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Dr Ng Yunhua of the School of Energy and Environment, City University of Hong Kong was cordially invited by the CA Division to present the captioned technical webinar on 9 February 2022 from 6:30 pm. More than 400 participants attended.
Ir Louis Yiu was the facilitator and Ir Prof Louis Lock, CA Division Past Chairman & CAI Discipline Advisory Panel (CAI DAP) Chairman delivered the ‘Vote of Thanks’ to the speaker and the participants on behalf of the Division.
Dr Ng opened by saying that hydrogen technology was one of the potential solutions to achieving carbon neutrality in Hong Kong. He explained that sunlight was used to convert water into hydrogen and oxygen so that hydrogen could be available for use as a renewable energy carrier.
Dr Ng emphasised that his focus of research was to improve the semiconductor which was used for photoelectrocatalysis to enhance the conversion efficiency. When using hydrogen to generate electricity, the only by-product was water.
Therefore, no pollution was caused during the electricity generation, and it could also help solve the energy crisis. He briefly explained how hydrogen technology worked. He described that Bismuth Vanadate (BiVO4), the semiconductor was made in the laboratory. Whenever he and his research team members suspended BiVO4 in water in the reactor and turned it on or put it under sunlight, oxygen would exit the other side and be ready for collection for further application. Dr Ng indicated when the technology was ready for commercialisation, it was likely to be used for fuel cells, laptops, smart phones, or even for the fuel-cell electric vehicles.
Ir Yiu kicked off the question-and-answer session and Dr Ng responded to the questions.
The captioned summit was held online on 26 February 2022. As usual, it provided a platform for related academics, professionals, government officials and industrialists to present advances in areas such as Artificial Intelligence (AI), the Internet of Things (IoT), 5th Generation Network, Blockchain and Robotics and share their know-how of the latest technologies.
Over 200 participants attended the event. Distinguished officiating guests included Ir Alfred Sit, JP, Secretary for Innovation and Technology, Ir Eric Pang, JP, Director of the Electrical and Mechanical Services Department, Ir Dr The Hon W K Lo, GBS, MH, JP, Legislative Council Member (Functional Constituency – Engineering), Ir Prof The Hon Sun Dong, Legislative Council Member (Constituency – Election Committee) and CA Division Chairman, and Ir Dr Barry Lee, Vice President of the Institution.
Ir Prof Eddie Lock, the Organising Committee Chairman, opened the Summit with a welcoming address and Ir Prof Sun delivered an opening address.
Ir Sit and Ir Dr The Hon Lo shared their ideas on the use of digital technology like AI, IoT and big data in different sectors and the contributions of technology to healthcare and the development of the smart city. Ir Sit mentioned that the Government had launched the Next Generation Government Cloud and Big Data Analytics Platform in September 2020 to accelerate the electronic services and support more projects utilising big data analytics.
He also emphasised that Hong Kong’s world ranking for digital competitiveness had been going up and this would result in more employment opportunities. Ir Dr The Hon Lo highlighted the importance of digital transformation duringthe pandemic era, and briefly illustrated some examples of digital automation, such as automated warehouses and digital healthcare.
Ir Pang briefly described the automatic toilet bowl cleaning system. The system could be used for improving the hygiene condition of public toilets and alleviating the labour shortage.
Ir Prof Lock, CA Division Past Chairman and CAI Discipline Advisory Panel (CAI DAP) Chairman expressed the ‘Vote of Thanks’ to the keynote speakers.