Preface

It is our great honor to introduce the 2nd International Workshop on Green Energy, Environment and Sustainable Development (G2ESD 2021) organized by China University of Petroleum. And it is held as one virtual conference in Weihai City because of the COVID-19 outbreak. As known to us all, environmental destruction and energy crisis are not hot topics anymore. And green development and environmental protection have become an international consensus. However, better coordinating the relationship between development and environment and achieving sustainable development is an unavoidable problem. Therefore, countries, international organizations as well as experts and scholars in the field of environment and energy each are making their effort to better solve this problem. In the meantime, relevant new ideas and technologies keep emerging. Thus, to better promote these new ideas and technologies and fully apply them to practice, G2ESD was organized and held. According to the latest data released by the United Nations, the number of people infected worldwide in the COVID-19 pandemic has surpassed 200 million, making this one of the most serious health crises in human history. Although the COVID-19 vaccine has been developed and widely vaccinated, we can never take it lightly in the fight against the epidemic. As the organizer of the G2ESD2021, it is vital to promote and spread its results, but the participants’ health and safety should be considered first. Therefore, we held the G2ESD2021 in a video presentation mode. We held this conference online instead of directly canceling or postponing it because the online meeting platform and technology so mature that participants can fully and smoothly communicate with each other. What’s more, participants can record videos that can be played back. By doing so, participants are no longer restricted by time and region and keep social distance to ensure their health and safety. And the change of conference mode did not affect the enthusiasm of participants at all. Through such a special face-to-face way, participants actively made presentations and fully communicated with each other, thus well realizing the purpose of communication. Each participant presented their academic work via video and made poster presentation over Google Drive file-sharing. If other participants have any questions, they can ask the speaker and communicate freely about any technical and application problems. Through such communication, discussions and results sharing can be realized. The conference received 55 full-text and abstract submissions from Russia, South Africa, Egypt, Indonesia, Nigeria, Sri Lanka and Mainland China. After strict peer review, a total of 30 full-text submissions were accepted and published by IOP Science. The vigorous discussions were made with fruitful results. We believe that the G2ESD2021 will bring profound academic inspiration and encouragement to the participants. Nothing can stop us from doing academic exploration. We sincerely invite scholars in the field of environment and new energy to continue to attend G2ESD2022. We want to thank the conference organizers, technical committee members for organizing the conference and review papers. At the same time, we would also like to congratulate IOP Science for facilitating the publication of proceedings and the spread of the results. Conference Organizing Committee List of Committees of G2ESD 2021 are available in this pdf.