With the advances in material science, hybrid nanomaterials with unique mechanical, electrical, thermal and optical characteristics have been developed. Among them, hybrids based on filamentous forms of carbon, such as carbon nanotubes and carbon nanofibers, in combination with inorganic nanoparticles attract particular attention. Due to the structure and morphology, charge and energy transfer processes lead to synergistic effects that allow the use of less material with higher productivity. To clarify these issues, this review will summarize and discuss the relevant studies of the use of inorganic compounds of various chemical groups in modifying carbon nanomaterials for ecological applications.

Food, chemicals, agricultural products, drugs, and vaccines should be transported and stored within an appropriate low-temperature range, following cold chain logistics. Violations of the required temperature regime are generally reported by time−temperature indicators; however, current sensors do not cover a sufficiently broad lowtemperature range and may lack thermal and photostability. Here, we report a nanostructured solvatochromic temperature indicator formed from cellulose nanocrystals decorated with carbon dots (C-dots). The indicator utilizes a strong nonlinear dependence of photoluminescence of C-dots on the composition of water/dimethyl sulfoxide (DMSO) solvent and a composition-dependent variation of the melting temperature of the water/DMSO mixture. Exceeding the temperature of the frozen mixed solvent above a designated threshold value results in solvent melting, flow, and impregnation of the nanostructured film, thus causing an irreversible change in the intensity and wavelength of photoluminescence emission of the film, which is reported both qualitatively and quantitatively. The indicator covers a temperature range from −68 to +19 °C and is cost-efficient, portable and photo-and thermostable.

Конверсия тяжелых углеводородов, в частности полиароматических, является одной из основных задач в нефтяной, угольной и биотопливной промышленности. Полиароматические углеводороды являются перспективным сырьем для получения веществ группы БТК (бензолтолуол-ксилол). Конверсия полиароматических соединений может осуществляться путем гидрирования или гидрокрекинга. Оба этих процесса характеризуются высоким расходом водорода. Для снижения или минимизации потребления водорода при гидроконверсии перспективно использование сверхкритических растворителей, которые способны быть донорами водорода. В данной работе проведено исследование процесса каталитического гидрокрекинга антрацена, а также подбор оптимальных условий, с целью получения о-ксилола с высоким выходом. The conversion of heavy hydrocarbons, in particular polyaromatic hydrocarbons, is one of the main tasks in the oil, coal and biofuel industries. Polyaromatic hydrocarbons are promising raw materials for the production of BTX group (benzene-toluene-xylene) compounds. The conversion of polyaromatic compounds can be carried out by hydrogenation or hydrocracking. Both of these processes are characterized by high hydrogen consumption. Supercritical fluids being the hydrogen donors can be successfully used to reduce or minimize hydrogen consumption during hydroconversion. In this paper, the study of the process of catalytic hydrocracking of anthracene, as well as the choice of optimal conditions, in order to obtain o-xylene with a high yield were carried out.