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Molybdenum disulfide (MoS2) has emerged as an attractive non‐noble‐metal electrocatalyst for hydrogen evolution reaction (HER), but its performance is limited by scarce active sites and poor conductivity. Herein, we construct a hetero‐structure of nitrogen‐doped MoS2 ultrathin nanosheets anchored on nitrogen‐doped multi‐walled carbon nanotubes (N−MoS2/N−CNTs) using urea as N‐doping reagent. It is demonstrated that the N species can expand the interlayer spacing of MoS2 and in‐situ substitute the S atoms in MoS2 lattices to create more structural defects, enabling highly exposed basal plane/edge sites. Simultaneously, N species in CNTs favor the interface coupling between N−MoS2 and N−CNTs, which can maintain structural stability and accelerate electron/proton reaction kinetics. Consequently, N−MoS2/N−CNTs exhibits the in‐depth enhancement of HER activity with a low onset potential (77 mV), small Tafel slope (40.5 mV dec−1) and excellent cycling stability. Furthermore, the essential relationship between the N‐doping concentration and HER activity of N−MoS2/N−CNTs was demonstrated.

A slow-release fertilizer is important to improve soil conditions and enhances food security through continuous plant supply. With urea as a nitrogen source, kaolin as a carrier, acrylic acid as a reaction monomer, potassium persulfate as an initiator, N, N '- methylene bisacrylamide as a crosslinking agent, under the action of cyclohexane and sorbitan monostearate, kaolin based slow-release fertilizer was synthesized by reverse suspension method for the first time. The optimum conditions for the synthesized polymer were 0.6 g kaolin, 2 g urea and 80 ℃ temperature. The maximum water absorption capacity of the slow-release fertilizer was as high as 219.75 g/g. The water retention performance lasted for at least 10 days, and the slow-release property lasted for at least 28 days. The release of nitrogen content was slow and stable. The FTIR analysis indicated that the cross-linking occurred between kaolin, urea, and resin meanwhile, the SEM analysis supported that the product had a special network structure with a rough and porous surface. TGA analysis confirmed the stability of the kaolin-based slow-release fertilizer. The findings fully validated that the synthesis method of slow-release fertilizer was feasible and has the potential to be a popular commercialized product be popularized in areas lacking water or fertilizer.

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