In this laboratory experiment, the synthesis and characterization of H5PV2Mo10O40@Cu3(BTC)2 (denoted as NENU-9, H3BTC = 1,3,5-benzenetricarboxylic acid) and its application in fuel desulfurization were performed. This experiment is designed for advanced undergraduate students majoring in chemistry. In this experiment, students experience the universal procedures of solution syntheses, get knowledge of several modern instrumental techniques (PXRD, FTIR, SEM, and GC) widely utilized in chemical research, and learn the general procedure of heterogeneous catalytic reaction. Upon the completion of the experiment, not only was students’ teamwork spirit cultivated by data-sharing and discussion in their assigned group, but also their environmental protection awareness was stimulated by performing a catalytic oxidative desulfurization reaction, a potential technology that may reach the goal of reducing sulfur oxide emissions. Moreover, students’ basic chemistry knowledge (inorganic, coordination, organic, and analytical chemistry) was consolidated by using it to analyze experimental phenomena and results.

The dominating role of colloid science in papermaking processes, as exemplified by wet-end chemistry, is now well known. The concept of colloids dates back to about 160 years ago. In certain cases, however, the term “colloids” can have an overlapping meaning with the modern terms “nanomaterials” and “supramolecular assemblies”. The latter terms, and the scientists who have gravitated to those terms, have enriched colloid science, providing new insights into colloidal systems. It is proposed here that reconsidering papermaking in light of these multi-disciplinary sciences has potential to facilitate effective teaching and learning pertaining to universities that have pulp and paper programs. Enhanced integration of basic sciences with papermaking may further our understanding and broaden existing research areas, which is likely to create breakthroughs in basic research, applied research, and product development.

This opinion piece focuses on the topic of preserving library books that are facing the problem of aging, and it delves into the importance of preserving such books and the challenges faced in doing so. The strategies adopted for preservation are discussed, and some questions are posed that need to be answered in the area of preservation of library books. This work may serve as a useful guide for librarians and others concerned with the preservation of books, providing insights into the best practices, challenges, and strategies for maintaining library books for posterity. Indeed, the preservation of library books is crucial for ensuring the continued accessibility and availability of knowledge and information for future generations.