A Bibliometric Review Study on Reading Literacy over Fourteen Years

Reading literacy has been considered one of the essential vital competencies in modern society and has thus gained increasing attention in research. With both qualitative and quantitative research methods, this study aimed to investigate the overall picture in this research field and investigate the role of reading motivation and online reading activities and how online reading literacy was assessed. The top ten organizations, countries with the highest publications, author keywords, all keywords, cited references, cited sources, and cited authors were visualized via VOSviewer clustering and counting techniques. Reading motivation, online reading activities, and digital reading literacy assessment tests were also explored through the visualization citation network in CitNetExplorer. In conjunction with the citation network, 13 peer-reviewed articles were selected for further analysis based on the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocol (PRISMA-P). The results show that reading motivation played an essential role in reading literacy achievement in formal schooling, while online reading activities could both positively and negatively affect digital reading literacy due to their multifaceted nature. The digital reading literacy assessment tests vary across the world. Implications for widely investigating adults and L2 reading literacy and relevant support or interventional measures to boost reading literacy were also discussed

Characterization of the complete chloroplast genome of Juniperus recurva (Cupressaceae), the Dropping Juniper from the Himalaya

The complete chloroplast genome of the Drooping Juniper, Juniperus recurva, was characterized. The cp genome was 127,602 bp in length, which contained 119 genes, including 82 protein-coding genes, 33 tRNA, and four ribosomal RNA genes. Eight genes (atpF, ndhA, ndhB, rpoC1, petD, petB, rpl16, and rpl2) had a single intron, whereas two genes (rps12 and ycf3) contained two introns. The GC content of this circle genome is 35.0%. Phylogenomic analysis based on 78 common protein sequences strongly supported the close relationship between J. recurva and J. tibetica

In Situ Encapsulation of Graphene Quantum Dots in Highly Stable Porphyrin Metal-Organic Frameworks for Efficient Photocatalytic CO₂ Reduction

Photocatalytic CO2 reduction to valuable hydrocarbon solar fuel is of great significance but still challenging. Strong CO2 enrichment ability and easily adjustable structures make metal-organic frameworks (MOFs) potential photocatalysts for CO2 conversion. Even though pure MOFs have the potential for photoreduction of CO2, the efficiency is still quite low due to rapid photogenerated electron–hole recombination and other drawbacks. In this work, graphene quantum dots (GQDs) were in situ encapsulated into highly stable MOFs via a solvothermal method for this challenging task. The GQDs@PCN-222 with encapsulated GQDs showed similar Powder X-ray Diffraction (PXRD) patterns to PCN-222, indicating the retained structure. The porous structure was also retained with a Brunauer–Emmett–Teller (BET) surface area of 2066 m2/g. After incorporation of GQDs, the shape of GQDs@PCN-222 particles remained, as revealed by the scanning electron microscope (SEM). As most of the GQDs were covered by thick PCN-222, it was hard to observe those GQDs using a transmission electron microscope (TEM) and a high-resolution transmission electron microscope (HRTEM) directly, the treatment of digested GQDs@PCN-222 particles by immersion in a 1 mM aqueous KOH solution can make the incorporated GQDs visible in TEM and HRTEM. The linker, deep purple porphyrins, make MOFs a highly visible light harvester up to 800 nm. The introduction of GQDs inside PCN-222 can effectively promote the spatial separation of the photogenerated electron–hole pairs during the photocatalytic process, which was proved by the transient photocurrent plot and photoluminescence emission spectra. Compared with pure PCN-222, the obtained GQDs@PCN-222 displayed dramatically enhanced CO production derived from CO2 photoreduction with 147.8 μmol/g/h in a 10 h period under visible light irradiation with triethanolamine (TEOA) as a sacrificial agent. This study demonstrated that the combination of GQDs and high light absorption MOFs provides a new platform for photocatalytic CO2 reduction

Recovery mechanisms in aged kesterite solar cells

For successful long-term deployment and operation of kesterites Cu2ZnSn(SxSe1−x)4 (CZTSSe) as light absorber materials for photovoltaics, device stability and recovery in kesterite solar cells are investigated. A low temperature heat treatment is applied to overcome the poor charge extraction that developed in the natural aging process. It is suggested that defect states at aged CZTSSe/CdS heterojunctions were reduced while apparent doping density in the CZTSSe absorber increased due to Cd/Zn inter-diffusion at the heterojunction during the annealing process. In situ annealing experiments in a transmission electron microscope were used to investigate the elemental diffusion at the CZTSSe/CdS heterojunction. This study reveals the critical role of heat treatment to enhance the absorber/Mo back contact, improve the quality of the absorber/buffer heterojunction and recover the device performance in aged kesterite thin film solar cells