Developing applications for the by-products obtained from waste processing is vital for resource recovery.The synthesis of ZnCl2-activated biochar with high electrocatalytic activity was carried out by the microwave-a...Developing applications for the by-products obtained from waste processing is vital for resource recovery.The synthesis of ZnCl2-activated biochar with high electrocatalytic activity was carried out by the microwave-assisted pyrolysis of pineapple peel and subsequent chemical activation process.Activated biochar is employed in the electrochemical sensing of nitrite by drop casting in a glassy carbon electrode(GCE).The activated biochar exhibited a stacked carbon sheet,254 m2 g−1 Brunauer,Emmett and Teller(BET)surface area,0.076 cm3 g−1 pore volume,189.53 m2 g−1 micropore area and oxygen-containing functional groups.The electrochemical impedance spectroscopy of the modified GCE showed a reduced charge transfer resistance of 61%.This is crucial to determine the electrochemical properties of biochar.The sensor showed a significant current response and an excellent limit of detection of 0.97µmol L−1.The modified-activated biochar electrochemical sensor demonstrated high selectivity,reproducibility(RSD=2.4%),and stability(RSD=2.6%).展开更多
The increasing frequency of wildfireshas posed significantchallenges to power system supply reliability and security,especially in wildfire-prone regions like Australia.A brief review of wildfiremitigation strategies ...The increasing frequency of wildfireshas posed significantchallenges to power system supply reliability and security,especially in wildfire-prone regions like Australia.A brief review of wildfiremitigation strategies in power systems is presented,including wildfirerisk identificationand infrastructure planning at the planning stage,as well as wildfireprediction and real-time operational response at the operational stage.The wildfire response strategies adopted by twelve representative Australian power companies(including both transmission and distribution network service providers)are next analyzed to highlight the progress made in the industry.Then,related challenges are identifiedand future research directions discussed.Finally,opportunities for the power industry to enhance power grid resilience and valuable insights for other sectors facing extreme events are addressed.展开更多
文摘Developing applications for the by-products obtained from waste processing is vital for resource recovery.The synthesis of ZnCl2-activated biochar with high electrocatalytic activity was carried out by the microwave-assisted pyrolysis of pineapple peel and subsequent chemical activation process.Activated biochar is employed in the electrochemical sensing of nitrite by drop casting in a glassy carbon electrode(GCE).The activated biochar exhibited a stacked carbon sheet,254 m2 g−1 Brunauer,Emmett and Teller(BET)surface area,0.076 cm3 g−1 pore volume,189.53 m2 g−1 micropore area and oxygen-containing functional groups.The electrochemical impedance spectroscopy of the modified GCE showed a reduced charge transfer resistance of 61%.This is crucial to determine the electrochemical properties of biochar.The sensor showed a significant current response and an excellent limit of detection of 0.97µmol L−1.The modified-activated biochar electrochemical sensor demonstrated high selectivity,reproducibility(RSD=2.4%),and stability(RSD=2.6%).
基金supported by the Advance Queensland Industry Research Projects Program(IRP103-2023).
文摘The increasing frequency of wildfireshas posed significantchallenges to power system supply reliability and security,especially in wildfire-prone regions like Australia.A brief review of wildfiremitigation strategies in power systems is presented,including wildfirerisk identificationand infrastructure planning at the planning stage,as well as wildfireprediction and real-time operational response at the operational stage.The wildfire response strategies adopted by twelve representative Australian power companies(including both transmission and distribution network service providers)are next analyzed to highlight the progress made in the industry.Then,related challenges are identifiedand future research directions discussed.Finally,opportunities for the power industry to enhance power grid resilience and valuable insights for other sectors facing extreme events are addressed.
