Correction: Magnetically recoverable magnetite-reduced graphene oxide as a demulsifier for surfactant stabilized crude oil-in-water emulsion

• Xin Hui Yau, 
• Cheng Seong Khe, 
• Mohamed Shuaib Mohamed Saheed, 
• Chin Wei Lai, 
• Kok Yeow You, 
• Wai Kian Tan