Carbon nanomaterials treated by combination of oxidation and flash for highly efficient solar water evaporation

Cong, Chang; Gao, Min; Xing, Guangyu; Wu, Ying; Liu, Lu; Morshed, Mainul; Wang, Jixiao; Wang, Zhi

doi:10.1016/j.chemosphere.2021.130248

Cited by 40 publications

(16 citation statements)

References 50 publications

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“…Figure 3 i shows the comparison of the evaporation rate and efficiency of the C-5.4 sample with those reported under 1 sun. It can be seen that the evaporation performance was better than the majority of those reported previously [ 11 , 13 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 ] but a little worse than that reported in the literature [ 40 ]. This is because, in this paper, we took into account the decrease in the evaporation enthalpy with the sample.…”

Section: Resultsmentioning

confidence: 52%

Flower-Shaped Carbon Nanomaterials for Highly Efficient Solar-Driven Water Evaporation

Wang¹,

Xu²,

Yao

et al. 2022

Molecules

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Solar-driven interface water evaporation is an energy-saving, environmentally friendly, and efficient seawater desalination and wastewater treatment technology. However, some challenges still restrict its further industrial development, such as its complex preparation, heavy metal pollution, and insufficient energy utilization. In this study, a photothermal layer based on flower-shaped carbon nanoparticles is presented for highly efficient solar-driven interface evaporation for water treatment applications. The results show that the surface of the prepared carbon nanomaterials presents a flower-shaped structure with an excellent light absorption capacity and a large specific surface area. Moreover, the C-5.4 (Carbon-5.4) sample has an evaporation rate of 1.87 kg/m2/h and an evaporation efficiency of 87%—far higher than most photothermal materials. In addition, carbon nanomaterials have an excellent ion scavenging capacity, dye purification capacity, and outdoor practical performance. This study provides a new solution for the application of carbon nanomaterials in the field of water purification.

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Section: Resultsmentioning

confidence: 52%

Flower-Shaped Carbon Nanomaterials for Highly Efficient Solar-Driven Water Evaporation

Wang¹,

Xu²,

Yao

et al. 2022

Molecules

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“…Typical evaporation rate of SSG from carbonaceous materials, plasmonic metals, polymeric materials, and semiconductors. [19,[23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] On the other hand, photothermal polymeric materials feature advances in providing robust hybrid structures of combining two or more types of photothermal agents. [80][81][82][83] Polypyrrole (PPy), [84][85][86] polyaniline (PAn), [33,34,87] polythiophene (PT), [83] and their derivatives are some of the common polymers investigated for photothermal purpose.…”

Section: Carbonaceous and Polymeric Materialsmentioning

confidence: 99%

“…Typical evaporation rate of SSG from carbonaceous materials, plasmonic metals, polymeric materials, and semiconductors. [ 19,23–41 ] …”

Section: Photothermal Materials Choicesmentioning

confidence: 99%

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State‐of‐the‐Art Advances, Development, and Challenges of Metal Oxide Semiconductor Nanomaterials for Photothermal Solar Steam Generation

Tan

Yap

Zheng

et al. 2022

Advanced Sustainable Systems

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Solar steam generation has drawn high levels of attention from the research community in recent years due to its wide application and abundantly available energy source—sunlight. To the best of the author's knowledge, a specialized overview of photothermal semiconductor solar steam generation has not been conducted to date. In this review, the recently reported solar evaporators using metal oxide semiconductors as the photoabsorber material are investigated, from the perspective of nanostructure, synthesis method, and installation method. A timeline sequence map is generated with the CiteSpace analysis tool to visualize the trend of metal oxide semiconductors as photoabsorbers. The nanostructure of metal oxide semiconductor is emphasized, due to its significant effect on regulating photothermal efficiency in solar steam generation. In addition, other considerations are suggested to enable a fair evaluation of future synthesized photoabsorbers, including cost, stability, reproducibility, recyclability, and regenerative ability. A brief summary of divergent application of solar steam generation is conducted to show the merits of solar steam generation, as well to provide insights for production of photoabsorbers targeted to varying usage and scenarios. Furthermore, the challenges and opportunities of metal oxide solar steam generation system are elaborated from the viewpoint of the authors, with the aim to provide useful insights for future development of photothermal solar steam generation.

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“…However, they are infeasible for remote and underdeveloped areas because of their high power consumption and complex operating system . Lately, a green process named “air–water interfacial solar heating” has been employed for seawater desalination. , Solar evaporators could greatly enhance the water evaporation rate by avoiding the heat loss to the beneath bulk water. , Under one sun solar irradiance, the air–water interface temperature can reach temperatures in the range of 40–70 °C, − which may cause water quality safety risks because the volatile organic compounds (VOCs) in seawater are more likely to evaporate and condense into condensed freshwater. Moreover, VOCs were detected in most marine areas around the world. − The concentration of the VOCs in the collected condensed freshwater may even be concentrated by distillation, which is the Achilles’ heel of solar distillation .…”

Section: Introductionmentioning

confidence: 99%

Removal of Typical Volatile Organic Compounds in Condensed Freshwater by Activated Persulfate during Interfacial Solar Distillation

Xiao

Zhou

et al. 2021

ACS EST Water

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Recently, seawater desalination based on interfacial solar heating has attracted attention because of its environmental protection and high photothermal conversion efficiency. However, the high air–water interface temperature may cause freshwater quality safety risks because the volatile organic compounds (VOCs) in seawater are more likely to evaporate and condense into freshwater. In this work, typical VOCs (phenol) were prevented from entering into the condensed freshwater by using activated persulfate to take full advantage of interfacial solar distillation. The results showed that the addition of both peroxodisulfate (PDS) and peroxymonosulfate (PMS) could effectively reduce the concentration of phenol in condensed freshwater. The phenol’s distillation concentration rate (R D) was reduced from 74.4% to 14.3% with PMS and 20.5% with PDS. The Cl– was the main factor for activation of PMS, while carbon black, light, and heat were the main factors for activation of PDS. Meanwhile, PMS is better suited for removing VOCs due to its lower oxidant dosage and chlorinated disinfection byproducts compared with PDS. Finally, when real seawater samples were used as the source water for solar distillation, the water quality of typical indicators was lower than the limits set by Drinking Water Quality in China, US EPA, and WHO.

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Carbon nanomaterials treated by combination of oxidation and flash for highly efficient solar water evaporation

Cited by 40 publications

References 50 publications

Flower-Shaped Carbon Nanomaterials for Highly Efficient Solar-Driven Water Evaporation

Flower-Shaped Carbon Nanomaterials for Highly Efficient Solar-Driven Water Evaporation

State‐of‐the‐Art Advances, Development, and Challenges of Metal Oxide Semiconductor Nanomaterials for Photothermal Solar Steam Generation

Removal of Typical Volatile Organic Compounds in Condensed Freshwater by Activated Persulfate during Interfacial Solar Distillation

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