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Topic Review
Mineral-Supported Photocatalysts
Although they are of significant importance for environmental applications, the industrialization of photocatalytic techniques still faces many difficulties, and the most urgent concern is cost control. Natural minerals possess abundant chemical inertia and cost-efficiency, which is suitable for hybridizing with various effective photocatalysts. The use of natural minerals in photocatalytic systems can not only significantly decrease the pure photocatalyst dosage but can also produce a favorable synergistic effect between photocatalyst and mineral substrate. Owing to their unique structures, large surface area, and negatively charged surface, silicate minerals could enhance the adsorption capacity, reduce particle aggregation, and promote photogenerated electron-hole pair separation for hybrid photocatalysts. Moreover, controlling the morphology and structure properties of these materials could have a great influence on their light-harvesting ability and photocatalytic activity. Composed of silica and alumina or magnesia, some silicate minerals possess unique orderly organized porous or layered structures, which are proper templates to modify the photocatalyst framework. The non-silicate minerals (referred to carbonate and carbon-based minerals, sulfate, and sulfide minerals and other special minerals) can function not only as catalyst supports but also as photocatalysts after special modification due to their unique chemical formula and impurities. The dye-sensitized minerals, as another natural mineral application in photocatalysis, are proved to be superior photocatalysts for hydrogen evolution and wastewater treatment. 
  • 351
  • 16 Aug 2022
Topic Review
Green Conversion of Carbon Dioxide
Carbon capture and use may provide motivation for the global problem of mitigating global warming from substantial industrial emitters. Captured CO2 may be transformed into a range of products such as methanol as renewable energy sources. Polymers, cement, and heterogeneous catalysts for varying chemical synthesis are examples of commercial goods. Because some of these components may be converted into power, CO2 is a feedstock and excellent energy transporter. By employing collected CO2 from the atmosphere as the primary hydrocarbon source, a carbon-neutral fuel may be created. The fuel is subsequently burned, and CO2 is released into the atmosphere like a byproduct of the combustion process.
  • 351
  • 10 Apr 2023
Topic Review
Frameworks and Practices for Smart City Assessment
Frameworks and practices for smart city assessment belong to five main categories: best practices, ranking frameworks, index-based frameworks, initiative-based evaluation, and maturity models.
  • 351
  • 29 Aug 2023
Topic Review
Adsorption of PAHs and PCDD/Fs in Microplastics
Plastics are synthetic organic polymers that are malleable and can be molded into solid objects of various kinds. Furthermore, they are strong, light, durable and inexpensive, properties that make them suitable for the manufacture of a wide range of products. Polyaromatic hydrocarbons (PAHs), dioxins, and furans (PCDD/Fs), these compounds have also been detected in products made from plastics and in recycled plastics by different procedures.
  • 350
  • 27 Jul 2022
Topic Review
Konti–Skan
Konti–Skan (also known as Kontiskan) is the name of high-voltage direct-current transmission line between Denmark and Sweden.
  • 350
  • 21 Nov 2022
Topic Review
Bioremediation of Petroleum Pollutants
The contamination of the soil, agricultural lands, and water bodies with petroleum wastes and other hydrocarbon pollutants has become a serious environmental concern as perceived by the impacts on the aquatic and marine ecosystem. Various investigations have provided novel insights into the significant roles of microbial activities in the cleanup of hydrocarbon contaminants. 
  • 350
  • 23 Apr 2023
Topic Review
Organophosphate Esters in Aquatic Environment
Organophosphate esters (OPEs) are increasingly used as flame retardants and plasticizers in various products. Most of them are physically mixed rather than chemical bonded to the polymeric products, leading to OPEs being readily released into the surrounding environment. Due to their relatively high solubility and mobility, OPEs are ubiquitous in the aquatic environment and may pose potential hazards to human health and aquatic organisms. 
  • 350
  • 16 May 2023
Topic Review
Visualization of Cultural Heritage Objects
Cultural heritage includes everything we have inherited from previous generations. It is a valuable asset that links the past to the present. For many countries, it is both part of the national identity and an important economic engine. However, cultural heritage is constantly threatened by natural and anthropogenic factors. Therefore, the documentation of cultural heritage is very important. Registering all elements of cultural heritage has many advantages when it comes to understanding its intrinsic value, assessing its significance, and preserving and managing it.
  • 350
  • 18 Jul 2023
Topic Review
Neighborhood Services and Property Values in Urban Area
Neighborhood services, property attributes, and their associated amenities have positive impacts on land and property values. This impact is estimated by the hedonic pricing model, which is considered an effective method used in previous studies for such evaluations.
  • 350
  • 23 Oct 2023
Topic Review Video
Arsenic Contamination of Groundwater
At a great many locations worldwide, the safety of drinking water is endangered by pollution with arsenic. Arsenic toxicity is a matter of both systems chemistry and systems biology: it is determined by complex and intertwined networks of chemical reactions in the inanimate environment, in microbes in that environment, and in the human body.
  • 350
  • 31 Jan 2024
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