Effects of Chemical and Geometric Microstructures on the Crystallization of Surface Droplets during Solvent Exchange

Choi, Howon; Wei, Zixiang; You, Jae Bem; Yang, Huaiyu; Zhang, Xuehua

doi:10.1021/acs.langmuir.1c00354

Cited by 10 publications

(5 citation statements)

References 39 publications

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“…Another type of MLs was fabricated on a prepatterned substrate. The prepatterned substrate was fabricated with a reported protocol. , Photoresist (AZ 1512) was spun coated on the OTS-coated glass substrate, and a photomask was subsequently attached to the substrate. The circular domains were protected by the photoresist, while the other area was etched with plasma during a typical lithography process.…”

Section: Methodsmentioning

confidence: 99%

Surface Microlenses for Much More Efficient Photodegradation in Water Treatment

Meng

et al. 2022

ACS EST Water

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The global need for clean water requires sustainable technology for purifying contaminated water. Highly efficient solar-driven photodegradation is a sustainable strategy for wastewater treatment. In this work, we demonstrate that the photodegradation efficiency of micropollutants in water can be improved by ∼2–24 times by leveraging polymeric microlenses (MLs). These microlenses (MLs) are fabricated from the in situ polymerization of surface nanodroplets. We found that photodegradation efficiency (η) in water correlates approximately linearly with the sum of the intensity from all focal points of MLs, although no difference in the photodegradation pathway is detected from the chemical analysis of the byproducts. With the same overall power over a given surface area, η is doubled by using ordered ML arrays, compared to heterogeneous MLs on an unpatterned substrate. A higher η from ML arrays may be attributed to a coupled effect from the focal points on the same plane that creates high local concentrations of active species to further speed up the rate of photodegradation. As a proof-of-concept for MLs-enhanced water treatment, MLs were formed on the inner wall of glass bottles that were used as containers for water to be treated. Three representative micropollutants (norfloxacin, sulfadiazine, and sulfamethoxazole) in the bottles functionalized by MLs were photodegraded by 30%–170% faster than in normal bottles. Our findings suggest that the MLs-enhanced photodegradation may lead to a highly efficient solar water purification approach without a large-sized solar collector. Such an approach may be particularly suitable for portable transparent bottles in remote regions.

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Section: Methodsmentioning

confidence: 99%

Surface Microlenses for Much More Efficient Photodegradation in Water Treatment

Meng

et al. 2022

ACS EST Water

Self Cite

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show abstract

“…The prepatterned substrate was fabricated with a reported protocol. 31,36 Photoresist (AZ 1512) was spun coated on the OTScoated glass substrate, and a photomask was subsequently attached to the substrate. The circular domains were protected by photoresist while the other area was etched with plasma during a typical lithography process.…”

Section: Methodsmentioning

confidence: 99%

Surface microlenses for much more efficient photodegradation in water treatment

Qi¹,

Xu²,

Meng³

et al. 2022

Preprint

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The global need for clean water requires sustainable technology for purifying contaminated water. Highly efficient solar-driven photodegradation is a sustainable strategy for wastewater treatment. In this work, we demonstrate that the photodegradation efficiency of micropollutants in water can be improved by ∼ 2-24 times by leveraging polymeric microlenses (MLs). These microlenses (MLs) are fabricated from the in-situ polymerization of surface nanodroplets. We found that photodegradation efficiency (η) in water correlates approximately linearly with the sum of the intensity from all focal points of MLs, although no difference in the photodegradation pathway is detected from the chemical analysis of the byproducts. With the same overall power over a given surface area, η is doubled by using ordered arrays, compared to heterogeneous MLs on an unpatterned substrate. Higher η from ML arrays may be attributed to a coupled effect from the focal points on the same plane that creates high local concentrations of active species to further speed up the rate of photodegradation. As a proof-of-concept for ML-enhanced water treatment, MLs were formed on the inner wall of glass bottles that were used as containers for water to be treated. Three representative micropollutants (norfloxacin, sulfadiazine, and sulfamethoxazole) in the bottles functionalized by MLs were photodegraded by 30% to 170% faster than in normal bottles. Our findings suggest that the ML-enhanced photodegradation may lead to a highly efficient solar water purification approach without a large solar collector size. Such an approach may be particularly suitable for portable transparent bottles in remote regions.

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“…As a crucial physical process, crystallization plays an important role in many industries including food processing [1] , [2] , pharmaceutical production [3] , [4] , [5] , chemical manufacturing [6] , [7] and advanced material preparation [8] , [9] , [10] , where the controlled crystallization is highly desired. Refined crystal grains have many outstanding advantages in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound induced grain refinement of crystallization in evaporative saline droplets

Zhang,

Chen,

Wang

et al. 2024

Ultrasonics Sonochemistry

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Effects of Chemical and Geometric Microstructures on the Crystallization of Surface Droplets during Solvent Exchange

Cited by 10 publications

References 39 publications

Surface Microlenses for Much More Efficient Photodegradation in Water Treatment

Surface Microlenses for Much More Efficient Photodegradation in Water Treatment

Surface microlenses for much more efficient photodegradation in water treatment

Ultrasound induced grain refinement of crystallization in evaporative saline droplets

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