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The Holistic View of Cosmetic Science
Yinmao Dong,Xianrong Qiu,Hong Meng 한국피부과학연구원 2016 아시안뷰티화장품학술지 Vol.14 No.1
목적: 화장품피부과학은 독립적인 학문이면서 생명과학, 화학, 포장설계 등 20개이상 분야를 포함한 종합적인 학 문이다. 화장품피부과학은 초기 간단한 피부조직에서부터 시작하였으나 피부가 시상 하부- 뇌하수체- 부신간의 내분비조절작용을 한다고 인식됨에 따라 피부는 내분비 신호전달의 대상기관으로 인식되기 시작했다. 피부과학은 피부의 매크로 이해로부터 현재의 피부미생물과 같은 마이크로 단계의 이해로 발전되었다. 그래서 본 연구는 피부 의 전체론을 제시해서 피부문제를 해결하려 한다. 방법: 고금중외 모든 국가의 형성과 전체론의 계기로 화장품과학전체론 및 화장품학과 연관된 학과 특히 피부과학 의 발전과정을 설명하였다. 결과: 본 연구는 피부과학의 발전과정을 총 정리하고 전반적인 관점을 설립하여 각종피부문제를 해결하려 한다. 결론: 화장품과학의 전체론은 화장품과학 발전의 필연적인 추세로 될 것이라고 사료된다. Purpose: Cosmetics science has become an independent and comprehensive science with over 20 disciplines, including life science, chemistry, packaging design. In the cosmetic skin science, there were early simple skin histology, and were the understanding of the hypothalamus pituitary adrenal axis in skin, that the skin becomes the target organ of various endocrine signaling. There were early the macro understanding of the skin, and now the micro understanding of the skin, such as skin microbial community and so on. Therefore,this paper put forward a holistic view to solve skin problems. Methods: Inspired from the formation and significance of holism at all times and in all countries, we expounded the development history of cosmetic science and cosmetics related disciplines, especially dermatology. Results: This summarized the development of dermatology and established a holistic view to remove various skin problems. Conclusion: The holistic view of cosmetic science will become an inevitable trend in the development of cosmetic science.
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Synthesis of g-C3N4/CQDs composite and its photocatalytic degradation property for Rhodamine B
Jin Tao,Liu Chengbao,Chen Feng,Qian Junchao,Qiu Yongbin,Meng Xianrong,Chen Zhigang 한국탄소학회 2022 Carbon Letters Vol.32 No.6
To solve the problem of water pollution, researchers have proposed a photocatalytic degradation technology, in which the key factor is the development of efficient photocatalytic materials. Graphitic carbon nitride (g-C3N4), an n-type semiconductor, has been widely studied due to its suitable band gap (2.7 eV), low cost, easy preparation, non-toxicity, and high photostability. However, the pure-phase g-C3N4 still has defects such as low specific surface area, insufficient visible light absorption, low charge mobility, few active sites for interfacial reaction, and easy recombination of photogenerated electron–hole pairs, which leads to the lower photocatalytic activity of g-C3N4. Aiming at the problems mentioned above, this paper focus on the synthesis of g-C3N4-based composites with high photocatalytic activity via lemon juice induction method. Thiourea and lemon juice were selected as precursors, and carbon quantum dots (CQDs) as electron mediators were introduced anchoring on the surface of g-C3N4 to build g-C3N4/CQDs with compact interface. The results showed that small-sized CQDs are uniformly distributed on the surface of g-C3N4, and the g-C3N4/CQDs composite has a 2D0D structure, which reduces the recombination of photogenerated electron–hole pairs. The photocatalytic degradation efficiency of 4% g-C3N4/CQDs for RhB reaches the highest data of 90.9%, and the photocatalytic degradation rate is 0.016 min−1, which is about 2.3 times that of g-C3N4. After four cycles of photocatalytic reaction, the photocatalytic degradation efficiency of the material remained at 81.7%. Therefore, the g-C3N4/CQDs synthesized via lemon juice induction has a more stable microstructure, and the charge separation efficiency is greatly improved, which is suitable for practical photocatalytic environmental protection.
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