Under continuous all-day operation, a superior purification performance was achieved, which realized long periods of no salt operation and effectively remove the Rhodamine B and methyl orange in the water. Considering the high evaporation rate and reliable water yields obtained from simulated seawater and dye wastewater, the CF@NC fabric evaporator hold great promise for highly efficient purification.

中文翻译：

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通过耦合光热和焦耳热效应增强 CF@NC 织物的界面蒸发

为了应对全球水污染和水资源短缺的挑战，太阳能驱动的界面水蒸发已成为生产清洁水的可行方法。然而，大多数现存界面蒸发系统的功效取决于充足的阳光，从而限制了它们的实用性。为了克服这一限制，本研究引入了一种耦合可调光热和焦耳加热过程，利用氮掺杂碳纳米管（NC）改性的碳纤维（CF）进行界面蒸发。 CF@NC具有高度石墨化结构、优异的光吸收能力和亲水性，使其适合光热和焦耳热转换。在光热和焦耳热的耦合作用下，1太阳、2.5 V时蒸发速率达到10.37 kg·m·h，而仅1太阳、7.63 kg·m·h时蒸发速率为1.81 kg·m·h。 h，2.5 V。同时，CF@NC织物蒸发器在耐盐性和染料废水处理方面也显示出广阔的潜力。在全天连续运行的情况下，达到了优越的净化性能，实现了长时间无盐运行，有效去除水中的罗丹明B和甲基橙。考虑到从模拟海水和染料废水中获得的高蒸发速率和可靠的产水量，CF@NC 织物蒸发器在高效净化方面具有广阔的前景。