South China University of Technology

About: South China University of Technology is a education organization based out in Guangzhou, China. It is known for research contribution in the topics: Catalysis & Adsorption. The organization has 62343 authors who have published 69468 publications receiving 1251592 citations. The organization is also known as: SCUT & Huánán Lǐgōng Dàxué.

Constrained optimization based on hybrid evolutionary algorithm and adaptive constraint-handling technique

Abstract: A novel approach to deal with numerical and engineering constrained optimization problems, which incorporates a hybrid evolutionary algorithm and an adaptive constraint-handling technique, is presented in this paper. The hybrid evolutionary algorithm simultaneously uses simplex crossover and two mutation operators to generate the offspring population. Additionally, the adaptive constraint-handling technique consists of three main situations. In detail, at each situation, one constraint-handling mechanism is designed based on current population state. Experiments on 13 benchmark test functions and four well-known constrained design problems verify the effectiveness and efficiency of the proposed method. The experimental results show that integrating the hybrid evolutionary algorithm with the adaptive constraint-handling technique is beneficial, and the proposed method achieves competitive performance with respect to some other state-of-the-art approaches in constrained evolutionary optimization.

Cobalt nickel boride as an active electrocatalyst for water splitting

Abstract: Electrochemically splitting water to produce clean hydrogen fuel requires high-performance electrocatalysts. Here, we report that ternary transition metal boride Co–Ni–B is an active candidate catalyst for water splitting. The Co–Ni–B nanoparticles were deposited on Ni foam (NF) by a facile electroless plating method. After being properly calcined under an Ar atmosphere, the Co–Ni–B@NF catalyst exhibits a low overpotential along with high stability in alkaline solutions for the oxygen evolution reaction, which is among the best reported levels for non-precious metal catalysts. Furthermore, the properly annealed Co–Ni–B@NF catalyst also shows good activity towards the hydrogen evolution reaction. The potential of Co–Ni–B@NF as a bifunctional catalyst for the overall water splitting was demonstrated, with 10 mA cm−2 achieved at 1.72 V. The favorable combination of high catalytic activity, facile preparation and low cost makes Co–Ni–B@NF a very promising bifunctional catalyst for electrochemical water splitting.

Dynamically Vulcanized Biobased Polylactide/Natural Rubber Blend Material with Continuous Cross-Linked Rubber Phase

Abstract: We prepared a biobased material, dynamically vulcanized polylactide (PLA)/natural rubber (NR) blend in which the cross-linked NR phase owned a continuous network-like dispersion. This finding breaks the traditional concept of a sea-island morphology formed after dynamic vulcanization of the blends. The scan electron microscopy and dissolution/swell experiments provided the direct proof of the continuous cross-linked NR phase. This new biobased PLA/NR blend material with the novel structure is reported for the first time in the field of dynamic vulcanization and shows promise for development for various functional applications.