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[Display omitted] • A cellulosic cooling metafabric is reported via multiple scattering mechanism. • The metafabric exhibits high solar reflectivity and daytime cooling efficiency. • A superdurable cellulosic radiative cooling – power generation device can be achieved. Incorporating zero-energy-input cooling-power generation technology into personal thermal management (PTM) systems is a promising solution for thermal energy utilization but remains a huge challenge due to lacking of effective assembly technology. In this work, a sustainable, cost-effective, superdurable, and nanostructured cellulosic metafabric (CWF) is reported that exhibits well radiative cooling function to achieve high-performance power generation. Through tailoring the viscoelasticity and optical performance in the electrospinning process, this metafabric demonstrates a unique micro/nano structure and anchored MOF assembly, 95.7 % solar reflectivity, 0.94 infrared emissivity, high mechanical strength, washability, surface hydrophobicity, and UV resistance can be achieved. This metafabric exhibited high cooling efficiency of 5.7 °C during direct sunlight in summer and anti-washing and UV stability. Furtherly, we coupled the CWF (as the cold sink) with a commercial thermoelectric device to assemble a power generation device. The device can output average voltage of 200 mV with an average temperature gradient of ≈20.1 °C under stimulated sunlight and shows superdurable power generation performance even after washing or folding (7000 cycles) use. An outdoor test demonstrated it can deliver a high output voltage of 519 mV in Nanjing, China. The cooling metafabirc shows great promise for practical applications in wearable power generation devices. [ABSTRACT FROM AUTHOR]

Direct in-situ measurements of aerosol mixing state, optical properties, and chemical composition were performed in summertime of 2014 at Nanjing, China. Aerosols were predominantly internally mixed, with an average effective density of 1.30–1.63 g cm−3 for 50–230 nm particles, increasing with size. Externally mixed, relatively fresh black carbon (BC) was only episodically observed, with a second mode peaking at 0.51–0.91 g cm−3. For particles of 110, 140, 185 and 230 nm, BC accounted for 1.7 ± 1.2%, 4.8 ± 3.0%, 5.3 ± 3.3%, and 5.1 ± 3.3% of the particle mass, while being present in 26.4 ± 5.3%, 58.1 ± 27.7%, 59.8 ± 25.4%, and 62.4 ± 27.9% of the particle number concentration, indicating that BC was heavily coated and may contribute significantly to atmospheric aerosol population. Substantial BC absorption enhancement was observed with E abs of 1.41 ± 0.39, 1.42 ± 0.40 and 1.35 ± 0.38 at 405, 532 and 781 nm, respectively. High volatile aerosol components, in particular nitrate, were found to play vital roles in BC's absorption enhancement. High E abs values were associated with elevated NO x and RH. A clear diurnal pattern was observed for E abs supporting a significant impact from traffic emissions, which stood in contrast with previous studies reporting very thin coating and negligible absorption enhancement for traffic emitted BC. High concentrations of NO x co-emitted with BC from traffic sources and its conversion to particulate nitrate likely contributed to the aging and increased absorption of BC particles, which was even enhanced under high RH above the deliquescence point of ammonium nitrate. Therefore, our results indicated that the mitigation of NO x emissions from traffic was critical for reducing the positive radiative forcing induced by BC, especially under high RH conditions. Image 1 • Mixing state, optical properties, and composition of BC were measured in Nanjing. • E abs (BC) of 1.41 ± 0.39, 1.42 ± 0.40 and 1.35 ± 0.38 at 405, 532 and 781 nm were observed. • NO x co-emitted with BC from traffics may lead to the BC aging and observed E abs (BC). [ABSTRACT FROM AUTHOR]