The serious environmental pollution and energy crisis have become a global issue, which makes it a pressing task to develop sustainable and clean energy sources. There exists a large amount of renewable energy in the ocean; unfortunately, most resources are underutilized. In this work, we demonstrate a performance-enhancing rolling triboelectric nanogenerator (TENG) based on nano–micro-structured polytetrafluoroethylene (PTFE) films. The nano–micro structure on the PTFE surface can increase the effective contact area and enhance the triboelectric effect, which is beneficial to improve the output performance. As a result, the output voltage and output current are 25.1 V and 7.3 μA, respectively. We further investigate the effect of nano–micro PTFE concentration on the output performance. The TENG based on a 45% concentration of nano–micro PTFE presents the maximum output power. Furthermore, this TENG can effectively harvest water wave energy with various amplitudes and frequencies, which has the potential to harvest ocean energy for environmental monitoring.

Farmers’ protection behavior largely depends on their perceived value of cultivated land quality protection. However, existing research shows that the impact path of these perceived factors on farmers’ cultivated land protection behavior is not clear. Based on the survey data of 288 farmers in Ningbo City, this study empirically analyzed the impact of farmers’ perception on their cultivated land quality protection behavior through structural equation modeling (SEM). The results showed that farmers’ cultivated land quality protection behavior largely depended on perceived value, and they followed the logic paradigm of “perceived tradeoff→perceived value→behavioral intention→behavioral response”. Among them, farmers’ perceived value comes from farmers’ comprehensive tradeoff of benefits and risks in the process of cultivated land quality protection. In other words, improving farmers’ perceived benefits and reducing perceived risks is conducive to improving farmers’ perceived value of cultivated land quality protection. The above findings are helpful to improve farmers’ behavior of farmland land quality protection and provide new ideas and empirical basis for the design and improvement of cultivated land quality protection policies.

Various sizes and morphologies of noble metal/zinc oxide hybrid materials have promising applications in surface‐enhanced Raman scattering (SERS). Generally, organic agents used during the synthesis of metal nanoparticles will inexorably induce organic pollution on the surface of SERS substrate, resulting in a negative effect on detection sensitivity. Herein, a stable and clean 3D flower‐like ZnO/Ag hierarchical microstructure SERS substrate was designed and fabricated via a simple photocatalytic method. This synthetic strategy does not involve usage of any organic agents, which ensures the cleanness and free of impurities interferences. As anticipated, the as‐fabricated 3D flower‐like ZnO/Ag SERS substrates with high surface‐to‐volume ratio increased numerous hot spots, and exhibited excellent detection sensitivity to Rhodamine 6G. A linear relationship between the Raman intensity and the concentration of Rhodamine 6G ranging from 10 ⁻¹¹ to 10 ⁻⁴ M was realised. This work demonstrated a performance‐enhanced SERS sensor based on microflower‐like ZnO@Ag hybrids, which provides a potential method to develop highly sensitive and stable SERS sensor for organic molecules detection.

Farmers’ green production behavior is key to addressing resource and environmental constraints and advancing agricultural green transformation, with social capital critically influencing their production decisions. However, rural population mobility amid urbanization and market economy penetration have reshaped farmers’ social interactions, reconstructing and differentiating social capital into distinct types. Few studies now focus on the complex link between this transformed social capital and farmers’ green production behavior. Moreover, though the government has long used agricultural subsidies to encourage green production, how these subsidies function when different social capital types affect green production remains unclear. To address the aforementioned issues, using 2022 CLES data and a binary logit model, this study examines how embedded and disembedded social capital influence farmers’ green production behavior and the moderating role of subsidies. Results show that (1) disembedded social capital has a significantly positive impact on farmers’ green production behavior, stronger than embedded social capital; (2) subsidies only positively moderate embedded social capital’s impact. The results have rich theoretical and practical implications, which can promote farmers’ adoption of green production behavior and accelerate the green transformation of agriculture.

We performed the genetic algorithm (GA) incorporated with density functional theory (DFT) calculations to investigate the atomic and electronic properties of a series of Ti₂Si _n (n = 3 = –24) clusters. Comprehensive consideration on the formation energy, the second difference in cluster energy and the addition energy of Si to a Ti₂Si _n−1 cluster as well as the HOMO-LUMO gap, our results show that Ti₂Si₄ cluster is the most stable one in the series of clusters, followed by the Ti₂Si₁₃, Ti₂Si₂₁,Ti₂Si₁₅ and Ti₂Si₇ clusters, which can be understood by the combination of symmetry and electron shell filling rule. The silicon cage could be obviously enhanced by doping double Ti atoms making them promising nanoscale materials.

A facile and general strategy was successfully developed for the surface modification of hydrophobic Fe3O4 magnetic nanoparticles with various sizes (4–17 nm). The results show that the magnetic and hydrophobic properties are sensitive to the nanoparticle size. For example, the contact angle (CA) of the sample increases as the particle size increases. Using these surface modification techniques allowed the coating of water droplets with highly hydrophobic Fe3O4 nanoparticles to form magnetic liquid marbles through a mechanical method. The behavior of these liquid marbles under the action of a magnetic field revealed that their potential value in electronic, biomedical, self-cleaning, and biochemical applications.