Here, we report a novel and simple approach to fabricate crater-like superhydrophobic leaf mesh for oil−water separation. Nanocomposite of SiO 2 and polystyrene (SiO 2 −PS) deposited on a naturally dried Tectona grandis leaf mesh showed excellent superhydrophobic and superoleophilic properties. The obtained multifunctional leaf mesh exhibited fast separation of various oils like petrol, kerosene, diesel, coconut oil from oil−water mixtures with separation efficiency greater than 95%, which lasts for more than 18 separation cycles. The prepared material can be used efficiently for the oil−water mixture separation for any oil with absolute viscosity of less than 55 cP.

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Interest in space exploration has seen substantial growth following recent launch and operation of modern space technologies. In particular, the possibility of travel beyond low earth orbit is seeing sustained support. However, future deep space travel requires addressing health concerns for crews under continuous, longer‐term exposure to adverse environmental conditions. Among these challenges, radiation‐induced health issues are a major concern. Their potential to induce chronic illness is further potentiated by the microgravity environment. While investigations into the physiological effects of space radiation are still under investigation, studies on model ionizing radiation conditions, in earth and micro‐gravity conditions, can provide needed insight into relevant processes. Substantial formation of high, sustained reactive oxygen species (ROS) evolution during radiation exposure is a clear threat to physiological health of space travelers, producing indirect damage to various cell structures and requiring therapeutic address. Radioprotection toward the skeletal system components is essential to astronaut health, due to the high radio‐absorption cross‐section of bone mineral and local hematopoiesis. Nanotechnology can potentially function as radioprotectant and radiomitigating agents toward ROS and direct radiation damage. Nanoparticle compositions such as gold, silver, platinum, carbon‐based materials, silica, transition metal dichalcogenides, and ceria have all shown potential as viable radioprotectants to mitigate space radiation effects with nanoceria further showing the ability to protect genetic material from oxidative damage in several studies. As research into space radiation‐induced health problems develops, this review intends to provide insights into the nanomaterial design to ameliorate pathological effects from ionizing radiation exposure.This article is categorized under: Therapeutic Approaches and Drug Discovery > Emerging Technologies Nanotechnology Approaches to Biology > Nanoscale Systems in Biology Nanotechnology Approaches to Biology > Cells at the Nanoscale Therapeutic Approaches and Drug Discovery > Nanomedicine for Oncologic Disease

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Thin film of cadmium sulphide (CdS) consisting cabbage like morphology was chemically synthesized at room temperature from an aqueous alkaline bath onto soda lime glass and fluorine-doped tin oxide (FTO)-coated glass substrates. The synthesized cabbages of CdS were characterized using X-ray diffraction (XRD), UV-vis spectroscopy and scanning electron microscopy (SEM). The XRD pattern revealed the formation of CdS particles with a cubic crystal structure. SEM micrographs show that the cabbage like morphology is composed of nanopetals. Further, the photoelectochemical (PEC) performance was tested in Na 2 S-NaOH-S electrolyte which has maximum short circuit current of (Isc) 359μA/cm 2 .