Electrochemical detection is an efficient method for the detection of Bisphenol A(BPA).Herein,a sensitive photo-electrochemical sensor based on two-dimensional(2 D)TiO_(2)(001)nanosheets was fabricated and then used f...Electrochemical detection is an efficient method for the detection of Bisphenol A(BPA).Herein,a sensitive photo-electrochemical sensor based on two-dimensional(2 D)TiO_(2)(001)nanosheets was fabricated and then used for BPA electrochemical detection.Upon light irradiation,the 2 D TiO_(2)(001)nanosheets electrode provided a lower detection limit of BPA detection compared with an ambient electrochemical determination.The low detection limit is^5.37 nmol/L(S/N=3).Furthermore,profiting from the photoelectric characteristics,the 2 D TiO_(2)(001)nanosheets electrode exhibits a nice regeneration prope rty.After 45 min of light irradiation,the electrochemical signal was regenerated from14.7%to 82.9%of the original signal at the 6th cycle.This is attributed to the non-selective·OH mediation produced by the 2 D TiO_(2)(001)nanosheets mineralizing anodic polymeric products and resuming surface reactive sites.This investigation indicates that photo-assistance is an efficient method to improve the electrochemical sensor for detecting BPA in water environments.展开更多
Air batteries are promising energy storage technologies that have gained continuous attraction due to their high energy densities.At present,investigations on anodes of air batteries are usually focused on various met...Air batteries are promising energy storage technologies that have gained continuous attraction due to their high energy densities.At present,investigations on anodes of air batteries are usually focused on various metals such as Li,Zn,Al.In contrast,the semiconductor anodes like Si and Ge are less investigated.Si-air battery possesses a high theoretical energy density and Ge-air battery has a high actual power density and ideal safety.Besides anodes,air cathodes where oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)are also the key components in air batteries.To further promote the discharging performance and facilitate energy conversion/storage,semiconductor materials have been introduced in electrochemical cells like Li-O_(2) and Zn-air batteries.This review briefly summarizes semiconductor materials utilized in various air batteries,including the progress of Si-air and Ge-air batteries and recent advances in semiconductor cathodes catalysts.Finally,the remaining challenges and further perspective are discussed.展开更多
基金the Applied Basic Research Programs of Yunnan Science and Technology Department(No.2017FD085)the Program of Introducing Talents of Kunming University(Nos.YJL16003 and YJL18008)+4 种基金National Nature Science Foundation of China(No.61904073)Science Foundation of Yunnan Provincial Education Department(No.2018JS392)Projects of Science and Technology Plans of Kunming(No.20191-C-25318000002189)“Thousand Talents Program”of Yunnan Province for Young TalentsSpring City Plan-Special Program for Young Talents。
文摘Electrochemical detection is an efficient method for the detection of Bisphenol A(BPA).Herein,a sensitive photo-electrochemical sensor based on two-dimensional(2 D)TiO_(2)(001)nanosheets was fabricated and then used for BPA electrochemical detection.Upon light irradiation,the 2 D TiO_(2)(001)nanosheets electrode provided a lower detection limit of BPA detection compared with an ambient electrochemical determination.The low detection limit is^5.37 nmol/L(S/N=3).Furthermore,profiting from the photoelectric characteristics,the 2 D TiO_(2)(001)nanosheets electrode exhibits a nice regeneration prope rty.After 45 min of light irradiation,the electrochemical signal was regenerated from14.7%to 82.9%of the original signal at the 6th cycle.This is attributed to the non-selective·OH mediation produced by the 2 D TiO_(2)(001)nanosheets mineralizing anodic polymeric products and resuming surface reactive sites.This investigation indicates that photo-assistance is an efficient method to improve the electrochemical sensor for detecting BPA in water environments.
基金financially supported by the National Nature Science Foundation of China(Nos.61904073 and 62004085)the Projects of Science and Technology Plans of Kunming(No.2019-1-C-25318000002189)+2 种基金Applied Basic Research Programs of Yunnan Science and Technology Department(No.2019FGF02)the Spring City Plan-Special Program for Young Talents(No.ZX20210014)the Talents Introduction Project of Kunming University(Nos.YJL18008 and YJL16003).
文摘Air batteries are promising energy storage technologies that have gained continuous attraction due to their high energy densities.At present,investigations on anodes of air batteries are usually focused on various metals such as Li,Zn,Al.In contrast,the semiconductor anodes like Si and Ge are less investigated.Si-air battery possesses a high theoretical energy density and Ge-air battery has a high actual power density and ideal safety.Besides anodes,air cathodes where oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)are also the key components in air batteries.To further promote the discharging performance and facilitate energy conversion/storage,semiconductor materials have been introduced in electrochemical cells like Li-O_(2) and Zn-air batteries.This review briefly summarizes semiconductor materials utilized in various air batteries,including the progress of Si-air and Ge-air batteries and recent advances in semiconductor cathodes catalysts.Finally,the remaining challenges and further perspective are discussed.
