TY - JOUR
T1 - Hollow Co3O4 nanospheres modified with RuCl3 as peroxidase mimics for sensitive determination of sulfide ions at neutral pH
AU - Chen, Daqing
AU - Li, Minghui
AU - Wang, Wanzhu
AU - Ge, Danhua
AU - Chen, Xiaojun
N1 - Publisher Copyright:
© 2024 The Royal Society of Chemistry.
PY - 2024/9/5
Y1 - 2024/9/5
N2 - Developing high-performance nanozymes at neutral pH is extremely necessary for the application of biological and water environmental systems. RuCl3-modified hollow Co3O4 nanospheres (Ru3+-Co3O4 HNSs) were utilized to establish a colorimetric sensor for selective determination of sulfide ions (S2−). The hollow Co3O4 nanospheres after doping of Ru3+ provide a large surface area and more active sites, thereby boosting the electron transport and the affinity to the substrates. Specifically, the as-prepared Ru3+-Co3O4 HNSs exhibited remarkable peroxidase-like (POD-like) activity, which can catalyze colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxTMB under neutral pH conditions. Furthermore, the Ru3+-Co3O4-based colorimetric sensor achieved a wide linear range (0.5-20 μM) and a low detection limit (0.051 μM) for S2− ion concentration, as well as good selectivity, reproducibility and practicability in sewage water. This research aims to boost the accuracy of S2− detection and shed light on application prospects in the water environmental fields.
AB - Developing high-performance nanozymes at neutral pH is extremely necessary for the application of biological and water environmental systems. RuCl3-modified hollow Co3O4 nanospheres (Ru3+-Co3O4 HNSs) were utilized to establish a colorimetric sensor for selective determination of sulfide ions (S2−). The hollow Co3O4 nanospheres after doping of Ru3+ provide a large surface area and more active sites, thereby boosting the electron transport and the affinity to the substrates. Specifically, the as-prepared Ru3+-Co3O4 HNSs exhibited remarkable peroxidase-like (POD-like) activity, which can catalyze colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue oxTMB under neutral pH conditions. Furthermore, the Ru3+-Co3O4-based colorimetric sensor achieved a wide linear range (0.5-20 μM) and a low detection limit (0.051 μM) for S2− ion concentration, as well as good selectivity, reproducibility and practicability in sewage water. This research aims to boost the accuracy of S2− detection and shed light on application prospects in the water environmental fields.
UR - http://www.scopus.com/inward/record.url?scp=85204200502&partnerID=8YFLogxK
U2 - 10.1039/d4en00569d
DO - 10.1039/d4en00569d
M3 - 文章
AN - SCOPUS:85204200502
SN - 2051-8153
VL - 11
SP - 4779
EP - 4787
JO - Environmental Science: Nano
JF - Environmental Science: Nano
IS - 12
ER -