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Anisotropic and heterogeneous solids, comprising a minimum of two or more elements with different properties, appear pervasively in rock materials including the pore structure and mineral composition of quartz and granite and usually have extensive applications in construction aggregates, dimension stone, geotechnical engineering, and petrology/geology. The elastic stress fields of inhomogeneous materials or composites inevitably change due to the presence of heterogeneous microstructure under applied external conditions, and hence the total mechanical and physical properties are affected by the temperature and pore pressure fluctuations beneath the surface. In this paper, the thermoporoelastic (TPE) approach on the basis of eigenstrain concept is introduced to predict the stress fields in fluid-saturated porous geologic materials like hydrocarbon reservoirs or aquifers by accounting for the coupling between thermal, poroelastic, and mechanical effects. It is an extension of the micromechanical theory that also incorporates thermal effects like pore pressure changes and temperature alternations. In addition, the TPE approach provides an important multiphysical modeling tool for understanding subsurface fluid-rock interactions and stress states in applications like unconventional oil/gas and geothermal energy. [ABSTRACT FROM AUTHOR]

Porous polymers with permanent porous structures, considerable reactive sites, high specific surface areas as well as good stability have been one of research hotspots in the field of porous materials. However, the reported porous materials containing fullerene are very limited. Herein, porous fullerene-bearing polycarbazole FulCPOP with permanent porosity was synthesized from carbazole-bearing fullerene derivative via carbazole-based oxidative coupling polymerization. Considering that fullerene possesses high chemical reactivity to complex with transition metals in η 2-fashion, post-polymerization functionalization of FulCPOP by coordination with palladium and rhodium complexes made porous fullerene-bearing polymer to form metal complex hybrid composites FulCPOP-Pd and FulCPOP-Rh , respectively. Their gas (H 2 , CO 2 , CH 4) uptake capacities and catalytic performance as heterogeneous hydrogenation catalysts were explored. FulCPOP-Rh not only exhibited a better catalytic activity with a higher conversion (64–77%) than FulCPOP-Pd (29–38%), but also had a higher selectivity. Moreover, compared with catalytic activities of fullerene metal complex molecules, porous hybrid composite FulCPOP-Rh showed a better catalytic performance in a shorter reaction time and a lower H 2 pressure. Fullerene-bearing porous polymers and their metal complex hybrid composites may allow for gas uptake, hydrogenation and other applications. Image 1 • Porous fullerene-bearing polycarbazole with permanent porosity was synthesized. • Coordination with palladium and rhodium complexes made porous fullerene-bearing polymer supported metal complex hybrid composites. • The gas (H 2 , CO 2 , CH 4) uptake capacities and catalytic performance were explored. • These composites showed better catalytic performance in a shorter reaction time and a lower H 2 pressure. [ABSTRACT FROM AUTHOR]

Metal-organic frameworks (MOFs) are promising for photocatalysis owing to their excellent structure and performance. Unfortunately, poor stability in both aqueous solutions and high temperatures and lack of adsorption centers during reactions limit their practical applications. Herein, a bimetallic MOF anchored corncob calcined derived activated carbon (CCAC) was successfully prepared by a one-step solvothermal method. Benefiting from unique structures and synergetic effect, the porous carbon provided a high specific surface area for stable MOF support and served as an organic pollutant buffer-reservoir, which was advantageous for efficient photocatalytic degradation of organic pollutants. The optimized MOF/CCAC-5 samples possessed excellent visible light degradation rate, i.e., 100% for Rh B, more than 96% for six mixed dyes, and 98% for tetracycline. This prominent photocatalytic activity was caused by active species, including photoelectrons (e−), photo-holes (h+) and superoxide free radicals (•O2−). The transient photocurrent response and electrochemical impedance tests showed that MOF/CCAC-5 exhibited a relatively high charge separation and low carrier recombination rate. Cyclic and simulation experiments indicated high reusability, stability and universality of the composite photocatalysts. These exciting results provide new pathways for the fabrication of MOFs anchored porous carbon materials. Image 1 • Corncob-derived porous carbon (CCAC) served stable MOF support. • CCAC simultaneously served as an organic pollutant buffer-reservoir. • MOF/CCAC showed high efficient photodegradation of multiple pollutants. • Optimized MOF/CCAC showed higher charge separation and lower carrier recombination rates. [ABSTRACT FROM AUTHOR]

• ZnIn-layered double hydroxides (ZnIn-LDHs) were synthesized by microwave hydrothermal method. • ZnO/In 2 O 3 layered double oxides (ZnIn-LDOs) Photocatalyst was prepared by calcination. • ZnIn-LDOs showed a superior photocatalytic activity in degrading methylene blue. The ZnIn-layered double hydroxides (ZnIn-LDHs) were synthesized by microwave hydrothermal method and used as the precursors to prepare the ZnIn-layered double oxides (ZnIn-LDOs) by the controllable calcination. The ZnIn-LDOs were aggregated by porous sheet materials, and the particle size was about 50 nm. The photocatalytic studies showed that the optimum molar ratio of Zn2+/ In3+ was 3:1 and the optimum calcination temperature was 600 °C. The photocatalytic degradation of MB by the as-prepared ZnIn-LDOs photocatalysts reached an efficiency of 98 % after irradiation under the simulated sunlight for 120 min. Radial trapping experimental results indicated that the main reactive specie for MB removal in the degradation processes was h+. [ABSTRACT FROM AUTHOR]