On a High-selective Isobutyraldehyde Cataluminescence Sensor Based on Sb2SnO5/MIL-53(Al)
A nano-Sb2SnO5/MIL-53(Al)composite was prepared and used to construct a catalytic luminescence(CTL)sensor for trace isobutyraldehyde in this study and the analysis conditions of CTL were optimized simultaneously.Under the optimal conditions,the sensor exhibited a response time of 2 seconds and a recovery time of 5 seconds for isobutyraldehyde.Within the concentration range of 0.00500 mg/L-20.0 mg/L,the catalytic luminescence intensity showed a good linear relationship with the concentration of isobutyraldehyde(R2=0.99857).The detection limit was 1.5 μg/L(S/N=3)and the relative standard deviation(RSD,n=7)was 1.3％.The sensor was used to analyze the content of isobutyraldehyde in actual samples.Satisfactory recovery rate(86.0％-106％)and RSD(n=5)were obtained,ranging from4.7％-9.7％.The results showed that the developed method had good CTL selectivity and high sensitivity,suggesting potential application in trace analysis of isobutyraldehyde and environmental monitoring.
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