Preparing for tomorrow with materials today

Cho, Nam‐Joon

doi:10.1016/j.mattod.2022.11.006

Cited by 8 publications

(3 citation statements)

References 15 publications

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“…This interplay results in a synergistic effect where the collective impact significantly exceeds the sum of individual efforts, akin to the cross-economy concept, which innovatively transforms waste into high-value products. 78 As the project moves forward, our focus is on harnessing this synergy to attract catalytic investment projects from international finance entities and private donors. Our objective is clear: to transform conceptual projects into tangible realities, setting off a wave of sustainable impact throughout the ASEAN region.…”

Section: Discussionmentioning

confidence: 99%

“…Each sector contributes unique strengths: research and innovation, practical solutions and technologies, policy support and regulatory frameworks, global perspectives, and funding avenues. This interplay results in a synergistic effect where the collective impact significantly exceeds the sum of individual efforts, akin to the cross-economy concept, which innovatively transforms waste into high-value products . As the project moves forward, our focus is on harnessing this synergy to attract catalytic investment projects from international finance entities and private donors.…”

Section: Discussionmentioning

confidence: 99%

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Waste Management for Environmentally Sustainable Cities: A Quadruple Helix Collaboration in Practice

Min,

Cho

2024

ACS Sustainable Resour. Manage.

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This paper discusses a sustainable waste management initiative in ASEAN nations, utilizing a unique Quadruple Helix model that includes an international organization as an active fourth actor. This collaboration among academia, government, industry, and the international organization focuses on strategic policy alignment, advanced waste management technologies, and project creation through an interactive multi-stakeholder knowledge-sharing digital platform. The project is leading to a significant reduction in carbon and methane emissions, mitigating approximately 6 million tons of CO2 equivalent and creating around 1,300 green jobs. Nearly 4 million ASEAN citizens are benefiting from improved access to solid waste management services, enhancing their quality of life and environmental health. Universities play a crucial role by establishing the ASEAN-Korean Integrated Green Technology Platform (AKIGTP), which bridges next-generation research and practical applications. NTU’s contributions in advanced research, knowledge dissemination, and fostering multi-stakeholder partnerships were instrumental in addressing complex challenges and advancing innovation within the Quadruple Helix framework. Taken together, the project not only showcases the potential of the Quadruple Helix model in driving sustainable development but also sets a precedent for similar initiatives globally. This comprehensive approach ensures effective and sustainable solutions to municipal solid waste management challenges, promoting a resilient and environmentally conscious future for the ASEAN region.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Waste Management for Environmentally Sustainable Cities: A Quadruple Helix Collaboration in Practice

Min,

Cho

2024

ACS Sustainable Resour. Manage.

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“…Altering the physical and chemical properties of pollen grains through processing results in versatile material building blocks employed in various cutting‐edge fields such as drug delivery, [ 9 ] tissue engineering, soft robotics, [ 7 ] biosensors, [ 10 ] actuators, [ 11 ] flexible electronics, [ 12 ] and environmental cleanup. [ 13 ] Inspired by the concept of cross‐economy, [ 14 ] the utilization of pollen has emerged as a remarkable example of sustainable resource transformation. [ 15 ] To achieve sustainable development goals, [ 16 ] it is necessary to explore radically new functions that challenge the inherent characteristics of natural materials.…”

Section: Introductionmentioning

confidence: 99%

Directional, Silanized Plant‐Based Sponge for Oil Collection

Kim,

Deng,

Cho

et al. 2024

Adv Funct Materials

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Porous materials are commonly employed to combat marine pollution by absorbing oil. However, the release of microplastics or nanoparticles from their synthetic components further exacerbates environmental concerns. In this study, a sustainable and reusable pollen sponge derived from eco‐friendly pollen grains and fabricated using a directional freeze‐drying method is introduced for the first time. These grains undergo a defatting process followed by a controlled hydrolysis process, transforming them into a pollen microgel made of sporopollenin, the primary constituent of a pollen grain's outer layer. The directional freeze‐drying technique is used to fabricate porous structures with controlled orientation using the pollen microgel. The application of a chemical vapor deposition with dodecyltrimethoxysilane (DDTS) grants sponge hydrophobic properties, making it ideal for selective oil absorption. This modified pollen sponge boasts superior absorption capacities (15–59 times its weight) compared to most natural sponges. Additionally, its excellent durability and ability to recover up to 65% of deformation even after 60% strain compression are remarkable with the silanization process tripling the recoverability of pollen sponges. Remarkably, the silanized directional pollen sponge (SDPS) retains this resilience after 100 compression cycles. Therefore, the SDPS emerges as an eco‐conscious solution for repeated and selective oil absorption tasks.

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Biomimetic Superhydrophobic Surfaces by Nanoarchitectonics with Natural Sunflower Pollen

Li,

Deng,

Zhou

et al. 2024

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Superhydrophobic surfaces, known for their water‐repellent, and self‐cleaning properties, are widely used in various applications. These advanced functional surfaces exhibit high contact angles (>150°), achieved through low surface energy chemistries and hierarchical roughness. Natural sunflower pollen is micron‐sized spherical particles with nano‐sized spikes on the surface. This study engineered superhydrophobic coatings using the unique hierarchical structure of sunflower pollen and low surface energy additives like polydimethylsiloxane (PDMS) and silane additives such as 1H,1H,2H,2H‐perfluorooctyltrichlorosilane (FTS), octadecyltrichlorosilane (OTS) and dichlorodimethylsilane (DCDMS). The pollen content significantly modulates surface structure, roughness, and water contact angle. Higher pollen content enhances roughness and water repellency by creating micro‐nano hierarchical structures. Pollen‐PDMS‐FTS and Pollen‐PDMS coatings demonstrated the highest water contact angles (165 ± 2° and 163 ± 3°, respectively) and lowest sliding angles (4.5 ± 1° and 7.6 ± 2.6°, respectively), achieving a “lotus effect.” Conversely, Pollen‐PDMS‐OTS or Pollen‐PDMS‐DCDMS coatings resulted in high sliding angles and water adhesion, producing a “rose petal effect.” These “lotus effect” coatings are effectively applied in self‐cleaning and water displacement in oil pipelines on hilly terrain. This study provides insights into the interplay between hierarchical structure and surface‐free energy for designing superhydrophobic surfaces tailored for specific applications.

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Preparing for tomorrow with materials today

Cited by 8 publications

References 15 publications

Waste Management for Environmentally Sustainable Cities: A Quadruple Helix Collaboration in Practice

Waste Management for Environmentally Sustainable Cities: A Quadruple Helix Collaboration in Practice

Directional, Silanized Plant‐Based Sponge for Oil Collection

Biomimetic Superhydrophobic Surfaces by Nanoarchitectonics with Natural Sunflower Pollen

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