Multifunctional AgCO microrods as SERS-active substrate for the detection and degradation of Rhodamine B dye.

Surface-enhanced Raman spectroscopy (SERS) is a non-destructive and ultrasensitive detection tool used for a variety of contaminants in recent years. In this paper, we synthesized a multifunctional AgCO nanocomposite for a sensitive SERS detection and photodegradation of Rhodamine B (RhB) dye. The proposed AgCO substrate was characterized using XRD, UV-vis, FESEM, EDX and TEM techniques.

Seasonal origin of the thermal maxima at the Holocene and the last interglacial.

Proxy reconstructions from marine sediment cores indicate peak temperatures in the first half of the last and current interglacial periods (the thermal maxima of the Holocene epoch, 10,000 to 6,000 years ago, and the last interglacial period, 128,000 to 123,000 years ago) that arguably exceed modern warmth. By contrast, climate models simulate monotonic warming throughout both periods. This substantial model-data discrepancy undermines confidence in both proxy reconstructions and climate models, and inhibits a mechanistic understanding of recent climate change.