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Zhen Zhang,Junzong Feng,Yonggang Jiang,Jian Feng 한국탄소학회 2018 Carbon Letters Vol.28 No.-
High surface carbon aerogels with hierarchical and tunable pore structure were prepared using ionic liquid as carbon precursor via a simple salt templating method. The as-prepared carbon aerogels were characterized by nitrogen sorption measurement and scanning electron microscopy. Through instant visual observation experiments, it was found that salt eutectics not only serve as solvents, porogens, and templates, but also play an important role of foaming agents in the preparation of carbon aerogels. When the pyrolyzing temperature rises from 800 to 1000°C, the higher temperature deepens the carbonization reaction further to form a nanoporous interconnected fractal structure and increase the contribution of super-micropores and small mesopores and improve the specific surface area and pore volume, while having few effects on the macropores. As the mass ratio of ionic liquid to salt eutectics drops from 55% to 15%, that is, the content of salt eutectics increases, the salt eutectics gradually aggregate from ion pairs, to clusters with minimal free energy, and finally to a continuous salt phase, leading to the formation of micropores, uniform mesopores, and macropores, respectively; these processes cause BET specific surface area initially to increase but subsequently to decrease. With the mass ratio of ionic liquids to salts at 35% and carbonization temperature at 900°C, the specific surface area of the resultant carbon aerogels reached 2309 m2 g–1. By controlling the carbonization temperature and mass ratio of the raw materials, the hierarchically porous architecture of carbon aerogels can be tuned; this advantage will promote their use in the fields of electrodes and adsorption.
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Zhen-xue Liu,Zhong-xue Gan,Jun-jie Gu,Qing-feng Song 대전대학교 환경문제연구소 2015 환경문제연구소 논문집 Vol.19 No.-
Benzene was oxidized by binary oxidants composed of nitric acid and hydrogen peroxide at 80℃. The product obtained was analyzed with gas chromatograph-mass spectrometer. Eight high value compounds, 2-nitrophenol, 2-chloro-6-nitrophenol, 4-chloro-2- nitrophenol, 2-chloro-4-nitrophenol, 2,4-dinitrophenol, 4-nitrophenol, 2,6-dinitrophenol and 2-chloro-4,6-dinitro-phenol were found, which they have high contents in the range from 4.28% to 32.52%. These compounds are very widely used in organic synthesis. e.g., synthesizing dye, medicines and chemical reagents, pesticide, explosive, polymer, etc.
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Comparison of International Competitiveness of Digital Services Trade between Korea and China
Zhen Feng,Ming-Ming Zhang 한국무역학회 2022 Journal of Korea trade Vol.26 No.3
Purpose – The purpose of this study is to analyze and compare the international competitiveness of digital service trade between Korea and China and to help enhance the competitive advantage of digital service trade between the two countries. Design/methodology – This paper designs and establishes a comprehensive evaluation system for the international competitiveness of the Korea-China digital service trade. By using the analytical methods of combining theory and demonstration through qualitative and quantitative analysis, this paper makes a concrete and complete theoretical deconstruction and empirical measurement of its international competitiveness from the two levels of overall competitiveness and departmental competitiveness. At the same time, the study also analyzes the competitive advantages and comparative disadvantages of the two countries. Findings – It is found that South Korea has a strong competitive advantage in the sector competitiveness of digital service trade, and the export structure is reasonable and balanced, but the deficit pattern affects the overall competitiveness. China has a strong competitive advantage in the overall competitiveness of the digital service trade. However, the structural imbalance in the export sector weakens the competitiveness of the sector. Both Korea and China have the space advantage and competitive potential to enhance international competitiveness in terms of development trends. Originality/value – This paper takes the lead in solving the pain point of the relative lack of similar research topics. It demonstrates the evolution process, development trends, and structural characteristics of the digital service trade. A new combination of competitive power research methods is innovated, and a comprehensive evaluation system is established. The above innovation points show the academic theoretical value and practical application value of this study.
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The Influence of the Trade Competition of China's Daily Chemical Market on the Respect of Consumers
Feng Zhen 한중경제문화학회 2018 한중경제문화연구 Vol.11 No.-
Trade and investment and consumption are the three important engine of economic growth. In 2016, the contribution rate of consumption of China's economic growth reached 64.6%, more than 33 trillion yuan, the total retail sales of social consumer goods consumption has become the first constitution of the national economic growth. This marks, China has entered the consumption boom at the same time also means that China Daily chemical market has entered a rapid growth of the golden age, daily chemical industry usher in a new round of major development machine pedantic. Under the new situation, to a strong rise of local brands from its former glory, and how in foreign trade brand market competition, how to embody fully respect on consumption subject and how to obtain competitive advantage, comprehensive this faster growth in promoting consumption and promoting the development of the globalization of domestic brands, no doubt is of great strategic significance and realistic significance.
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The Effects of Brand Experience on the Perceived Value of Customers in China and Korea
Zhen-Feng CHENG,Gyu-Bae KIM 국제융합경영학회 2021 융합경영연구 Vol.9 No.3
Purpose - This study has the purpose to investigate causal relationships among brand experience, perceived value and brand support behavior in both Chinese consumers and Korean consumers. Furthermore, this study examined the moderating effects of interaction with customers in the relationships between brand experience and perceived value. Besides, this study tried to analyze the difference between the Korean customers and the Chinese customers in the causal relationships between brand experience and perceived value. Research design, data and methodology - Three research questions about the causal relationships between variables were presented and examined empirically in this study. First research question is about relationships among brand experience, perceived value and brand support behavior. Second research questions is about the moderating role of interaction with customers. Third research question is about the differences in the causal relationships between China consumers and Korean consumers. A total of 377 samples who had visited theme parks in China and Korea were surveyed and the research questions were examined by SPSS and AMOS. Results - First, sensory experience, emotional experience, and cognitive experience have significant causal relationships with perceived value in Both Chinese and Korean consumers. Perceived value has a positive effect on brand support behavior and interaction with customer has a moderating effect between brand experience variables and perceived value in Both Chinese and Korean consumers. Second, The causal relationship between behavioral experience and perceived value is not significant in Both Chinese and Korean consumers. Third, there were significant differences in the effects of emotional experience and cognitive experience on perceived value between Chinese consumers and Korean consumers. Conclusions - First, managers of theme park industry should design experience programs considering various brand experience variables for both Chines consumers and Korean consumers. Second, it is necessary to raise the level of customer interaction between employees and customers. Third, to strengthen both emotional experience and cognitive experience is necessary for both experience marketing programs for Chinese tourists and the strategy to enter the Chinese market.
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서비스 산업의 브랜드 체험, 고객의 지각된 가치, 브랜드 지지행동의 관계
Zhen-Feng Cheng,김규배 한국유통과학회 2019 유통과학연구 Vol.17 No.2
Purpose – The importance of customer experiences has been increasing in retail industry as wells as theme park industry. The purpose of this research is to investigate relationships among brand experience, customer perceived value and brand support behavior in theme park industry. Furthermore, we tried to examine the moderating effects of interaction with customers in the relationships between brand experience and customer perceived value. Besides, we provided some implications for not only the theme park industry but also other service industries such as retail industry. Research design, data, and methodology – The research model has nine hypotheses, and we examined them empirically in this study. Five hypotheses were about relationships among theme park brand experiences, customer perceived value, and brand support behavior. The other four hypotheses were about the moderating effects of customer interactions in the causal relationship between brand experiences and customer perceived value. A total of 167 samples who had visited the theme park were surveyed and the hypotheses were tested with the statistical package programs such as SPSS 21.0 and AMOS 21.0. Results – The results of this study are as follows. First, it was proved that theme park visitors' sensory experience, emotional experience, and cognitive experience have significant positive effects on perceived value, although the hypothesis about the causal relationship between behavioral experience and perceived value is not supported. Second, the customer perceived value has a positive effect on brand support behavior. Third, customer interaction has a positive moderating effect between brand experiences and perceived value, except for behavioral experience. Conclusions - Based on the results of this study, there can be following significances and implications from both theoretical and practical perspectives. First, we confirmed the importance of experiential marketing in other service industries such as retail industry as well as the theme park industry. The marketing managers in these industries need to design various experience programs considering the various characteristics of experiences such as sensory, emotional, and cognitive experiences. Second, it will be necessary for the theme park managers to encourage active participation of customers, and raise the level of interaction between employees and customers.
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